CSX


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents
us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ProductOrService

us-gaap:Revenues

us-gaap:OperatingCostsAndExpenses
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NonoperatingIncomeExpense
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:ComprehensiveIncomeNetOfTax
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NetIncomeLoss
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

us-gaap:Assets
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:Liabilities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents
us-gaap:StockholdersEquity

us-gaap:AssetsCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:ShortTermInvestments
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:AccountsReceivableNetCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:OtherAssetsCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
us-gaap:ConsolidationItems, us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization
us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization

us-gaap:OtherAssetsNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:LiabilitiesCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:AccountsPayableCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:TaxesPayableCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:OtherLiabilitiesCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:MinorityInterest
us-gaap:ConsolidatedEntities

us-gaap:OtherLiabilitiesNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents
us-gaap:StockholdersEquity

us-gaap:CommonStockValue
us-gaap:ConsolidatedEntities

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInOperatingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInInvestingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInOperatingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NetIncomeLoss
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:ProceedsFromIssuanceOfLongTermDebt
us-gaap:BalanceSheetLocation
us-gaap:ConsolidatedEntities

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:ConsolidatedEntities
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:PlanName

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:ProceedsFromSaleOfShortTermInvestments
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:RetirementPlanType
csx:DefinedBenefitPlanNetPeriodicBenefitCostBeforeGainLossDuetoSettlementsandCurtailments

csx:EquipmentandOtherRents
us-gaap:BalanceSheetLocation
csx:ReclassificationofDebtLongTermDebttoShortTermDebt
us-gaap:LossContingenciesByNatureOfContingency
csx:SelfInsuredRetention
us-gaap:Range, us-gaap:AwardType, us-gaap:PlanName
csx:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsPayoutPercentageofTarget
us-gaap:Range, us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:PlanName
us-gaap:StatementEquityComponents
csx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsExercisesinPeriodandOther
us-gaap:AwardType, us-gaap:PlanName
csx:SharebasedCompensationArrangementbySharebasedPaymentAwardPerShareWeightedAveragePriceofSharesIssued

csx:StockIssuedDuringPeriodValueStockOptionsExercisedandOther
us-gaap:StatementEquityComponents

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType

us-gaap:AmortizationOfDebtDiscountPremium
us-gaap:BalanceSheetLocation
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:DeferredIncomeTaxExpenseBenefit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:Depreciation

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:FuelCosts

us-gaap:GainLossOnSaleOfPropertyPlantEquipment
us-gaap:ConsolidatedEntities
us-gaap:IncomeLossFromSubsidiariesBeforeTax
us-gaap:ConsolidationItems

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccruedTaxesPayable

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities

us-gaap:InterestIncomeExpenseNet
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:LaborAndRelatedExpense
us-gaap:RetirementPlanType
us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
us-gaap:StatementEquityComponents

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:PaymentsForProceedsFromOtherInvestingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:PaymentsOfDividendsCommonStock
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:PaymentsToAcquireShortTermInvestments
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:PlanName
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares
us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment
us-gaap:Range
csx:CasualtyAndCatastrophicPropertyDeductible
us-gaap:Range
csx:CasualtyAndNonCatastrophicPropertyDeductible
us-gaap:ProductOrService
us-gaap:AccountsReceivableGross

us-gaap:AccountsReceivableNet
us-gaap:ProductOrService

us-gaap:AdditionalPaidInCapitalCommonStock
us-gaap:ConsolidatedEntities
us-gaap:ProductOrService
us-gaap:AllowanceForDoubtfulAccountsReceivable
us-gaap:StatementEquityComponents
us-gaap:AociTaxAttributableToParent
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:DebtAndCapitalLeaseObligations
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:DebtInstrumentFairValue

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
us-gaap:DueFromAffiliateCurrent
us-gaap:ConsolidationItems

us-gaap:DueToAffiliateCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:InvestmentType

us-gaap:LongTermDebtAndCapitalLeaseObligations
us-gaap:BalanceSheetLocation
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
us-gaap:BalanceSheetLocation
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:LossContingencyAccrualAtCarryingValue
us-gaap:LossContingenciesByNatureOfContingency

us-gaap:LossContingencyAccrualCarryingValueCurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:LossContingenciesByNatureOfContingency

us-gaap:LossContingencyAccrualCarryingValueNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:LossContingenciesByNatureOfContingency
us-gaap:Range, us-gaap:LitigationStatus
us-gaap:LossContingencyEstimateOfPossibleLoss

us-gaap:MaterialsSuppliesAndOther
us-gaap:ConsolidatedEntities

us-gaap:OperatingLeaseLiabilityNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:CommonStockValue ▁▁▁▂▂▂▃▄▄▄▅▅▅▅▆▆▆▆▇▇▇▇▇▇██████7657737827988098188448598758908949139239289379469569669759849889929951000100410091014101910221022NA1020103110401039104910501095368370NANANA393NANANA
 us-gaap:CommonStockValue us-gaap:ConsolidatedEntities srt:ParentCompany▁█765773NANANA818NANANA890NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▁▁▂▃▃▄▅▆▇█765773782798809818844858875889NANANA928NANANA965NANANA991NANANA1008NANANANANA1020NANANA1049NANANA1111NANANA1180NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 773NA792807817NA854868888NA906924929NA943952963NA982989992NA99910031008NA1018102310231023NANA104010431049NA10771109371NA11451159394NANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 772NA790805814NA850864885NA902920927NA942952962NA981988991NA99910031008NA1017102210221022NANA103810411047NA10711102369NA11341149391NANANANA
us-gaap:EarningsPerShareBasic ▂▂▂▂▂▂▂▂▂█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▁1.00.991.081.081.021.021.051.020.784.630.510.550.390.490.480.470.370.480.520.560.450.490.510.530.40.420.460.520.450.450.440.430.440.490.430.440.430.461.071.151.091.080.780.770.740.780.63
us-gaap:EarningsPerShareDiluted ▂▂▂▂▂▂▂▂▂█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▁1.00.991.081.081.021.011.051.010.784.620.510.550.390.490.480.470.370.480.520.560.450.490.510.530.40.420.460.520.450.450.440.430.440.490.430.430.430.461.061.141.081.070.780.770.730.770.62
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▅▆▆▇▆▇▇▇▆▅▅▆▆▇▄▄▄▅▆▇▇███▆▇▆▇▆▆▆▆▆▆▆▆▆▇▅▅▄▄▃▂▂▁▁28552885297830613013314331293102287628632743293328693037271027042618278129393064302731923221324430123032299930692963296328952884289430122966295129633019281028162666266324912320228921852247
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidatedEntities srt:Subsidiaries▃▃▅▇▆██▇▃▃▁▄283328642958304129933124311030832857284427252914NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService csx:AgriculturalandFoodProducts█▇▇▇▆▆▄▅▃▄▁▄▅365354354358344347325327307321288321332NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService csx:Chemicals█▄▅▅▄▆▅▅▂▁▁▂▃626577589591586598596588557546546552566NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService csx:CoalServices▁▃▅▇▆██▇▅▆▅▆▅405459516557538586588569503541514530522NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService csx:Intermodal▁▃▃▂▂▇█▇▃▅▃▃▂422449447436428492500490449471446448434NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService csx:TotalMerchandise█▆▇█▆▇▇▇▃▃▁▄▅1927186019061944187919151890190717791743168817981839NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▅▆▆▇▆▇▇▇▆▅▅▆▆▇▄▄▄▅▆▇▇███▆▇▆▇▆▆▆▆▆▆▆▆▆▇▅▅▄▄▃▂▂▁▁28552885297830613013314331293102287628632743293328693037271027042618278129393064302731923221324430123032299930692963296328952884289430122966295129633019281028162666266324912320228921852247
us-gaap:OperatingCostsAndExpenses 1677NANANA1794NANANANANANANANANANANANANANA559627624610621629NA576560507507NANA525550542NA562557530NA509551NANANANANA
 us-gaap:OperatingCostsAndExpenses us-gaap:ConsolidatedEntities srt:Subsidiaries1814NANANA1968NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ▇▇██▇███▆▆▄▅▃▅▄▄▃▃▅▅▄▄▅▅▃▄▄▅▄▄▄▄▄▅▄▄▄▅▃▄▄▃▂▂▂▂▁117811541287130512191249129312831044112187695871210048418407047919331017843901976997739813854963880880815804854943856841878926773846825768632579594577520
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidatedEntities srt:Subsidiaries▆▅▇▇▆▇██▄▇▁▄10199521096109510251099115811359141060694890NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▆▆██▇▇██▅▆▃▄▁1013981112511461064109811501144912983750827582NA715707568741799887711775813850606NA723832725725NANA721809716NA746792638NA702642NANANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidatedEntities srt:ParentCompany▂▂▂▂▂▂▂▂▁█▁▁7437358108538038248558516764142455465NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidatedEntities srt:Subsidiaries▆▅▇▇▆███▄▆▁▄10549991132113610661153118211569281054710889NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NonoperatingIncomeExpense ▇▅██▇▆▆▆▆▁▂▂▃2216242523201918172667NA1387902427-26NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NonoperatingIncomeExpense us-gaap:ConsolidatedEntities srt:ParentCompany5NANANA8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NonoperatingIncomeExpense us-gaap:ConsolidatedEntities srt:Subsidiaries45NANANA52NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit █████████▁███243210269276230255256267217-3157291317220NA260262212275292334269284304321208NA260297266266NANA266297267NA282286243NA288228196NANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidatedEntities srt:Subsidiaries█████████▁██255221267276245260278274224-3091277332NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:NetIncomeLoss ▂▂▂▂▂▂▂▂▂█▁▁▁▁▁▁▁▁▁▂▁▁▁▂▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁7707718568708348438948776954140459510362458455445356466507553442491509529398426463535462462449443455512449457464506395430414414305303290305245
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  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
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us-gaap:LiabilitiesAndStockholdersEquity ███▇▇▆▆▆▇▅▅▅▅▅▄▄▄▅▄▄▃▃▃▂▂▂▁▁▁▁388343825738795379243815436729368613692437439357393557335861357123541434681345503461035039340153377733161330533262331975316803178230943308813058630586NA305712993029589291862947328248287052757728141NANANA26887NANANA
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  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:AssetsCurrent █▆█▅▆▃▄▄▇▁▂▃▄▃▂▂▃▅▃▄▃▃▄▃▂▃▂▃▃▃382132783960318634792565278428813542191521722630266024872163222826082966250226692457257226762372228926022200248925672567NA280123932372246829352301296721712855NANANA2570NANANA
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us-gaap:ShortTermInvestments ▄██▇▇▃▅▁▁▁▂▄▃▄▂▃▃▆▄▆▃▃▅▂▃▄▂▄▃▃4879961037878822253615831018113477287417152262375810425680257292575216248487128403367367NA587354113952361435654NANANA61NANANA
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us-gaap:AccountsReceivableNetCurrent ▄▃▇▇▇▄▇▅▅▃▃▄▂▂▁▁▁▃▄▅▇██▆▆▆▃▂▃▃10089861101111111061010109010361045970981101594393892591291798210031022110311291123106210731052981946976976NA9621163113611611129114811121068993NANANA995NANANA
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us-gaap:OtherAssetsCurrent ▂▂▁▄▄█▅▄▅▆▃▃▂▄▂▂▂▁▂▃▃▁▃▅▃▁▂▄▃▃7477661221221811331161381549590851228689837087102996895123916485118103103NA7510412511278112123102106NANANA124NANANA
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  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:PropertyPlantAndEquipmentGross ███████▇▇▇▇▇▇▆▆▆▆▆▅▄▄▄▃▃▂▂▂▁▁▁450654510045012447564482644805444854430644103440004410543751433994300042720423454186542000408434031339824393433853338010376043718436637361493567435674NA352793502034616340023370433141327773236032065NANANA30907NANANA
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us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ██████▇▇▇▇▇▇▆▆▆▆▅▅▅▄▄▄▃▃▂▂▂▁▁▁1287712932129341273712838128071261412459123551256012526123241214012077119381173811572114001120611063109521075910539103251011098939691955093869386NA922990888984886187308723857584458266NANANA7843NANANA
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:ConsolidatedEntities srt:Subsidiaries▅▇█▄▇▇▄▁1111011199112311107411191111941104310928NA11017NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:PropertyPlantAndEquipmentNet ████████▇▇▇▇▇▇▆▆▆▆▅▅▄▄▃▃▂▂▂▁▁▁321883216832078320193198831998318713184731748317643157931427312593115030782306073029330174296372925028872285842799427685274942729126946265992628826288NA260502593225632251412497424418242022391523799NANANA23064NANANA
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 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities,us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization srt:ParentCompany,us-gaap:InvestmentsInMajorityOwnedSubsidiaries█▁3513434528NANANA32033NANANA29405NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidationItems,us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization srt:ConsolidationEliminations,csx:AffiliatesAndOtherCompanies▁▁▄▆▆▆▆█1313151616161617NA18NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:OtherAssetsNoncurrent ▃▃▃▂▂▃▄▄▄▃▁▁▂▁▁▁▁▆▆▅▅▆██▇█▇▇▆▆401400369347344387442455435374316317324318303302307505500492479541608587583591556565516516NA514410402399393361378351353NANANA165NANANA
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  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:LiabilitiesCurrent ▄▄█▃▃▃▃▁▂▂▃▁▅▃▅▅▁▃▃▂▃▄▄█▄▆▅▆▆▆221121512805205319261915194417321891189420751672227720402263228216921952192217782038210722312797221224242251241824742474NA262730212575259326872568248522222537NANANA1865NANANA
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us-gaap:AccountsPayableCurrent ▇▇█▆▆▅▆▃▄▃▄▂▄▂▃▁▂▁▃▁▃▃▆▄▅▅█▆▇▇10581043110198910199499828529058479058108988068597668157648427728588459869009759571078102210431043NA101411971055120511471170107610241046NANANA967NANANA
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  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
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us-gaap:OtherLiabilitiesNoncurrent ▁▁▁▁▁▁▂▂▂▂▃▃▄▄▆▆▆▆▆▆▆▆▃▃▄▄████568591548568583594613636646650766797903863110511371145116211181138110011228408478598701366137813931393NA145712841315133015251283128512891298NANANA1284NANANA
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  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:CommonStockValue ▁▁▁▂▂▂▃▄▄▄▅▅▅▅▆▆▆▆▇▇▇▇▇▇██████7657737827988098188448598758908949139239289379469569669759849889929951000100410091014101910221022NA1020103110401039104910501095368370NANANA393NANANA
 us-gaap:CommonStockValue us-gaap:ConsolidatedEntities srt:ParentCompany▁█765773NANANA818NANANA890NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▄▄▄▅▅▅▇▇██▃▄▄▄▄▄▄▄▄▄▃▃▃▃▂▂▂▁▁▁1141211404114161184312011121571332013604138731408410327110331119711253112331119911183112381119511117108951073410527103041006299369670948291919191NA887687988679831382757944858291349087NANANA9090NANANA
 us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities srt:ParentCompany█▁1141211404NANANA12157NANANA14084NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities srt:Subsidiaries█▇▆▅▄▃▂▁2619525646251182450323893233222267922025NA20933NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▅▅▅▅▅▇▆▆█▇▇▆▅▅▅▅▅▅▅▅▅███▇▂▁▁▁-672-675-648-655-659-661-574-581-585-486-561-569-634-640-639-649-658-665-645-656-668-666-483-492-507-523-886-902-919-919NA-936-833-849-866-875-738-747-760-771NANANA-809NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities srt:Subsidiaries▆▆████▁▁363549505153-11-10NA-5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidationItems srt:ConsolidationEliminations▃▃▁▁▁▁██-36-35-49-50-51-531110NA5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▅█▅▆▆▇▅▄▂▇▁▅1178111314701094117312351397104396661112955231043NA8968387548589308926901041857846599NANANA731731NANANANA444NANANA506NANANA744NANANANA
 us-gaap:NetCashProvidedByUsedInOperatingActivities us-gaap:ConsolidatedEntities srt:ParentCompany▆▅█▆▆▆█▅▅▁▆85570810967848527651106620691129776NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInOperatingActivities us-gaap:ConsolidatedEntities srt:Subsidiaries▇█▇▇▇▁▇██▇▇514643565531533-135547624621568571NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities █▄▄▄▁▆▁▄▅▄▆▂▅144-373-473-386-870-97-832-439-316-416-112-681-286NA-412-52241-941-377-1074-500-563-970-423-227NANANA-265-265NANANANA-77NANANA-376NANANA-310NANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities srt:ParentCompany█▅▄▄▁▇▁▄▅▅▇50753-149-58-564357-534-75-1100365NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▁▄▂▅▂▁▁█▄▁▅▄-285-1303-329-104327-943-1222-1264929-385-1212-152-430NA-447-481-692170-45059-298-28819-325-489NANANA-545-545NANANANA-523NANANA-888NANANA-470NANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidationItems srt:ConsolidationEliminations█████████▂▁250250251249250254253252253153140NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▅█▅▆▆▇▅▄▂▇▁▅1178111314701094117312351397104396661112955231043NA8968387548589308926901041857846599NANANA731731NANANANA444NANANA506NANANA744NANANANA
 us-gaap:NetCashProvidedByUsedInOperatingActivities us-gaap:ConsolidatedEntities srt:ParentCompany▆▅█▆▆▆█▅▅▁▆85570810967848527651106620691129776NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInOperatingActivities us-gaap:ConsolidatedEntities srt:Subsidiaries▇█▇▇▇▁▇██▇▇514643565531533-135547624621568571NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▂▂▂▂▂▂▂▂▂█▁▁▁▁▁▁▁▁▁▂▁▁▁▂▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁7707718568708348438948776954140459510362458455445356466507553442491509529398426463535462462449443455512449457464506395430414414305303290305245
 us-gaap:NetIncomeLoss us-gaap:ConsolidatedEntities srt:ParentCompany▂▂▂▂▂▂▂▂▁█▁▁7707718568708348438948776954140459510NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:ConsolidatedEntities srt:Subsidiaries▂▂▂▂▂▂▂▂▂█▁▁7997788658608218939048827044145433557NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings770NA856870834NA894877695NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:NetCashProvidedByUsedInInvestingActivities █▄▄▄▁▆▁▄▅▄▆▂▅144-373-473-386-870-97-832-439-316-416-112-681-286NA-412-52241-941-377-1074-500-563-970-423-227NANANA-265-265NANANANA-77NANANA-376NANANA-310NANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities srt:ParentCompany█▅▄▄▁▇▁▄▅▅▇50753-149-58-564357-534-75-1100365NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▅▃▃▁▆▃▄▁█▆▆▄381466422416353505417455368578507514441NA524641425653621690598892601481475NANANA491491NANANANA469NANANA390NANANA328NANANANA
 us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:ConsolidatedEntities srt:Subsidiaries▂▄▃▃▁▅▃▄▂█▅341421378388319446372423339537438NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:ConsolidationItems srt:ConsolidationEliminations▃▄▄▁▂▆▄▂▁▃█4045442834594532294169NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▁▄▂▅▂▁▁█▄▁▅▄-285-1303-329-104327-943-1222-1264929-385-1212-152-430NA-447-481-692170-45059-298-28819-325-489NANANA-545-545NANANANA-523NANANA-888NANANA-470NANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidationItems srt:ConsolidationEliminations█████████▂▁250250251249250254253252253153140NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▃▁▄▁▄▄▁▁█▁▁▄▁50001000010001000002000008500NA0NANA6000NANA01000NANANANANA00NANANANA300NANANA0NANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:BalanceSheetLocation csx:LongTermLiabilities500NA100001000NA002000NA0NANANANANANANA0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:ConsolidatedEntities srt:ParentCompany▃▁▄▁▄▄▁▁█▁▁5000100001000100000200000NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▃▃▅▄▃█▄▄▄▁▄▂▁5776061111860796187110009748362071000499258NA263266249258262157127129131131127NA1299500NANANANANANANANANANANANANANANANANA
 us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:ConsolidatedEntities srt:ParentCompany▃▃▅▄▄█▄▄▄▁▄5776061111860796185510069748362071006NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value7657737827988098188448598758908949139239289379469569669759849889929951000100410091014101910221020103110401039104910501095368370393
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.02.02.02.12.12.22.32.32.32.52.52.52.62.62.72.72.82.82.92.93.03.03.03.13.23.23.33.33.33.33.43.53.63.63.73.81.31.31.5

