CNC


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesAuthorized

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:Revenues
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:InterestExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:NetIncomeLoss

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:ShortTermInvestments

us-gaap:OtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:LongTermInvestments

us-gaap:Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:MinorityInterest

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquireInvestments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:ShareRepurchaseProgram

us-gaap:RepaymentsOfLongTermDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:StatementScenario, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:ShareBasedCompensation

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

cnc:AmountsrecordedasanadjustmenttopremiumrevenuesrelatedtominimumHBRandreturnofpremiumprograms

cnc:HealthInsurerFeeExpense

cnc:PremiumTaxExpense

cnc:PremiumTaxRevenue

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AssetImpairmentCharges
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionsProFormaRevenue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostsAndExpenses

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationAndAmortization

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:GainLossOnSaleOfBusiness

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:IncomeLossFromContinuingOperations

us-gaap:IncomeTaxesPaidNet

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInHealthCareInsuranceLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInPremiumsReceivable

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestPaidNet

us-gaap:InvestmentIncomeNonoperating

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseBusinessAcquisitions

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
us-gaap:StatementEquityComponents

us-gaap:OperatingIncomeLoss
us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherSignificantNoncashTransactionValueOfConsiderationGiven1

us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDebtExtinguishmentCosts

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PolicyholderBenefitsAndClaimsIncurredHealthCare

us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueAcquisitions
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
us-gaap:ShareRepurchaseProgram
us-gaap:TreasuryStockSharesAcquired
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

cnc:AffordableCareActCostSharingReductionReceivable

cnc:AffordableCareActCostSharingReductionsPayable

cnc:AffordableCareActMinimumMedicalLossRatio

cnc:AffordableCareActReinsurancePayable

cnc:AffordableCareActRiskAdjustmentReceivable

cnc:FinanceLeaseLiabilityAndOther

cnc:InvestmentsDebtSecuritiesEquityMethodInvestmentsandOtherAmortizedCost

cnc:InvestmentsDebtSecuritiesEquitySecuritiesandOtherFairValue

cnc:LifeInsuranceContractsAndEquityInvestmentsFairValue

cnc:ReturnofPremiumPayable

cnc:SeniorNotesTotal

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue
us-gaap:FairValueByAssetClass
us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueByAssetClass, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:DebtAndCapitalLeaseObligations
us-gaap:BusinessAcquisition, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:LongtermDebtType
us-gaap:StatementScenario, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentRepurchasedFaceAmount

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:SubsequentEventType

us-gaap:EquityMethodInvestments

us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:InterestRateDerivativesAtFairValueNet

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

us-gaap:LifeInsuranceCorporateOrBankOwnedAmount
us-gaap:CreditFacility
us-gaap:LineOfCredit

us-gaap:LoansPayable

us-gaap:OperatingLeaseLiability

us-gaap:OtherNotesPayable

us-gaap:OtherRestrictedAssetsNoncurrent

us-gaap:PremiumsAndOtherReceivablesNet

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount

us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments

us-gaap:RestrictedCashAndCashEquivalents
us-gaap:BusinessAcquisition, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:SeniorNotes
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:TreasuryStockShares
us-gaap:StatementEquityComponents