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value765773818890
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets2.02.02.22.5
Percentage of Assets srt:ParentCompany2.02.12.42.9

Common Stock Par Or Stated Value Per Share

Common Stock Shares Outstanding

us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-252008-12-26
Value765773782798809818844858875889928965991100810201049111111801171
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-09-252015-06-262015-03-272014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-252010-03-26
Value773792807817854868888906924929943952963982989992999100310081018102310231040104310491077110937111451159394
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-09-252015-06-262015-03-272014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-252010-03-26
Value772790805814850864885902920927942952962981988991999100310081017102210221038104110471071110236911341149391
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value1.00.991.081.081.021.021.051.020.784.630.510.550.390.490.480.470.370.480.520.560.450.490.510.530.40.420.460.520.450.450.440.430.440.490.430.440.430.461.071.151.091.080.780.770.740.780.63
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value1.00.991.081.081.021.011.051.010.784.620.510.550.390.490.480.470.370.480.520.560.450.490.510.530.40.420.460.520.450.450.440.430.440.490.430.430.430.461.061.141.081.070.780.770.730.770.62
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

Income Loss From Continuing Operations Per Diluted Share

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value28552885297830613013314331293102287628632743293328693037271027042618278129393064302731923221324430123032299930692963295828952884289430122966295129633019281028162666266324912320228921852247
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value283328642958304129933124311030832857284427252914
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax99.299.399.399.399.399.499.499.499.399.399.399.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax99.299.399.399.399.399.499.499.499.399.399.399.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value222120202019191919191819
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.70.70.70.70.60.60.60.70.70.70.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.70.70.70.70.60.60.60.70.70.70.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

csx:AgriculturalandFoodProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value365354354358344347325327307321288321332
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.812.311.911.711.411.010.410.510.711.210.510.911.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.812.311.911.711.411.010.410.510.711.210.510.911.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:AgriculturalandFoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:Automotive



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value281299297329311333300330304303269307316
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.810.410.010.710.310.69.610.610.610.69.810.511.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.810.410.010.710.310.69.610.610.610.69.810.511.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:Automotive100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:Chemicals



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value626577589591586598596588557546546552566
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.920.019.819.319.419.019.019.019.419.119.918.819.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.920.019.819.319.419.019.019.019.419.119.918.819.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:Chemicals100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:CoalServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value405459516557538586588569503541514530522
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.215.917.318.217.918.618.818.317.518.918.718.118.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.215.917.318.217.918.618.818.317.518.918.718.118.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:CoalServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:Fertilizers



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value112108101112110110104112116113106118129
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.93.73.43.73.73.53.33.64.03.93.94.04.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.93.73.43.73.73.53.33.64.03.93.94.04.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:Fertilizers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:ForestProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value217214225223216217223215195188181194192
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.67.47.67.37.26.97.16.96.86.66.66.66.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.67.47.67.37.26.97.16.96.86.66.66.66.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:ForestProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:Intermodal



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value422449447436428492500490449471446448434
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.815.615.014.214.215.716.015.815.616.516.315.315.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.815.615.014.214.215.716.015.815.616.516.315.315.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:Intermodal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:MetalsandEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value199170195187189180205198186157178178190
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.05.96.56.16.35.76.66.46.55.56.56.16.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.05.96.56.16.35.76.66.46.55.56.56.16.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:MetalsandEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:Minerals



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value127138145144123130137137114115120128114
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.44.84.94.74.14.14.44.44.04.04.44.44.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.44.84.94.74.14.14.44.44.04.04.44.44.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:Minerals100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:OtherServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1011171091241681501511361451089515774
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.54.13.74.15.64.84.84.45.03.83.55.42.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.54.13.74.15.64.84.84.45.03.83.55.42.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:OtherServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:TotalMerchandise



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1927186019061944187919151890190717791743168817981839
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax67.564.564.063.562.460.960.461.561.960.961.561.364.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax67.564.564.063.562.460.960.461.561.960.961.561.364.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:TotalMerchandise100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value28552885297830613013314331293102287628632743293328693037271027042618278129393064302731923221324430123032299930692963295828952884289430122966295129633019281028162666266324912320228921852247
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Sales Revenue Net

Operating Expenses

Operating Costs And Expenses

us-gaap:OperatingCostsAndExpenses



Period End2020-03-312019-03-312015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-25
Value16771794559627624610621629576560507525550542562557530509551
Percentage of OperatingCostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax58.759.518.220.719.518.919.120.919.218.217.118.118.318.319.018.418.919.120.7

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-03-31
Value-99-137
Percentage of OperatingCostsAndExpenses-5.9-7.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.5-4.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.0

srt:Subsidiaries



Period End2020-03-312019-03-31
Value18141968
Percentage of OperatingCostsAndExpenses108.2109.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.565.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries64.065.8

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-03-31
Value-38-37
Percentage of OperatingCostsAndExpenses-2.3-2.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.3-1.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-172.7-185.0

Costs And Expenses

Operating Income Loss

us-gaap:OperatingIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value117811541287130512191249129312831044112187695871210048418407047919331017843901976997739813854963880875815804854943856841878926773846825768632579594577520
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax41.340.043.242.640.539.741.341.436.339.231.932.724.833.131.031.126.928.431.733.227.828.230.330.724.526.828.531.429.729.628.227.929.531.328.928.529.630.727.530.030.928.825.425.026.026.423.1

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value9913613813813796868478-13129-6
Percentage of OperatingIncomeLoss8.411.810.710.611.27.76.76.57.5-1.214.7-0.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.54.74.64.54.53.12.72.72.7-0.54.7-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value10199521096109510251099115811359141060694890
Percentage of OperatingIncomeLoss86.582.585.283.984.188.089.688.587.594.679.292.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.733.036.835.834.035.037.036.631.837.025.330.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries36.033.237.136.034.235.237.236.832.037.325.530.5

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value606653725754496452794573
Percentage of OperatingIncomeLoss5.15.74.15.54.74.33.85.05.07.05.17.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.31.82.41.91.71.62.11.82.81.62.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations272.7314.3265.0360.0285.0284.2257.9336.8273.7415.8250.0384.2

Interest Expense

Other Nonoperating Income Expense

Income Loss From Continuing Operations

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-25
Value1013981112511461064109811501144912983750827582715707568741799887711775813850606723832725721809716746792638702642
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.534.037.837.435.334.936.836.931.734.327.328.220.326.426.121.726.627.228.923.524.325.226.220.124.127.124.524.926.924.125.226.222.726.324.1

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value7437358108538038248558516764142455465
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest73.374.972.074.475.575.074.374.474.1421.460.756.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.025.527.227.926.726.227.327.423.5144.716.615.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value10549991132113610661153118211569281054710889
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest104.0101.8100.699.1100.2105.0102.8101.0101.8107.294.7107.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.934.638.037.135.436.737.837.332.336.825.930.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries37.234.938.337.435.636.938.037.532.537.126.130.5

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-784-753-817-843-805-879-887-863-692-4213-415-527
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-77.4-76.8-72.6-73.6-75.7-80.1-77.1-75.4-75.9-428.6-55.3-63.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-27.5-26.1-27.4-27.5-26.7-28.0-28.3-27.8-24.1-147.2-15.1-18.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-3563.6-3585.7-4085.0-4215.0-4025.0-4626.3-4668.4-4542.1-3642.1-22173.7-2305.6-2773.7

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-26
Value22162425232019181726671387902427-26
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.60.80.80.80.60.60.60.60.10.20.20.20.50.30.33.20.10.10.10.2-0.8

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-03-31
Value58
Percentage of NonoperatingIncomeExpense22.734.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.0

srt:Subsidiaries



Period End2020-03-312019-03-31
Value4552
Percentage of NonoperatingIncomeExpense204.5226.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.61.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries1.61.7

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-03-31
Value-28-37
Percentage of NonoperatingIncomeExpense-127.3-160.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0-1.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-127.3-185.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-252010-03-26
Value243210269276230255256267217-3157291317220260262212275292334269284304321208260297266266297267282286243288228196
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.57.39.09.07.68.18.28.67.5-110.310.610.87.79.69.78.19.99.910.98.98.99.49.96.98.79.79.09.29.99.09.59.58.610.88.67.9

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-27-36-46-17-31-19-39-26-192-4-45
Percentage of IncomeTaxExpenseBenefit-11.1-17.1-17.1-6.2-13.5-7.5-15.2-9.7-8.8-0.1-1.4-14.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.2-1.5-0.6-1.0-0.6-1.2-0.8-0.70.1-0.1-1.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value255221267276245260278274224-3091277332
Percentage of IncomeTaxExpenseBenefit104.9105.299.3100.0106.5102.0108.6102.6103.297.995.2104.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.97.79.09.08.18.38.98.87.8-108.010.111.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries9.07.79.09.18.28.38.98.97.8-108.710.211.4

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value152548171614171912-681830
Percentage of IncomeTaxExpenseBenefit6.211.917.86.27.05.56.67.15.52.26.29.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.91.60.60.50.40.50.60.4-2.40.71.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations68.2119.0240.085.080.073.789.5100.063.2-357.9100.0157.9

Income Taxes Paid Net

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-252010-03-26
Value7737448638748367229018815964215467575368465454363477518565440308518544414479552476471529458473519406431424317
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.125.829.028.627.723.028.828.420.7147.217.019.612.817.216.813.917.217.618.414.59.616.116.813.716.018.016.116.317.615.416.017.214.416.215.912.7

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value7737448638748367569018815964215467575
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0104.7100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.125.829.028.627.724.128.828.420.7147.217.019.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value8007648648598199579038817004160433558
Percentage of ComprehensiveIncomeNetOfTax103.5102.7100.198.398.0132.5100.2100.0117.498.792.797.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.026.529.028.127.230.428.928.424.3145.315.819.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries28.226.729.228.227.430.629.028.624.5146.315.919.1

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-800-764-864-859-819-957-903-881-700-4160-433-558
Percentage of ComprehensiveIncomeNetOfTax-103.5-102.7-100.1-98.3-98.0-132.5-100.2-100.0-117.4-98.7-92.7-97.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.0-26.5-29.0-28.1-27.2-30.4-28.9-28.4-24.3-145.3-15.8-19.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-3636.4-3638.1-4320.0-4295.0-4095.0-5036.8-4752.6-4636.8-3684.2-21894.7-2405.6-2936.8

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value7707718568708348438948776954140459510362458455445356466507553442491509529398426463535462459449443455512449457464506395430414414305303290305245
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.026.728.728.427.726.828.628.324.2144.616.717.412.615.116.816.513.616.817.318.014.615.415.816.313.214.115.417.415.615.515.515.415.717.015.115.515.716.814.115.315.515.512.213.112.714.010.9

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value7707718568708348438948776954140459510
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.026.728.728.427.726.828.628.324.2144.616.717.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value7997788658608218939048827044145433557
Percentage of NetIncomeLoss103.8100.9101.198.998.4105.9101.1100.6101.3100.194.3109.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.027.029.028.127.228.428.928.424.5144.815.819.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries28.227.229.228.327.428.629.128.624.6145.715.919.1

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-799-778-865-860-821-893-904-882-704-4145-433-557
Percentage of NetIncomeLoss-103.8-100.9-101.1-98.9-98.4-105.9-101.1-100.6-101.3-100.1-94.3-109.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.0-27.0-29.0-28.1-27.2-28.4-28.9-28.4-24.5-144.8-15.8-19.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-3631.8-3704.8-4325.0-4300.0-4105.0-4700.0-4757.9-4642.1-3705.3-21815.8-2405.6-2931.6

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value770856870834894877695
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.028.728.427.728.628.324.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value388343825738795379243815436729368613692437439357393557335861357123541434681345503461035039340153377733161330533262331975316803178230943308813058630571299302958929186294732824828705275772814126887
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value38300373793404630903
Percentage of Assets98.697.792.786.5
Percentage of Assets98.697.792.786.5
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value420694177841254404213974638874380363722436314
Percentage of Assets108.3109.2106.3106.6104.2105.8103.2100.8101.6
Percentage of Assets108.3109.2106.3106.6104.2105.8103.2100.8101.6
Percentage of Assets srt:Subsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-41535-40900-39647-38306-37076-36191-34609-33157-31478
Percentage of Assets-107.0-106.9-102.2-101.0-97.2-98.5-93.9-89.8-88.1
Percentage of Assets-107.0-106.9-102.2-101.0-97.2-98.5-93.9-89.8-88.1
Percentage of Assets srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value269462639426916256342570924149231262290123048210182467124260240432372023011229252300423371223552220021823218772148121071210352127821075212192123821569208992069420682210051998019764188211944118119
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets69.469.069.467.667.465.762.762.061.658.869.467.767.367.066.466.466.566.765.765.765.866.265.865.966.466.968.168.769.470.669.869.970.971.370.768.968.269.167.4

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value26429255312148316198
Percentage of Liabilities98.196.789.077.1
Percentage of Assets68.166.758.545.3
Percentage of Assets srt:ParentCompany69.068.363.152.4

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value10544108051079510577105081020510075991810093
Percentage of Liabilities39.140.940.141.340.942.343.643.348.0
Percentage of Assets27.228.227.827.927.527.827.326.928.2
Percentage of Assets srt:Subsidiaries25.125.926.226.226.426.326.526.627.8

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-10027-9942-9203-8476-7855-7539-6664-5865-5273
Percentage of Liabilities-37.2-37.7-34.2-33.1-30.6-31.2-28.8-25.6-25.1
Percentage of Assets-25.8-26.0-23.7-22.3-20.6-20.5-18.1-15.9-14.8
Percentage of Assets srt:ConsolidationEliminations24.124.323.222.121.220.819.317.716.8

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value388343825738795379243815436729368613692437439357393557335861357123541434681345503461035039340153377733161330533262331975316803178230943308813058630571299302958929186294732824828705275772814126887
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value38300373793404630903
Percentage of LiabilitiesAndStockholdersEquity98.697.792.786.5
Percentage of Assets98.697.792.786.5
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value420694177841254404213974638874380363722436314
Percentage of LiabilitiesAndStockholdersEquity108.3109.2106.3106.6104.2105.8103.2100.8101.6
Percentage of Assets108.3109.2106.3106.6104.2105.8103.2100.8101.6
Percentage of Assets srt:Subsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-41535-40900-39647-38306-37076-36191-34609-33157-31478
Percentage of LiabilitiesAndStockholdersEquity-107.0-106.9-102.2-101.0-97.2-98.5-93.9-89.8-88.1
Percentage of Assets-107.0-106.9-102.2-101.0-97.2-98.5-93.9-89.8-88.1
Percentage of Assets srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StatementEquityComponents

us-gaap:StockholdersEquity

csx:AccumulatedOtherAdjustmentstoParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-65-56-58-60-60-57-50-48-45-46-57-59-61-60-62-64-65-64-67-66-55
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.2-0.1-0.1-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2
Percentage of Assets csx:AccumulatedOtherAdjustmentstoParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-607-619-590-595-599-604-524-533-540-440-504-510-573-580-577-585-593-601-578-590-611
Percentage of StockholdersEquity933.81105.41017.2991.7998.31059.61048.01110.41200.0956.5884.2864.4939.3966.7930.6914.1912.3939.1862.7893.91110.9
Percentage of Assets-1.6-1.6-1.5-1.6-1.6-1.6-1.4-1.4-1.4-1.2-1.4-1.4-1.6-1.6-1.7-1.7-1.7-1.7-1.7-1.7-1.8
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-672-675-648-655-659-661-574-581-585-486-561-569-634-640-639-649-658-665-645-656-666
Percentage of StockholdersEquity1033.81205.41117.21091.71098.31159.61148.01210.41300.01056.5984.2964.41039.31066.71030.61014.11012.31039.1962.7993.91210.9
Percentage of Assets-1.7-1.8-1.7-1.7-1.7-1.8-1.6-1.6-1.6-1.4-1.6-1.6-1.8-1.8-1.8-1.9-1.9-1.9-1.9-1.9-2.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value382132783960318634792565278428813542191521722630266024872163222826082966250226692457257226762372228926022200248925672801239323722468293523012967217128552570
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.88.610.28.49.17.07.67.89.55.46.17.37.47.06.26.47.58.57.47.97.47.88.27.47.28.27.18.18.49.28.08.08.510.08.110.37.910.19.6

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value3202288720501498
Percentage of AssetsCurrent83.888.179.978.2
Percentage of Assets8.27.55.64.2
Percentage of Assets srt:ParentCompany8.47.76.04.8

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value908188018399766870496714599151984456
Percentage of AssetsCurrent237.7268.5212.1240.7202.6261.8215.2180.4232.7
Percentage of Assets23.423.021.620.218.518.316.314.112.5
Percentage of Assets srt:Subsidiaries21.621.120.419.017.717.315.814.012.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-8462-8410-7697-6995-6437-6199-5315-4563-4039
Percentage of AssetsCurrent-221.5-256.6-194.4-219.6-185.0-241.7-190.9-158.4-210.9
Percentage of Assets-21.8-22.0-19.8-18.4-16.9-16.9-14.4-12.4-11.3
Percentage of Assets srt:ConsolidationEliminations20.420.619.418.317.417.115.413.812.8

Cash And Cash Equivalents At Carrying Value

Short Term Investments

us-gaap:ShortTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value487996103787882225361583101811347728741715226237581042568025729257521624848712840336758735411395236143565461
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.32.62.72.32.20.71.70.20.00.10.31.30.81.20.40.81.12.31.22.00.80.91.80.70.81.50.41.31.21.90.10.10.51.80.20.10.20.20.2

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value4849892500
Percentage of ShortTermInvestments99.499.398.80.0
Percentage of Assets1.22.60.70.0
Percentage of Assets srt:ParentCompany1.32.60.70.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3799935818
Percentage of ShortTermInvestments0.60.70.91.01.11.20.89.6100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.1
Percentage of Assets srt:ConsolidationEliminations-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value100898611011111110610101090103610459709811015943938925912917982100310221103112911231062107310529819469769621163113611611129114811121068993995
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.62.82.92.92.73.02.82.82.72.82.82.62.62.72.62.62.82.93.03.33.43.43.33.43.33.23.13.23.13.93.84.03.84.13.93.93.53.7