us-gaap:UnamortizedDebtIssuanceExpense

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██████▇▇▇▇▇▇▇▇▇▇0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.061000.061000.061000.059000.058000.058000.055000.055000.054000.054000.054000.054000.053000.053000.053000.052000.0NANANA
us-gaap:CommonStockSharesIssued █▆▆▆▆▆▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁59442141941941941720720718018017917817817817617617512612412412412461616158575755555454545352525252NANANA
us-gaap:CommonStockSharesOutstanding █▆▆▆▆▆▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁57941541341341341220520517617317217217217117017017012011911911811858575755545452525151515050504949NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock█▆▆▆▆▆▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁59442141941941941720720718018017917817817817617617512612412412412461616158575755555454545352525252NANANA
us-gaap:CommonStockSharesAuthorized ██████▃▃▃▃▃▃▃▃▃▃▃▃▁▁▁▁800800800800800800400400400400400400400400400400400400200200200200NA200100100100100100100100100100100100100100100NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 552NA419419419NA209199177NA176176175175174173125NA123122122NA605959NA565654NA535153NA525251NA505048
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 544NA413413412NA205195173NA172172172171170170125NA119119118NA585757NA545452NA515151NA505049NA494947
us-gaap:EarningsPerShareBasic ▃▄▃▆▆▄▃▇█▆▆▇▅▇▅▅▂▅▅▅▄▅▇▅▄▅▅▅▄▃▃▁▄▄▄▄▄▄▄▄▄0.080.50.231.21.260.590.091.531.951.331.191.470.811.530.850.99-0.140.930.780.740.530.911.410.850.570.970.90.720.440.170.07-0.680.470.60.580.570.480.520.460.460.51
us-gaap:EarningsPerShareDiluted ▃▄▃▆▆▄▃▇█▆▆▇▅▇▅▅▂▅▅▅▄▅▇▅▄▅▅▅▄▃▃▁▄▄▄▄▄▄▄▄▄0.080.490.231.181.240.570.091.51.911.31.161.440.791.490.830.97-0.140.90.760.720.510.881.360.820.560.930.870.70.420.170.07-0.680.450.570.550.540.460.50.440.450.49
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Revenues █▆▆▆▆▅▅▅▄▄▄▄▄▄▄▄▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁260251886318976183561844416559161821418113194128061189811954117241191110846108976953630258215506513147254351402334592931280327252645239624482110171215071302131512161180112110761068
 us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:IntersegmentElimination,cnc:SpecialtyServices█▇▇▇▇▇▆▆▆▆▆▆▆▃▃▂▃▂▂▁▁281426702675255624492470235023382231235923672412233315691525141114481339127411761075NANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cnc:ManagedCare█▆▆▅▆▅▅▄▄▄▃▃▃▃▃▃▂▁▁▁▁2493617926180871750917687158461542013283124741210511259113521112611140100651007463895714530149674636NANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:StatementBusinessSegments cnc:ManagedCare█▆▆▅▅▅▅▄▄▄▃▃▃▃▃▃▂▁▁▁▁2503617980181311754617722158701544613309124491209411248113411111511084100101012863555687527849934612NANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:StatementBusinessSegments cnc:SpecialtyServices█▇▇▇▇▇▆▇▁▁▁▁▁▂▂▅▁▁▁▃▁3903360735643403320631833112323674571265061360982783622345986155431715519NANANANANANANANANANANANANANANANANANANANA
us-gaap:SellingGeneralAndAdministrativeExpense █▅▅▅▅▅▆▃▄▃▂▂▃▂▂▂▁23841733161715741609155619341237131612601030106510911065940949722NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestExpense █▅▅▅▅▅▅▄▃▃▃▃▃▄▃▃▂▁▁▁▁▁▁▁▁18011399101999897806866656262755752331111111010987NA676NA444NA455NA433
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▂▄▃██▅▁▆▆▃▄▅▃▆▄▅▁▃▃▃▂▃▂▂▂1312601756626853572447451316832642121948031835722171801721281931049167NA806437NA-9-4734NA464437NA364132
us-gaap:IncomeTaxExpenseBenefit ▅▄▄▇▇▅▃▇▇▁▆▇▅█▇▇▃▅▅▄▄▅▃▃▃8558791701661168175175-55125169872231711881710587846389264434NA312515NA-9-812NA181614NA131712
us-gaap:NetIncomeLoss ▂▄▃██▄▂▅▆▄▄▅▃▅▃▄▁▃▃▃▂▃▂▂▂▂▂▂▂▂▁▁▂▂▂▂▂▂▂▂▂462099549552224119300340230205254139261145169-171119388631078248325349392393-34233028282325222224
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets █▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁6643140994342523436833569309013115728743251702185522000218402136220197196341949618652733973227022669658385446468244463529313930452887274126902449228321902037201020031943NANANA