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value041-1
Percentage of AccountsReceivableNetCurrent0.00.40.1-0.1
Percentage of Assets0.00.00.0-0.0
Percentage of Assets srt:ParentCompany0.00.00.0-0.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value9969691044105810581003221271301
Percentage of AccountsReceivableNetCurrent98.898.394.895.295.799.320.326.231.0
Percentage of Assets2.62.52.72.82.82.70.60.70.8
Percentage of Assets srt:Subsidiaries2.42.32.52.62.72.60.60.70.8

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value12135551486868771670
Percentage of AccountsReceivableNetCurrent1.21.35.04.64.30.679.674.469.1
Percentage of Assets0.00.00.10.10.10.02.42.11.9
Percentage of Assets srt:ConsolidationEliminations-0.0-0.0-0.1-0.1-0.1-0.0-2.5-2.3-2.1

Other Assets Current

us-gaap:OtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value74776612212218113311613815495908512286898370871029968951239164851181037510412511278112123102106124
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.30.30.50.40.30.40.40.30.30.20.30.20.30.20.20.30.30.30.20.30.40.30.20.30.40.30.20.30.40.40.30.40.40.40.40.5

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value02663-1
Percentage of OtherAssetsCurrent0.033.834.8-0.6
Percentage of Assets0.00.10.2-0.0
Percentage of Assets srt:ParentCompany0.00.10.2-0.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6330509810910411598145
Percentage of OtherAssetsCurrent85.139.075.880.389.357.586.584.594.2
Percentage of Assets0.20.10.10.30.30.30.30.30.4
Percentage of Assets srt:Subsidiaries0.10.10.10.20.30.30.30.30.4

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value112117211314181810
Percentage of OtherAssetsCurrent14.927.325.817.210.77.713.515.56.5
Percentage of Assets0.00.10.00.10.00.00.00.00.0
Percentage of Assets srt:ConsolidationEliminations-0.0-0.1-0.0-0.1-0.0-0.0-0.1-0.1-0.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value450654510045012447564482644805444854430644103440004410543751433994300042720423454186542000408434031339824393433853338010376043718436637361493567435279350203461634002337043314132777323603206530907
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets116.0117.9116.0118.0117.5122.0120.7120.0117.8123.1124.0122.0121.5121.4123.2122.6121.0119.9120.1119.4120.1119.0118.1118.9118.7117.0118.4117.1116.6115.4117.0117.0116.5114.4117.3114.2117.3113.9115.0

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value420404211042055418214189641897416294149241479
Percentage of PropertyPlantAndEquipmentGross93.393.493.493.493.593.593.693.694.3
Percentage of Assets108.3110.1108.4110.3109.8114.1112.9112.4116.1
Percentage of Assets srt:Subsidiaries99.9100.8101.9103.5105.4107.8109.4111.5114.2

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value302429892956293429292907285528132844
Percentage of PropertyPlantAndEquipmentGross6.76.66.66.66.56.56.46.36.5
Percentage of Assets7.87.87.67.77.77.97.77.68.0
Percentage of Assets srt:ConsolidationEliminations-7.3-7.3-7.5-7.7-7.9-8.0-8.2-8.5-9.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value1287712932129341273712838128071261412459123551256012526123241214012077119381173811572114001120611063109521075910539103251011098939691955093869229908889848861873087238575844582667843
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.233.833.333.633.634.934.233.733.035.135.234.434.034.134.434.033.432.532.932.833.032.632.332.331.931.131.330.930.730.230.430.430.429.630.929.930.629.429.2

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value111101119911231110741119111194110431092811017
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment86.386.686.886.987.287.487.587.787.7
Percentage of Assets28.629.328.929.229.330.530.029.630.8
Percentage of Assets srt:Subsidiaries26.426.827.227.428.228.829.029.430.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value176617321702166216461612157015301542
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment13.713.413.213.012.812.612.412.312.3
Percentage of Assets4.54.54.44.44.34.44.34.14.3
Percentage of Assets srt:ConsolidationEliminations-4.3-4.2-4.3-4.3-4.4-4.5-4.5-4.6-4.9

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value321883216832078320193198831998318713184731748317643157931427312593115030782306073029330174296372925028872285842799427685274942729126946265992628826050259322563225141249742441824202239152379923064
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets82.984.182.784.483.887.186.586.384.888.988.887.687.588.088.888.687.586.187.186.687.186.585.886.686.885.987.186.185.985.286.686.686.184.786.484.386.784.685.8

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value309303091130824307473070530703305863056430462
Percentage of PropertyPlantAndEquipmentNet96.196.196.196.096.096.096.096.095.9
Percentage of Assets79.680.879.581.180.583.683.082.885.2
Percentage of Assets srt:Subsidiaries73.574.074.776.177.379.080.482.183.9

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value125812571254127212831295128512831302
Percentage of PropertyPlantAndEquipmentNet3.93.93.94.04.04.04.04.04.1
Percentage of Assets3.23.33.23.43.43.53.53.53.6
Percentage of Assets srt:ConsolidationEliminations-3.0-3.1-3.2-3.3-3.5-3.6-3.7-3.9-4.1

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:ConsolidatedEntities, us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

srt:ParentCompany, us-gaap:InvestmentsInMajorityOwnedSubsidiaries



Period End2020-03-312019-12-312018-12-312017-12-31
Value35134345283203329405
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0
Percentage of Assets90.590.387.282.3
Percentage of Assets srt:ParentCompany us-gaap:InvestmentsInMajorityOwnedSubsidiaries0.00.00.00.0

srt:Subsidiaries, csx:AffiliatesAndOtherCompanies



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value934923904886868859846832800
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures2.72.70.00.00.02.70.00.02.7
Percentage of Assets2.42.42.32.32.32.32.32.32.2
Percentage of Assets srt:Subsidiaries csx:AffiliatesAndOtherCompanies0.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization

srt:ConsolidationEliminations, csx:AffiliatesAndOtherCompanies



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value131315161616161718
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures0.00.00.00.00.00.00.00.00.1
Percentage of Assets0.00.00.00.00.00.00.00.00.1
Percentage of Assets srt:ConsolidationEliminations csx:AffiliatesAndOtherCompanies0.00.00.00.00.00.00.00.00.0

srt:ConsolidationEliminations, csx:InvestmentsInJointVentures



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value993982969959948943941931907
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures2.82.80.00.00.02.90.00.03.1
Percentage of Assets2.62.62.52.52.52.62.62.52.5
Percentage of Assets srt:ConsolidationEliminations csx:InvestmentsInJointVentures0.00.00.00.00.00.00.00.00.0

srt:ConsolidationEliminations, us-gaap:InvestmentsInMajorityOwnedSubsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-35134-34528-33966-33332-32656-32033-31288-30585-29405
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures-100.0-100.00.00.00.0-100.00.00.0-100.0
Percentage of Assets-90.5-90.3-87.6-87.9-85.6-87.2-84.9-82.8-82.3
Percentage of Assets srt:ConsolidationEliminations us-gaap:InvestmentsInMajorityOwnedSubsidiaries0.00.00.00.00.00.00.00.00.0

us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization

csx:AffiliatesAndOtherCompanies



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302010-12-31
Value908897880863845836823810796779642631622619603595591591583579575577570563558546526519512511502496495493481461
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures2.62.60.00.00.02.60.00.00.02.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets2.32.32.32.32.22.32.22.22.12.21.81.81.71.71.71.71.71.71.71.71.71.71.71.81.81.71.71.71.71.71.71.71.71.71.71.6
Percentage of Assets csx:AffiliatesAndOtherCompanies0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

csx:InvestmentsInJointVentures



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302010-12-31
Value993982969959948943941931918907864856847840830818811803793787778779775768756752715709703695693687683678687673
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures2.82.80.00.00.02.90.00.00.03.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets2.62.62.52.52.52.62.62.52.52.52.42.42.42.42.42.42.32.32.32.32.32.42.42.42.42.42.32.32.32.32.32.32.32.32.42.4
Percentage of Assets csx:InvestmentsInJointVentures0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Goodwill

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value401400369347344387442455435374316317324318303302307505500492479541608587583591556565516514410402399393361378351353165
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.01.00.90.91.11.21.21.21.00.90.90.90.90.90.90.91.41.51.51.41.61.91.81.81.91.81.81.71.71.41.41.41.31.31.31.31.30.6

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value33239
Percentage of OtherAssetsNoncurrent0.70.80.510.4
Percentage of Assets0.00.00.00.1
Percentage of Assets srt:ParentCompany0.00.00.00.1

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value623629608591596598613630596
Percentage of OtherAssetsNoncurrent155.4157.2164.8170.3173.3154.5138.7138.5159.4
Percentage of Assets1.61.61.61.61.61.61.71.71.7
Percentage of Assets srt:Subsidiaries1.51.51.51.51.51.51.61.71.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-225-232-242-247-252-213-248-240-261
Percentage of OtherAssetsNoncurrent-56.1-58.0-65.6-71.2-73.3-55.0-56.1-52.7-69.8
Percentage of Assets-0.6-0.6-0.6-0.7-0.7-0.6-0.7-0.6-0.7
Percentage of Assets srt:ConsolidationEliminations0.50.60.60.60.70.60.70.70.8

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value221121512805205319261915194417321891189420751672227720402263228216921952192217782038210722312797221224242251241824742627302125752593268725682485222225371865
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.75.67.25.45.05.25.34.75.15.35.84.76.45.86.56.64.95.65.75.36.16.46.88.77.07.67.37.88.18.610.18.78.99.19.18.78.19.06.9

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value9885945768674628
Percentage of LiabilitiesCurrent447.1439.7358.6244.4
Percentage of Assets25.524.718.712.9
Percentage of Assets srt:ParentCompany25.825.320.215.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value236926542735254822832507238922572476
Percentage of LiabilitiesCurrent107.1123.497.5124.1118.5130.9122.9130.3130.7
Percentage of Assets6.16.97.06.76.06.86.56.16.9
Percentage of Assets srt:Subsidiaries5.66.46.66.35.76.46.36.16.8

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-10043-9960-9197-8414-7798-7459-6599-5805-5210
Percentage of LiabilitiesCurrent-454.2-463.0-327.9-409.8-404.9-389.5-339.5-335.2-275.1
Percentage of Assets-25.9-26.0-23.7-22.2-20.4-20.3-17.9-15.7-14.6
Percentage of Assets srt:ConsolidationEliminations24.224.423.222.021.020.619.117.516.6

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value1058104311019891019949982852905847905810898806859766815764842772858845986900975957107810221043101411971055120511471170107610241046967
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.72.82.62.72.62.72.32.42.42.52.32.52.32.52.22.42.22.52.32.62.63.02.83.13.03.53.33.43.34.03.64.13.94.13.73.73.73.6

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value194153132105
Percentage of AccountsPayableCurrent18.314.713.912.4
Percentage of Assets0.50.40.40.3
Percentage of Assets srt:ParentCompany0.50.40.40.3

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value811830832783773763753710708
Percentage of AccountsPayableCurrent76.779.675.679.275.980.476.783.383.6
Percentage of Assets2.12.22.12.12.02.12.01.92.0
Percentage of Assets srt:Subsidiaries1.92.02.01.91.92.02.01.91.9

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value536069534454404934
Percentage of AccountsPayableCurrent5.05.86.35.44.35.74.15.84.0
Percentage of Assets0.10.20.20.10.10.10.10.10.1
Percentage of Assets srt:ConsolidationEliminations-0.1-0.1-0.2-0.1-0.1-0.1-0.1-0.1-0.1

Taxes Payable Current

us-gaap:TaxesPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value26969155133193106166123274157322953021299013717010828224328816324922924691138111206852612281341291291379385112
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.20.40.40.50.30.50.30.70.40.90.30.80.40.30.40.50.30.80.70.90.50.80.70.80.30.40.40.70.30.90.80.50.40.50.50.30.30.4

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value-184-286-290-326
Percentage of TaxesPayableCurrent-68.4-414.5-273.6-207.6
Percentage of Assets-0.5-0.7-0.8-0.9
Percentage of Assets srt:ParentCompany-0.5-0.8-0.9-1.1

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value431340570519444392542480455
Percentage of TaxesPayableCurrent160.2492.8367.7390.2230.1369.8326.5390.2289.8
Percentage of Assets1.10.91.51.41.21.11.51.31.3
Percentage of Assets srt:Subsidiaries1.00.81.41.31.11.01.41.31.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value22151337244393228
Percentage of TaxesPayableCurrent8.221.78.427.812.43.823.526.017.8
Percentage of Assets0.10.00.00.10.10.00.10.10.1
Percentage of Assets srt:ConsolidationEliminations-0.1-0.0-0.0-0.1-0.1-0.0-0.1-0.1-0.1

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value1852052081641781791511381441611061271871141091501594391871191131161081281131051111191381401721791921801011689297100
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.50.40.50.50.40.40.40.50.30.40.50.30.30.40.51.30.50.40.30.40.30.40.40.30.40.40.50.50.60.60.70.60.40.60.30.30.4

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value00115
Percentage of OtherLiabilitiesCurrent0.00.06.13.1
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value168192197153165162148126153
Percentage of OtherLiabilitiesCurrent90.893.794.793.392.790.598.091.395.0
Percentage of Assets0.40.50.50.40.40.40.40.30.4
Percentage of Assets srt:Subsidiaries0.40.50.50.40.40.40.40.30.4

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value171311111262103
Percentage of OtherLiabilitiesCurrent9.26.35.36.76.73.41.37.21.9
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets srt:ConsolidationEliminations-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0

Long Term Debt

Deferred Tax Liabilities Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value171515141717161413161514131514131316151423242322212120191814151413131211141414
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.00.10.00.00.00.00.00.10.00.1

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value171515141717161416
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets srt:Subsidiaries0.00.00.00.00.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value568591548568583594613636646650766797903863110511371145116211181138110011228408478598701366137813931457128413151330152512831285128912981284
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.51.41.51.51.61.71.71.71.82.22.22.52.43.23.33.33.33.33.43.33.42.62.62.72.74.44.54.64.84.34.44.65.24.54.54.74.64.8

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value669692721644
Percentage of OtherLiabilitiesNoncurrent117.8117.1121.499.1
Percentage of Assets1.71.82.01.8
Percentage of Assets srt:ParentCompany1.71.92.12.1

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value212215203209213211300305320
Percentage of OtherLiabilitiesNoncurrent37.336.437.036.836.535.548.948.049.2
Percentage of Assets0.50.60.50.60.60.60.80.80.9
Percentage of Assets srt:Subsidiaries0.50.50.50.50.50.50.80.80.9

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-313-316-330-334-334-338-304-307-314
Percentage of OtherLiabilitiesNoncurrent-55.1-53.5-60.2-58.8-57.3-56.9-49.6-48.3-48.3
Percentage of Assets-0.8-0.8-0.9-0.9-0.9-0.9-0.8-0.8-0.9
Percentage of Assets srt:ConsolidationEliminations0.80.80.80.90.90.90.90.91.0

Stockholders Equity

us-gaap:StatementEquityComponents

us-gaap:StockholdersEquity

csx:AccumulatedOtherAdjustmentstoParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-65-56-58-60-60-57-50-48-45-46-57-59-61-60-62-64-65-64-67-66-55
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.2-0.1-0.1-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2
Percentage of Assets csx:AccumulatedOtherAdjustmentstoParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-607-619-590-595-599-604-524-533-540-440-504-510-573-580-577-585-593-601-578-590-611
Percentage of StockholdersEquity933.81105.41017.2991.7998.31059.61048.01110.41200.0956.5884.2864.4939.3966.7930.6914.1912.3939.1862.7893.91110.9
Percentage of Assets-1.6-1.6-1.5-1.6-1.6-1.6-1.4-1.4-1.4-1.2-1.4-1.4-1.6-1.6-1.7-1.7-1.7-1.7-1.7-1.7-1.8
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-672-675-648-655-659-661-574-581-585-486-561-569-634-640-639-649-658-665-645-656-666
Percentage of StockholdersEquity1033.81205.41117.21091.71098.31159.61148.01210.41300.01056.5984.2964.41039.31066.71030.61014.11012.31039.1962.7993.91210.9
Percentage of Assets-1.7-1.8-1.7-1.7-1.7-1.8-1.6-1.6-1.6-1.4-1.6-1.6-1.8-1.8-1.8-1.9-1.9-1.9-1.9-1.9-2.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value7657737827988098188448598758908949139239289379469569669759849889929951000100410091014101910221020103110401039104910501095368370393
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.02.02.02.12.12.22.32.32.32.52.52.52.62.62.72.72.82.82.92.93.03.03.03.13.23.23.33.33.33.33.43.53.63.63.73.81.31.31.5

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value765773818890
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets2.02.02.22.5
Percentage of Assets srt:ParentCompany2.02.12.42.9

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value1141211404114161184312011121571332013604138731408410327110331119711253112331119911183112381119511117108951073410527103041006299369670948291918876879886798313827579448582913490879090
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets29.429.829.431.231.533.136.136.837.139.429.030.831.431.832.432.432.332.132.932.932.932.532.332.231.831.331.330.730.029.029.429.328.528.128.129.933.132.333.8

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value11412114041215714084
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0
Percentage of Assets29.429.833.139.4
Percentage of Assets srt:ParentCompany29.830.535.745.6

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value261952564625118245032389323322226792202520933
Percentage of RetainedEarningsAccumulatedDeficit229.5224.9220.0206.9198.9191.8170.3161.9148.6
Percentage of Assets67.567.064.764.662.663.561.559.658.6
Percentage of Assets srt:Subsidiaries62.361.460.960.660.160.059.659.257.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-26195-25646-25118-24503-23893-23322-22679-22025-20933
Percentage of RetainedEarningsAccumulatedDeficit-229.5-224.9-220.0-206.9-198.9-191.8-170.3-161.9-148.6
Percentage of Assets-67.5-67.0-64.7-64.6-62.6-63.5-61.5-59.6-58.6
Percentage of Assets srt:ConsolidationEliminations63.162.763.464.064.464.465.566.466.5

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-252008-12-26
Value-672-675-648-655-659-661-574-581-585-486-561-569-634-640-639-649-658-665-645-656-668-666-483-492-507-523-886-902-919-936-833-849-866-875-738-747-760-771-809-741
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-1.7-1.8-1.7-1.7-1.7-1.8-1.6-1.6-1.6-1.4-1.6-1.6-1.8-1.8-1.8-1.9-1.9-1.9-1.9-1.9-2.0-2.0-1.5-1.5-1.6-1.6-2.9-2.9-3.0-3.1-2.8-2.9-3.0-3.0-2.6-2.6-2.8-2.7-3.00.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value-672-675-661-486
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0
Percentage of Assets-1.7-1.8-1.8-1.4
Percentage of Assets srt:ParentCompany-1.8-1.8-1.9-1.6

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value363549505153-11-10-5
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-5.4-5.2-7.6-7.6-7.7-8.01.91.71.0
Percentage of Assets0.10.10.10.10.10.1-0.0-0.0-0.0
Percentage of Assets srt:Subsidiaries0.10.10.10.10.10.1-0.0-0.0-0.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-36-35-49-50-51-5311105
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax5.45.27.67.67.78.0-1.9-1.7-1.0
Percentage of Assets-0.1-0.1-0.1-0.1-0.1-0.10.00.00.0
Percentage of Assets srt:ConsolidationEliminations0.10.10.10.10.10.1-0.0-0.0-0.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value11781113147010941173123513971043966611129552310438968387548589308926901041857846599731444506744
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax41.338.649.435.738.939.344.633.633.621.347.217.836.433.131.028.830.931.629.122.832.626.626.119.924.715.018.029.9

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value85570810967848527651106620691129776
Percentage of NetCashProvidedByUsedInOperatingActivities72.663.674.671.772.661.979.259.471.521.159.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax29.924.536.825.628.324.335.320.024.04.528.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value514643565531533-135547624621568571
Percentage of NetCashProvidedByUsedInOperatingActivities43.657.838.448.545.4-10.939.259.864.393.044.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.022.319.017.317.7-4.317.520.121.619.820.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries18.122.519.117.517.8-4.317.620.221.720.021.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-191-238-191-221-212605-256-201-346-86-52
Percentage of NetCashProvidedByUsedInOperatingActivities-16.2-21.4-13.0-20.2-18.149.0-18.3-19.3-35.8-14.1-4.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.7-8.2-6.4-7.2-7.019.2-8.2-6.5-12.0-3.0-1.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-868.2-1133.3-955.0-1105.0-1060.03184.2-1347.4-1057.9-1821.1-452.6-288.9

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value144-373-473-386-870-97-832-439-316-416-112-681-286-412-52241-941-377-1074-500-563-970-423-227-265-77-376-310
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.0-12.9-15.9-12.6-28.9-3.1-26.6-14.2-11.0-14.5-4.1-23.2-10.0-15.2-19.31.6-33.8-12.8-35.1-16.5-17.6-30.1-13.0-7.5-9.0-2.6-13.4-12.4

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value50753-149-58-564357-534-75-1100365
Percentage of NetCashProvidedByUsedInInvestingActivities352.1-14.231.515.064.8-368.064.217.10.3-24.0-325.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.81.8-5.0-1.9-18.711.4-17.1-2.4-0.03.513.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-309-408-267-298-269403-306-313-407-444-391
Percentage of NetCashProvidedByUsedInInvestingActivities-214.6109.456.477.230.9-415.536.871.3128.8106.7349.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.8-14.1-9.0-9.7-8.912.8-9.8-10.1-14.2-15.5-14.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries-10.9-14.2-9.0-9.8-9.012.9-9.8-10.2-14.2-15.6-14.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-54-18-57-30-37-8578-5192-72-86
Percentage of NetCashProvidedByUsedInInvestingActivities-37.54.812.17.84.3883.5-1.011.6-29.117.376.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.9-0.6-1.9-1.0-1.2-27.30.3-1.63.2-2.5-3.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-245.5-85.7-285.0-150.0-185.0-4510.542.1-268.4484.2-378.9-477.8

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value-285-1303-329-104327-943-1222-1264929-385-1212-152-430-447-481-692170-45059-298-28819-325-489-545-523-888-470
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.0-45.2-11.0-34.10.9-30.0-39.1-40.732.3-13.4-44.2-5.2-15.0-16.5-17.8-26.46.1-15.31.9-9.8-9.00.6-10.0-16.2-18.4-17.6-31.6-18.9

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-285-1302-310-104028-943-1207-1267930-388-1191
Percentage of NetCashProvidedByUsedInFinancingActivities100.099.994.299.7103.7100.098.8100.2100.1100.898.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.0-45.1-10.4-34.00.9-30.0-38.6-40.832.3-13.6-43.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-250-251-270-252-251-254-268-249-254-150-161
Percentage of NetCashProvidedByUsedInFinancingActivities87.719.382.124.2-929.626.921.919.7-27.339.013.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.8-8.7-9.1-8.2-8.3-8.1-8.6-8.0-8.8-5.2-5.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries-8.8-8.8-9.1-8.3-8.4-8.1-8.6-8.1-8.9-5.3-5.9

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value250250251249250254253252253153140
Percentage of NetCashProvidedByUsedInFinancingActivities-87.7-19.2-76.3-23.9925.9-26.9-20.7-19.927.2-39.7-11.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.88.78.48.18.38.18.18.18.85.35.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations1136.41190.51255.01245.01250.01336.81331.61326.31331.6805.3777.8

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value11781113147010941173123513971043966611129552310438968387548589308926901041857846599731444506744
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax41.338.649.435.738.939.344.633.633.621.347.217.836.433.131.028.830.931.629.122.832.626.626.119.924.715.018.029.9

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value85570810967848527651106620691129776
Percentage of NetCashProvidedByUsedInOperatingActivities72.663.674.671.772.661.979.259.471.521.159.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax29.924.536.825.628.324.335.320.024.04.528.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value514643565531533-135547624621568571
Percentage of NetCashProvidedByUsedInOperatingActivities43.657.838.448.545.4-10.939.259.864.393.044.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.022.319.017.317.7-4.317.520.121.619.820.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries18.122.519.117.517.8-4.317.620.221.720.021.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-191-238-191-221-212605-256-201-346-86-52
Percentage of NetCashProvidedByUsedInOperatingActivities-16.2-21.4-13.0-20.2-18.149.0-18.3-19.3-35.8-14.1-4.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.7-8.2-6.4-7.2-7.019.2-8.2-6.5-12.0-3.0-1.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-868.2-1133.3-955.0-1105.0-1060.03184.2-1347.4-1057.9-1821.1-452.6-288.9

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value7707718568708348438948776954140459510362458455445356466507553442491509529398426463535462459449443455512449457464506395430414414305303290305245
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.026.728.728.427.726.828.628.324.2144.616.717.412.615.116.816.513.616.817.318.014.615.415.816.313.214.115.417.415.615.515.515.415.717.015.115.515.716.814.115.315.515.512.213.112.714.010.9

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value7707718568708348438948776954140459510
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.026.728.728.427.726.828.628.324.2144.616.717.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value7997788658608218939048827044145433557
Percentage of NetIncomeLoss103.8100.9101.198.998.4105.9101.1100.6101.3100.194.3109.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.027.029.028.127.228.428.928.424.5144.815.819.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries28.227.229.228.327.428.629.128.624.6145.715.919.1

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-799-778-865-860-821-893-904-882-704-4145-433-557
Percentage of NetIncomeLoss-103.8-100.9-101.1-98.9-98.4-105.9-101.1-100.6-101.3-100.1-94.3-109.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-28.0-27.0-29.0-28.1-27.2-28.4-28.9-28.4-24.5-144.8-15.8-19.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-3631.8-3704.8-4325.0-4300.0-4105.0-4700.0-4757.9-4642.1-3705.3-21815.8-2405.6-2931.6