us-gaap:Liabilities █▆▄▅▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁4273928302218162209821925198782039618035175821497915327153121514014143137621380913199501551134927470439473664307629032285195319221900178717331501130412531133114011721146NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁6643140994342523436833569309013115728743251702185522000218402136220197196341949618652733973227022669658385446468244463529313930452887274126902449228321902037201020031943NANANA
us-gaap:StockholdersEquity █▅▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁235491255112311121541154010917106531061075036850664063786070589557105529529721572051194018371744163214761412123411791118985953963951979935902868829793NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent █▇▅▅▅▄▅▄▄▃▄▄▄▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁24696203231345713596136161199813088123771097687039660964894088365775578537551360535963838359030342767232422811800136813421375137313761073920940766774743656NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▆█▄▅▅▄▅▅▄▃▃▃▄▃▃▂▃▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁93081212362156875634553426847670756684072428144254839393029822710343617601665196716661546152311991218974741688730843796421432573451474492434NA265350
us-gaap:ShortTermInvestments █▅▅▅▄▅▄▄▃▄▄▄▅▃▃▃▂▂▂▂▂▂▂▂▁▁▂▂▂▂▂▂▂▂▁▁▁▁138686380476569772259460250753159558672550540644326917616214015117716612799102122131146139139152126130106785221NANANA
us-gaap:OtherAssetsCurrent █▄▃▃▃▃▃▃▄▃▃▃▃▃▃▄▄▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁269810908327627557841000100111536878297367238329221212131739048848352832431931332021714816417812712398827868696764NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentNet █▇▇▆▆▆▅▄▄▄▃▃▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁24392121199318781800170615841327125011041003912841797725626580518488462450445424423412395390388382377381379352349345340334326NANANA
us-gaap:LongTermInvestments █▆▆▆▆▅▅▅▅▄▄▄▄▄▄▄▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁105217717791576327186686162725746553553124927481646364545456842303973192719921541152712801108996840791816769748614559630605506530518556595NANANA
us-gaap:Goodwill █▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁174176863687271266981701568035346529547494712471247124712473047074442842849811786754753642657348347344256256256256281281281281278278NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill █▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁88982063208621632208223924231501151913981428146615041545156616091646155161148131120127818548505219202122262728302729NANANA
us-gaap:OtherAssetsNoncurrent █▇▇▇▇▃▃▃▃▃▂▂▁▁▂▃▂▂▁▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁144612491274134311965274375034554541321491219515333431717713012111480140107805912410765646153585857383630NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LiabilitiesCurrent █▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▃▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁2165112932132801265313143119711274198621089093329709896692028623902388147871362935633458334329002634211720211559138613201307119712801034888837730749817765NANANA
us-gaap:LongTermDebtCurrent ▂▂▂▂▁▁▁▁▁▁▁▁▁▁██▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1298866874038444444448458454555555663333333333332NANANA
us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent █▄▄▄▅▄▅▄▅▄▅▄▄▄▄▄▄▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁85314164401040324641405145503803496241654804423842753763318732183228976103510041002751926670614375270216180191162142158216173152214185NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LongTermDebtNoncurrent █▇▄▄▄▄▄▃▃▃▃▃▃▃▂▂▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁17150136386975704767756648637962755172469547174716464346513744364942761216127611391123888949884810665517548532535391405347348348336302327NANANA
us-gaap:MinorityInterest ██▇▇▇▇▇▇▆▂▂▂▂▂▂▂▂▂▁▁▁▁▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▂10710894949496978777141314141414111211200-189995400-6-3001123NANANA
us-gaap:OtherLiabilitiesNoncurrent █▄▄▅▅▃▃▄▄▃▃▄▃▂▃▃▃▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁393817321561239820071259127618981520952901163012958699951346105217027433023815880737060495360556161686754535353NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity █▅▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁235491255112311121541154010917106531061075036850664063786070589557105529529721572