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value770856870834894877695
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.028.728.427.728.628.324.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value144-373-473-386-870-97-832-439-316-416-112-681-286-412-52241-941-377-1074-500-563-970-423-227-265-77-376-310
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.0-12.9-15.9-12.6-28.9-3.1-26.6-14.2-11.0-14.5-4.1-23.2-10.0-15.2-19.31.6-33.8-12.8-35.1-16.5-17.6-30.1-13.0-7.5-9.0-2.6-13.4-12.4

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value50753-149-58-564357-534-75-1100365
Percentage of NetCashProvidedByUsedInInvestingActivities352.1-14.231.515.064.8-368.064.217.10.3-24.0-325.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.81.8-5.0-1.9-18.711.4-17.1-2.4-0.03.513.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-309-408-267-298-269403-306-313-407-444-391
Percentage of NetCashProvidedByUsedInInvestingActivities-214.6109.456.477.230.9-415.536.871.3128.8106.7349.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.8-14.1-9.0-9.7-8.912.8-9.8-10.1-14.2-15.5-14.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries-10.9-14.2-9.0-9.8-9.012.9-9.8-10.2-14.2-15.6-14.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-54-18-57-30-37-8578-5192-72-86
Percentage of NetCashProvidedByUsedInInvestingActivities-37.54.812.17.84.3883.5-1.011.6-29.117.376.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.9-0.6-1.9-1.0-1.2-27.30.3-1.63.2-2.5-3.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations-245.5-85.7-285.0-150.0-185.0-4510.542.1-268.4484.2-378.9-477.8

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value381466422416353505417455368578507514441524641425653621690598892601481475491469390328
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value341421378388319446372423339537438
Percentage of PaymentsToAcquirePropertyPlantAndEquipment89.590.389.693.390.488.389.293.092.192.986.4

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value4045442834594532294169
Percentage of PaymentsToAcquirePropertyPlantAndEquipment10.59.710.46.79.611.710.87.07.97.113.6

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value-285-1303-329-104327-943-1222-1264929-385-1212-152-430-447-481-692170-45059-298-28819-325-489-545-523-888-470
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.0-45.2-11.0-34.10.9-30.0-39.1-40.732.3-13.4-44.2-5.2-15.0-16.5-17.8-26.46.1-15.31.9-9.8-9.00.6-10.0-16.2-18.4-17.6-31.6-18.9

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-285-1302-310-104028-943-1207-1267930-388-1191
Percentage of NetCashProvidedByUsedInFinancingActivities100.099.994.299.7103.7100.098.8100.2100.1100.898.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-10.0-45.1-10.4-34.00.9-30.0-38.6-40.832.3-13.6-43.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ParentCompany0.00.00.00.00.00.00.00.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-250-251-270-252-251-254-268-249-254-150-161
Percentage of NetCashProvidedByUsedInFinancingActivities87.719.382.124.2-929.626.921.919.7-27.339.013.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.8-8.7-9.1-8.2-8.3-8.1-8.6-8.0-8.8-5.2-5.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:Subsidiaries-8.8-8.8-9.1-8.3-8.4-8.1-8.6-8.1-8.9-5.3-5.9

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value250250251249250254253252253153140
Percentage of NetCashProvidedByUsedInFinancingActivities-87.7-19.2-76.3-23.9925.9-26.9-20.7-19.927.2-39.7-11.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.88.78.48.18.38.18.18.18.85.35.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:ConsolidationEliminations1136.41190.51255.01245.01250.01336.81331.61326.31331.6805.3777.8

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232015-12-252015-09-252014-12-262014-09-262013-03-292012-03-302011-04-01
Value50001000010001000002000008500060000100003000
Percentage of ProceedsFromIssuanceOfLongTermDebt100.00.0100.00.0100.0100.00.00.0100.00.00.0100.00.00.0100.00.00.0100.00.0100.00.0

us-gaap:BalanceSheetLocation

csx:LongTermLiabilities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302015-09-25
Value50010000100000200000
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.00.0100.00.00.0100.00.00.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value5000100001000100000200000
Percentage of ProceedsFromIssuanceOfLongTermDebt100.00.0100.00.0100.0100.00.00.0100.00.00.0

Repayments Of Long Term Debt

Payments Of Dividends

Payments Of Dividends

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-09-272013-06-282013-03-29
Value5776061111860796187110009748362071000499258263266249258262157127129131131127129950
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value5776061111860796185510069748362071006
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.099.1100.6100.0100.0100.0100.6

Repayments Of Long Term Debt

Debt Instrument Interest Rate Stated Percentage

Effective Income Tax Rate Continuing Operations

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period

us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:RestrictedStockUnitsRSU, csx:LongtermIncentivePlan



Period End2020-02-182019-02-062019-02-282018-03-31
Value91000.065000.065000.085000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0100.0100.0

us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:PlanName

csx:CertainEmployees, us-gaap:PerformanceShares, csx:LongtermIncentivePlan



Period End2020-02-18
Value218000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod239.6

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5235325395505500
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.00.0

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value501514519529528
Percentage of OperatingLeaseRightOfUseAsset95.896.696.396.296.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value2218202122
Percentage of OperatingLeaseRightOfUseAsset4.23.43.73.84.0

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-03-312018-12-31
Value19959581188858
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-03-312018-12-31
Value18918141032716
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents94.885.086.983.4

srt:Subsidiaries



Period End2020-03-312019-12-312019-03-312018-12-31
Value91136143130
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents4.614.212.015.2

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-03-312018-12-31
Value1381312
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents0.70.81.11.4

Proceeds From Sale Of Short Term Investments

us-gaap:ProceedsFromSaleOfShortTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-01
Value93662867056025049034823646528720526014067018565025014057245623740953443720
Percentage of ProceedsFromSaleOfShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value930625670560250485000235465
Percentage of ProceedsFromSaleOfShortTermInvestments99.499.5100.0100.0100.099.00.00.00.099.6100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value63000534810
Percentage of ProceedsFromSaleOfShortTermInvestments0.60.50.00.00.01.0100.0100.0100.00.40.0

us-gaap:RetirementPlanType

csx:DefinedBenefitPlanNetPeriodicBenefitCostBeforeGainLossDuetoSettlementsandCurtailments

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-24
Value-1-21-122223244
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostBeforeGainLossDuetoSettlementsandCurtailments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-24
Value1-2-1-2-3-3-2-2-131414
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostBeforeGainLossDuetoSettlementsandCurtailments-100.0100.0-100.0200.0-150.0-150.0-100.0-100.0-33.3150.0350.0350.0

csx:EquipmentandOtherRents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-28
Value81101104103100938911210114797959010510510510811410111310710611410194969596
Percentage of EquipmentandOtherRents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

csx:ReclassificationofDebtLongTermDebttoShortTermDebt

csx:CurrentLiabilities



Period End2020-03-312019-09-30
Value10518
Percentage of ReclassificationofDebtLongTermDebttoShortTermDebt100.0100.0

csx:LongTermLiabilities



Period End2020-03-312019-09-30
Value-10-518
Percentage of ReclassificationofDebtLongTermDebttoShortTermDebt-100.0-100.0

us-gaap:LossContingenciesByNatureOfContingency

csx:SelfInsuredRetention

csx:TotalCasualty



Period End2020-03-312018-06-302018-06-012018-05-312018-05-31
Value7575755050
Percentage of SelfInsuredRetention100.0100.0100.0100.0

us-gaap:Range, us-gaap:AwardType, us-gaap:PlanName

csx:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsPayoutPercentageofTarget

srt:Maximum, us-gaap:PerformanceShares, csx:LongtermIncentivePlan



Period End2020-02-182019-06-302019-02-282019-03-31
Value2.00.02.02.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsPayoutPercentageofTarget100.00.0100.0100.0

us-gaap:Range, us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:PlanName

srt:Maximum, srt:ExecutiveOfficer, us-gaap:PerformanceShares, csx:LongtermIncentivePlan



Period End2020-02-182019-02-28
Value2.52.25
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsPayoutPercentageofTarget125.0112.5

us-gaap:StatementEquityComponents

csx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsExercisesinPeriodandOther

us-gaap:CommonStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0002000
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsExercisesinPeriodandOther100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType, us-gaap:PlanName

csx:SharebasedCompensationArrangementbySharebasedPaymentAwardPerShareWeightedAveragePriceofSharesIssued

us-gaap:EmployeeStock, csx:EmployeeStockPurchasePlan



Period End2020-03-312019-09-302019-03-31
Value61.5152.6652.81
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardPerShareWeightedAveragePriceofSharesIssued100.0100.0100.0

csx:StockIssuedDuringPeriodValueStockOptionsExercisedandOther



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value302624203-85104
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedandOther100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value212423212-88-2
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedandOther70.092.395.8105.066.7103.5-1.9

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302018-09-302018-06-302018-03-31
Value21-321-3
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedandOther6.73.8-12.566.7-1.2-2.9

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value714-1-12109
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedandOther23.33.816.7-5.0-33.3-2.4104.8

us-gaap:AllocatedShareBasedCompensationExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-252010-03-26
Value243113171313131213-12194438978-821081396575-36407111213923
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

csx:StockAwardsDirectors



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-25
Value2000200021002002
Percentage of AllocatedShareBasedCompensationExpense8.30.00.00.015.40.00.00.015.4-8.30.00.05.30.00.025.0

us-gaap:EmployeeStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1000000.01000000.01000000.01000000.00.00.00.0
Percentage of AllocatedShareBasedCompensationExpense4.27.75.97.70.00.00.0

us-gaap:EmployeeStockOption



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-25
Value1092523424-25142112212
Percentage of AllocatedShareBasedCompensationExpense41.729.015.429.415.423.130.816.730.8208.373.747.731.622.214.325.0

us-gaap:PerformanceShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-25
Value9198966886831820531
Percentage of AllocatedShareBasedCompensationExpense37.561.361.552.946.246.261.566.746.2-66.715.840.952.655.642.912.5

us-gaap:RestrictedStockUnitsRSU



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-25
Value222221214254233
Percentage of AllocatedShareBasedCompensationExpense8.315.411.815.415.47.716.77.7-33.310.511.410.522.242.937.5

us-gaap:AmortizationOfDebtDiscountPremium



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-25
Value-6-1219-3-122211111
Percentage of AmortizationOfDebtDiscountPremium100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

csx:CurrentLiabilities



Period End2020-03-312019-09-302019-06-302019-03-312017-06-302017-03-312016-09-232016-06-242016-03-25
Value0.00.00.00.0-1000000.00.01000000.00.00.0
Percentage of AmortizationOfDebtDiscountPremium-0.0-0.00.00.0-100.00.0100.00.00.0

csx:LongTermLiabilities



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-25
Value-6-1219-3-122121011
Percentage of AmortizationOfDebtDiscountPremium100.0100.0100.0100.0100.0100.0100.050.0200.0100.00.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-25
Value110001010103254
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect



Period End2020-03-312019-03-31
Value1037330
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-03-31
Value1077316
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect103.995.8

srt:Subsidiaries



Period End2020-03-312019-03-31
Value-4513
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect-4.33.9

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-03-31
Value51
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect0.50.3

us-gaap:CommonStockDividendsPerShareCashPaid



Period End2020-03-312019-09-302019-06-302019-02-062019-02-052019-03-312018-12-312018-09-302018-06-302018-03-152018-02-122018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value0.260.240.240.240.220.240.219999999999999970.220.220.220.20.220.200000000000000070.20.20.180.180.180.180.179999999999999940.180.180.160.160.160.150.150.150.140.140.140.120.120.120.120.260.260.240.240.240.220.220.220.22
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value2887894651131504454-3394495359147858037449276208487-18219513746
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-24
Value-14-7-8-8-7-11-10-10-10-10-10-10-11-12-12
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2-2-2-1-2-2000
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-24
Value434243434345444344434343423940
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-24
Value100112212122233
Percentage of DefinedBenefitPlanInterestCost100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-24
Value202625262623232323232323232930
Percentage of DefinedBenefitPlanInterestCost2000.00.00.02600.02600.01150.01150.02300.01150.02300.01150.01150.01150.0966.71000.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-09-232016-06-24
Value0.00.00.01000000.00.01000000.00.01000000.00.01000000.00.01000000.00.01000000.0
Percentage of DefinedBenefitPlanServiceCost0.00.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-24
Value1078888879889111212
Percentage of DefinedBenefitPlanServiceCost0.00.00.0800.00.0800.00.0700.00.0800.00.0900.00.00.01200.0

us-gaap:Depreciation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-252010-03-26
Value344344338337330345334329323337331327320321319313312302299295290291287283277276270268263257251246243232230228
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value201189193195186190194
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value201189193195186190194
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-252010-03-26
Value9267283693271213333-41435422321310344539
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:FuelCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-252010-03-26
Value192216223234233253268270255243205198218174172150201223263270361393416446407397444397410444412431402279304283
Percentage of FuelCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-30
Value18226537273253373213122470119061313019
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

us-gaap:IncomeLossFromSubsidiariesBeforeTax

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value8558228839268749279539427584304472612
Percentage of IncomeLossFromSubsidiariesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-855-822-883-926-874-927-953-942-758-4304-472-612
Percentage of IncomeLossFromSubsidiariesBeforeTax-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0

us-gaap:IncreaseDecreaseInAccountsPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value14-54113-3574-36129-5364-6196-859194-5050-8271-9224-1970-80304869-17-26
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value27-84-22556-5150-350-8-257330-2-9-57-23-25-82-1935614464222-7524
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedTaxesPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-01
Value227-11225-61150-12343-151127-160226-208162-52-3259-17232-52130-6828-451591273040
Percentage of IncreaseDecreaseInAccruedTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-01
Value2016-43-19-22-31-56-331946-3521-33-33130239151-21-131941385235
Percentage of IncreaseDecreaseInOtherCurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-01
Value-1401969-12-172511750-165398932-117-5091-10255-2856-201941994-173-88-151-181
Percentage of IncreaseDecreaseInOtherCurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseNet



Period End2020-03-312019-03-31
Value-187-178
Percentage of InterestIncomeExpenseNet100.0100.0

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-03-31
Value-10-11
Percentage of InterestIncomeExpenseNet5.36.2

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-03-31
Value3949
Percentage of InterestIncomeExpenseNet-20.9-27.5

us-gaap:LaborAndRelatedExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-252010-03-26
Value606658638648672678695669696665717743789762749796799787825879909845809814791777767754744770765764765731721729
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-1-2-20-10212122
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-9-9-10-9-10-11-11-10-11-10-10-10
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent900.0450.0500.00.01000.00.0-550.0-1000.0-550.0-1000.0-500.0-500.0

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-7-430-3-2-117-1-21
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

csx:AccumulatedOtherAdjustmentstoParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-06-242016-03-252015-09-25
Value-700-3-2-6-1-211121-10-10
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent100.0-0.00.0100.0100.05.1100.0100.0100.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-06-242016-03-252015-09-25
Value0-43000-111000620860000
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent-0.0100.00.0-0.0-0.094.9-0.0-0.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-03-272014-12-262014-09-262014-06-272014-03-282013-03-29
Value3-27742-8774-99-2-1839151617
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

csx:AccumulatedOtherAdjustmentstoParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-09-25
Value-9220-3-7-2-311122-121-1-1
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-300.0-7.428.60.0-150.08.0-28.6-75.0-1.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-29
Value12-29545-8097-100646637888-23121110-1781010918
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent400.0107.471.4100.0250.092.0128.6175.0101.00.00.00.00.00.00.00.00.00.00.0-500.097.3111.166.756.2105.9

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-25
Value374274-997586561097-2011
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-03-272014-12-262014-09-262014-06-272014-03-282013-03-29
Value1-9222-252318-10656710
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

csx:AccumulatedOtherAdjustmentstoParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-09-25
Value-10101-100-100100200
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1-100.0-0.050.00.050.04.00.00.0-100.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-29
Value2-9121-24232213364545-14778-10556610
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1200.0100.050.0100.050.096.0100.0100.0200.00.00.00.00.00.00.00.00.00.00.0100.099.1100.0100.085.7100.0

us-gaap:OtherCostAndExpenseOperating



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-26
Value454436415455478542474469482540516490567507519550570580559627624610
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingActivitiesCashFlowStatement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-01
Value0367-7-14-82-216-42-172-202-29-25-18392633-2010-9-57-56-1
Percentage of OtherOperatingActivitiesCashFlowStatement0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value20-12-351421900834-30-16-2514-3151011-634215-16-418-8-14-18
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-1-11-941300100
Percentage of PaymentsForProceedsFromOtherInvestingActivities-5.091.725.728.650.015.80.00.012.50.0-0.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value323-3951-78750-21120-34-25
Percentage of PaymentsForProceedsFromOtherInvestingActivities15.0-191.7111.435.750.0-4142.10.00.01500.0-100.083.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value18-241350803-5021-1133017
Percentage of PaymentsForProceedsFromOtherInvestingActivities90.0200.0-37.135.70.04226.30.00.0-1412.588.2-56.7

us-gaap:PaymentsOfDividendsCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-06-282013-03-29
Value201186189193195181186190194178180184166169171173174176178158159159160151153143
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value201186189193195181186190194178180
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value250250250250250250250250250150150
Percentage of PaymentsOfDividendsCommonStock124.4134.4132.3129.5128.2138.1134.4131.6128.984.383.3

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-250-250-250-250-250-250-250-250-250-150-150
Percentage of PaymentsOfDividendsCommonStock-124.4-134.4-132.3-129.5-128.2-138.1-134.4-131.6-128.9-84.3-83.3

us-gaap:PaymentsToAcquireShortTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-01
Value4265838286148131255347701371004707515025235569395670105263810195165290538
Percentage of PaymentsToAcquireShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-30
Value424583828614813125534135100
Percentage of PaymentsToAcquireShortTermInvestments99.5100.0100.0100.0100.0100.0100.098.5100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-30
Value200000020
Percentage of PaymentsToAcquireShortTermInvestments0.50.00.00.00.00.00.01.50.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-03-292012-03-302011-04-012010-03-26
Value-7-11-111018-7-1-10-411-7-6-64-44-270364-131-30-25713-137
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-7-10-101319-7-5-13-40-2-6
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.090.990.9130.0105.6100.0500.0130.097.6-200.085.7

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0-1-2-2-1-411-409
Percentage of ProceedsFromPaymentsForOtherFinancingActivities-0.09.118.2-20.0-5.657.1-100.0-10.09.80.0-128.6

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value001-1043233-10
Percentage of ProceedsFromPaymentsForOtherFinancingActivities-0.0-0.0-9.1-10.00.0-57.1-300.0-20.0-7.3300.0142.9

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232015-12-252015-09-252014-12-262014-09-26
Value353672984862116895259223133101-1520
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value35367295516211689525922
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.096.9106.2100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0003-3000000
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment0.00.00.03.1-6.20.00.00.00.00.00.0

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-11-7-9-9-6-5-10-9-8
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

csx:AccumulatedOtherAdjustmentstoParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-09-25
Value3-2-3-30211200-20-1-301
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent-27.328.633.333.3-0.0-40.0-10.0-11.1-25.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-09-25
Value-14-5-6-6-6-7-11-10-10-23-9-13-11-13-12-13-19
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent127.371.466.766.7100.0140.0110.0111.1125.00.00.00.00.00.00.00.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate

us-gaap:EmployeeStockOption



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.0120.00.0140.0120.0130.00.0120.0130.0150.00.00.0150.015
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate100.00.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

csx:PerformanceUnits



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.2450.0-0.000299999999999966960.27630.2790.00050000000000000040.2915
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate100.00.0100.0100.0100.0100.0100.0

us-gaap:EmployeeStockOption



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.260.00.2570.2540.2580.00.2550.2580.270.00.00.270.271
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate106.10.00.0-84666.793.40.091.451600.092.60.00.00.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

csx:PerformanceUnits



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.0140.00.00.0250.0270.00.023
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.00.00.0100.0100.00.0100.0

us-gaap:EmployeeStockOption



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.014-0.00100000000000000090.0140.0240.0260.00.0280.0280.0260.00.00.0210.022
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.00.00.00.0104.00.0103.70.0113.00.00.00.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:EmployeeStockOption



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value18.87-0.1199999999999974415.4420.5117.450.020.5217.6214.620.0099999999999997870.012.2712.83
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0

us-gaap:PlanName

csx:LongtermIncentivePlan



Period End2020-02-182019-02-062019-02-28
Value18.8817.4517.45
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.0

us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod

us-gaap:EmployeeStock, csx:EmployeeStockPurchasePlan



Period End2020-03-312019-06-302019-03-31
Value122000.00.0105000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod100.00.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value79.4866.3578.5868.0974.8465.4454.070.047.849.61
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-02-282018-02-222018-03-312018-02-222017-12-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-27
Value9916111226151632153420961010109944444555
Percentage of StockRepurchasedAndRetiredDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value8161111141614
Percentage of StockRepurchasedAndRetiredDuringPeriodShares99.0100.6102.496.295.6102.499.8

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value57711118607961006974836
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value9161112151615
Percentage of StockRepurchasedAndRetiredDuringPeriodValue1.61.41.31.51.51.61.8

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value5681095849784991958821
Percentage of StockRepurchasedAndRetiredDuringPeriodValue98.498.698.798.598.598.498.2

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-09-252015-06-262015-03-272014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-25
Value1223443442101111000111222667119
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range

csx:CasualtyAndCatastrophicPropertyDeductible

srt:Maximum



Period End2020-03-31
Value100
Percentage of CasualtyAndCatastrophicPropertyDeductible100.0

srt:Minimum



Period End2020-03-31
Value50
Percentage of CasualtyAndCatastrophicPropertyDeductible50.0

us-gaap:Range

csx:CasualtyAndNonCatastrophicPropertyDeductible

srt:Maximum



Period End2020-03-31
Value75
Percentage of CasualtyAndNonCatastrophicPropertyDeductible100.0

srt:Minimum



Period End2020-03-31
Value25
Percentage of CasualtyAndNonCatastrophicPropertyDeductible33.3

us-gaap:ProductOrService

us-gaap:AccountsReceivableGross

csx:FreightReceivables



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value802790861884891846887844855810
Percentage of AccountsReceivableGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:NonFreightReceivables



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value235226269256241190230218218186
Percentage of AccountsReceivableGross29.328.631.229.027.022.525.925.825.523.0

us-gaap:AccountsReceivableNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value10089861101111111061010109010361045970
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

csx:FreightReceivables



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value782769841864874828870827837793
Percentage of AccountsReceivableNet77.678.076.477.879.082.079.879.880.181.8

csx:NonFreightReceivables



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value226217260247232182220209208177
Percentage of AccountsReceivableNet22.422.023.622.221.018.020.220.219.918.2

us-gaap:AdditionalPaidInCapitalCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value366346314290267249129127215217227210170138125116112113120118100928070656150443628201156000080
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value366346249217
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0

us-gaap:ProductOrService

us-gaap:AllowanceForDoubtfulAccountsReceivable

csx:FreightReceivables



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value20212020171817171817
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:NonFreightReceivables



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value999998109109
Percentage of AllowanceForDoubtfulAccountsReceivable45.042.945.045.052.944.458.852.955.652.9

us-gaap:StatementEquityComponents

us-gaap:AociTaxAttributableToParent

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value183184175177179180156158160162
Percentage of AociTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5731100111895790334070517095
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue

us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-26
Value4879961037878822253615821018113477287417152262375810425680257292
Percentage of AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue

us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value52535451524849464240
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue

us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value31252627242625272526
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue

us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252014-12-26
Value9109881417161781076423122742100
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5791084112696490634170617195
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndCapitalLeaseObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012010-12-31
Value167321623816737157671576614757137721378813787118091180711825112941129310519105371053610703101061012597419742961793099346955590519375941898329063908991259241865486808664
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:DebtInstrumentFairValue

us-gaap:FairValueInputsLevel2, us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282012-12-28
Value1673216238167371576715766147571377213788137871180911807118251129411293105191053710536107031010610125974197429617930993469555905193759832
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282012-12-28
Value187781850318923175361679114914141731406914487132201308213168120551209612235121741149611340107701078811379110421071510563104111035498841041711562
Percentage of DebtInstrumentFairValue112.2113.9113.1111.2106.5101.1102.9102.0105.1111.9110.8111.4106.7107.1116.3115.5109.1106.0106.6106.5116.8113.3111.4113.5111.4108.4109.2111.1117.6

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312016-12-302015-12-252014-12-26
Value699169616882679166906418959691798717
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value-145-152-134-130
Percentage of DeferredIncomeTaxLiabilitiesNet-2.1-2.2-2.0-2.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value685968276755669066016342
Percentage of DeferredIncomeTaxLiabilitiesNet98.198.198.298.598.798.8

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value277286277222223206
Percentage of DeferredIncomeTaxLiabilitiesNet4.04.14.03.33.33.2

us-gaap:ConsolidatedEntities

us-gaap:DueFromAffiliateCurrent

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value827105410201226
Percentage of DueFromAffiliateCurrent100.0100.0100.0100.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value767474056918616654985214525643603517
Percentage of DueFromAffiliateCurrent927.9702.60.00.00.0511.20.00.0286.9

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-8501-8459-7792-7087-6520-6234-6216-5365-4743
Percentage of DueFromAffiliateCurrent-1027.9-802.60.00.00.0-611.20.00.0-386.9

us-gaap:DueToAffiliateCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value00000000000000000000000000000000000005310
Percentage of DueToAffiliateCurrent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value9835955269734792
Percentage of DueToAffiliateCurrent0.00.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value326574385411437633397441552
Percentage of DueToAffiliateCurrent0.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-10161-10126-9344-8565-7917-7606-6736-5977-5344
Percentage of DueToAffiliateCurrent0.00.00.00.00.00.00.00.00.0

us-gaap:EmployeeRelatedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value345489486412406550517486443602601506445545450464398490447480410613507490404587511452376468416434392541474430336520383
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value30384152
Percentage of EmployeeRelatedLiabilitiesCurrent8.77.87.58.6

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value302386411342348440434381494
Percentage of EmployeeRelatedLiabilitiesCurrent87.578.984.683.085.780.083.978.482.1

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value136539352569436756
Percentage of EmployeeRelatedLiabilitiesCurrent3.813.38.08.56.212.58.313.89.3

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:InvestmentsFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-302016-09-232015-12-252014-12-262013-06-282012-12-28
Value5791084112696490634170617195189554500226915442582728
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:InvestmentType

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:CashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4869891029869813250610750
Percentage of InvestmentsFairValueDisclosure83.991.291.490.189.773.386.443.90.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:CorporateBondSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-302016-09-232015-12-252014-12-262013-06-282012-12-28
Value5659626159565657616060636273141131122
Percentage of InvestmentsFairValueDisclosure9.75.45.56.36.516.47.933.364.231.710.812.627.48.031.922.516.8

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-302016-09-232015-12-252014-12-26
Value373635343435403934292922143251
Percentage of InvestmentsFairValueDisclosure6.43.33.13.53.810.35.722.835.815.35.24.46.23.511.5

us-gaap:LongTermDebtAndCapitalLeaseObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value164771599315992155221574814739137541376913768117901178811806109631096298889905105161068310088101079513951493878410902190228787881188469052825785818623873481608186763780517895
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

csx:LongTermLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-28
Value164771599315992155221574814739137541376913768117901178811806109631096298889905105161051510088101079513951493878410902190228787881188469052
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.098.4100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value16020155341402911056
Percentage of LongTermDebtAndCapitalLeaseObligations97.297.195.293.8

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value457459460480708710711730733
Percentage of LongTermDebtAndCapitalLeaseObligations2.82.92.93.14.54.85.25.36.2

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.00.00.00.00.00.00.01000000.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value255245745245181818191919191933133163163220201818228228230899325533264564572780806508502507494494503613113
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

csx:CurrentLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-28
Value255245745245181818191919191933133163163220201818228228230899325533264564572780
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value10000
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent3.90.00.00.0

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2452452452451818181819
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent96.1100.032.9100.0100.0100.0100.094.7100.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.00.00.00.00.00.01000000.00.0
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent0.00.00.00.00.00.00.05.30.0

us-gaap:LossContingencyAccrualAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262010-12-312009-12-252008-12-262007-12-28
Value309305305309319324341346364374375363366374374379385400416426427418678737879871
Percentage of LossContingencyAccrualAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingenciesByNatureOfContingency

csx:OccupationalCasualty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-28
Value625859585456545460605960585999111217171718182123232736
Percentage of LossContingencyAccrualAtCarryingValue20.119.019.318.816.917.315.815.616.516.015.716.515.815.82.42.42.93.04.14.04.04.30.00.00.00.00.00.0

csx:OtherReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-12-302010-12-31
Value434443434445485453566253475048494749555460596264657166646459
Percentage of LossContingencyAccrualAtCarryingValue13.914.414.113.913.813.914.115.614.615.016.514.612.813.412.812.912.212.213.212.714.114.10.00.00.00.00.00.00.08.7

csx:PersonalInjuryCasualty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-28
Value127129125130141143150147162168165163168170192191200204203205200191198199199207201233
Percentage of LossContingencyAccrualAtCarryingValue41.142.341.042.144.244.144.042.544.544.944.044.945.945.551.350.451.951.048.848.146.845.70.00.00.00.00.00.0

csx:TotalCasualty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-12-302010-12-31
Value189187184188195199204201222228224223226229247246258269273277273265263269272280279325372375
Percentage of LossContingencyAccrualAtCarryingValue61.261.360.360.861.161.459.858.161.061.059.761.461.761.266.064.967.067.265.665.063.963.40.00.00.00.00.00.00.055.3

us-gaap:EnvironmentalIssue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-12-302010-12-31
Value7774787880808991899089879395798480828895949410710797100888883107
Percentage of LossContingencyAccrualAtCarryingValue24.924.325.625.225.124.726.126.324.524.123.724.025.425.421.122.220.820.521.222.322.022.50.00.00.00.00.00.00.015.8

us-gaap:LossContingencyAccrualCarryingValueCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272011-04-012010-12-312009-12-25
Value99100110110112113110114106108122115114115124133130131146146141142151151149151174176190
Percentage of LossContingencyAccrualCarryingValueCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value8687959598999710195
Percentage of LossContingencyAccrualCarryingValueCurrent86.987.086.486.487.587.688.288.688.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value131315151414131313
Percentage of LossContingencyAccrualCarryingValueCurrent13.113.013.613.612.512.411.811.412.0

us-gaap:LossContingenciesByNatureOfContingency

csx:OccupationalCasualty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value6699101077764477443333333333451010
Percentage of LossContingencyAccrualCarryingValueCurrent6.16.08.28.28.98.86.46.16.65.63.33.56.16.13.23.02.32.32.12.12.12.12.02.02.02.00.00.05.75.7

csx:OtherReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value202122222324242826283023192018191920222217181616172018192426
Percentage of LossContingencyAccrualCarryingValueCurrent20.221.020.020.020.521.221.824.624.525.924.620.016.717.414.514.314.615.315.115.112.112.710.610.611.413.20.00.013.814.8

csx:PersonalInjuryCasualty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value424247474140424242434545464657575757585868686363605979757878
Percentage of LossContingencyAccrualCarryingValueCurrent42.442.042.742.736.635.438.236.839.639.836.939.140.440.046.042.943.843.539.739.748.247.941.741.740.339.10.00.044.844.3

csx:TotalCasualty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value484856565150494949494949535365736869666676767676737290889797
Percentage of LossContingencyAccrualCarryingValueCurrent48.548.050.950.945.544.244.543.046.245.440.242.646.546.152.454.952.352.745.245.253.953.550.350.349.047.70.00.055.755.1

us-gaap:EnvironmentalIssue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-28
Value31313232383937373131434342424141434258584848595959594133
Percentage of LossContingencyAccrualCarryingValueCurrent31.331.029.129.133.934.533.632.529.228.735.237.436.836.533.130.833.132.139.739.734.033.839.139.139.639.10.00.0

us-gaap:LossContingencyAccrualCarryingValueNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272011-04-012010-12-312009-12-25
Value210205195199207211231232258266253248252259250246255269270280286276281289285300491502547
Percentage of LossContingencyAccrualCarryingValueNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value174169161164172176191190222
Percentage of LossContingencyAccrualCarryingValueNoncurrent82.982.482.682.483.183.482.781.983.5

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value363634353535404244
Percentage of LossContingencyAccrualCarryingValueNoncurrent17.117.617.417.616.916.617.318.116.5

us-gaap:LossContingenciesByNatureOfContingency

csx:OccupationalCasualty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value56525049444647475354555651525589141414151518202023313130
Percentage of LossContingencyAccrualCarryingValueNoncurrent26.725.425.624.621.321.820.320.320.520.321.722.620.220.12.02.03.13.35.25.04.95.45.36.27.06.70.00.06.36.0

csx:OtherReserves



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value23232121212124262728323028303030282933324341464848514845110110
Percentage of LossContingencyAccrualCarryingValueNoncurrent11.011.210.810.610.110.010.411.210.510.512.612.111.111.612.012.211.010.812.211.415.014.916.416.616.817.00.00.022.421.9

csx:PersonalInjuryCasualty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value85877883100103108105120125120118122124135134143147145147132123135136139148122158178176
Percentage of LossContingencyAccrualCarryingValueNoncurrent40.542.440.041.748.348.846.845.346.547.047.447.648.447.954.054.556.154.653.752.546.244.648.047.148.849.30.00.036.335.1

csx:TotalCasualty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value141139128132144149155152173179175174173176182173190200207211197189187193199208189237274278
Percentage of LossContingencyAccrualCarryingValueNoncurrent67.167.865.666.369.670.667.165.567.167.369.270.268.768.072.870.374.574.376.775.468.968.566.566.869.869.30.00.055.855.4

us-gaap:EnvironmentalIssue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-28
Value46434646424152545859464451533843374030374646484838414755
Percentage of LossContingencyAccrualCarryingValueNoncurrent21.921.023.623.120.319.422.523.322.522.218.217.720.220.515.217.514.514.911.113.216.116.717.116.613.313.70.00.0

us-gaap:Range, us-gaap:LitigationStatus

us-gaap:LossContingencyEstimateOfPossibleLoss

srt:Maximum, us-gaap:PendingLitigation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value38292855102120118117
Percentage of LossContingencyEstimateOfPossibleLoss100.0100.0100.0100.0100.0100.0100.0100.0

srt:Minimum, us-gaap:PendingLitigation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value11134322
Percentage of LossContingencyEstimateOfPossibleLoss2.63.43.65.53.92.51.71.7

us-gaap:MaterialsSuppliesAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012010-12-31
Value257261235222241263283326369372392428415407397399370350309295291273276275259252267264283274264256251240236251218
Percentage of MaterialsSuppliesAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value257261235222241263283326372
Percentage of MaterialsSuppliesAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4894934945015020
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.00.0

us-gaap:ConsolidatedEntities

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value473481481486487
Percentage of OperatingLeaseLiabilityNoncurrent96.797.697.497.097.0

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value1612131515
Percentage of OperatingLeaseLiabilityNoncurrent3.32.42.63.03.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-252008-12-262007-12-28
Value1188811863118791229012445125801373514023143911472110902116011166911694116701162511606116681166011577113381117611142109041064510504986896629348900290318895850484688268894187568700876879858633
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value11871118481256314705
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.999.999.999.9

srt:Subsidiaries



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value315253097330459298442923828669279612730626221
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest265.2261.1256.4242.8234.9227.9203.6194.7178.1

us-gaap:ConsolidationItems

srt:ConsolidationEliminations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-31508-30958-30444-29830-29221-28652-27945-27292-26205
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-265.0-261.0-256.3-242.7-234.8-227.8-203.5-194.6-178.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-252008-12-262007-12-28
Value-672-675-648-655-659-661-574-581-585-486-640-665-666-523-936-875-771-809-741-325
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-5.7-5.7-5.5-5.3-5.3-5.3-4.2-4.1-4.1-3.3-5.5-5.7-6.0-5.0-10.4-10.3-8.9-9.2-9.3-3.8

us-gaap:CommonStockIncludingAdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-252008-12-26
Value11311119109610881076106797398610901107106610791084107010481055370473391
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest9.59.49.28.98.68.57.17.07.67.59.19.29.710.211.612.54.35.44.9

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-252008-12-262007-12-28
Value1715151417171614131615162421141314142021
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.30.2

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-252008-12-262007-12-28
Value114121140411416118431201112157133201360413873140841125311238107349936887682759087909083158492
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest96.096.196.196.496.596.697.097.096.495.796.296.396.094.698.697.7104.4103.7104.198.4

Line plots across dimensions of each concept

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService


us-gaap:OperatingCostsAndExpenses us-gaap:ConsolidatedEntities


us-gaap:OperatingIncomeLoss us-gaap:ConsolidatedEntities


us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidatedEntities


us-gaap:NonoperatingIncomeExpense us-gaap:ConsolidatedEntities


us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidatedEntities


us-gaap:ComprehensiveIncomeNetOfTax us-gaap:ConsolidatedEntities


us-gaap:NetIncomeLoss us-gaap:ConsolidatedEntities


us-gaap:Assets us-gaap:ConsolidatedEntities


us-gaap:Liabilities us-gaap:ConsolidatedEntities


us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:AssetsCurrent us-gaap:ConsolidatedEntities


us-gaap:AccountsReceivableNetCurrent us-gaap:ConsolidatedEntities


us-gaap:OtherAssetsCurrent us-gaap:ConsolidatedEntities


us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization


us-gaap:OtherAssetsNoncurrent us-gaap:ConsolidatedEntities


us-gaap:LiabilitiesCurrent us-gaap:ConsolidatedEntities


us-gaap:AccountsPayableCurrent us-gaap:ConsolidatedEntities


us-gaap:TaxesPayableCurrent us-gaap:ConsolidatedEntities


us-gaap:OtherLiabilitiesCurrent us-gaap:ConsolidatedEntities


us-gaap:OtherLiabilitiesNoncurrent us-gaap:ConsolidatedEntities


us-gaap:StockholdersEquity us-gaap:StatementEquityComponents


us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities


us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities


us-gaap:NetCashProvidedByUsedInOperatingActivities us-gaap:ConsolidatedEntities


us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities


us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities


us-gaap:NetCashProvidedByUsedInOperatingActivities us-gaap:ConsolidatedEntities


us-gaap:NetIncomeLoss us-gaap:ConsolidatedEntities


us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidatedEntities


us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities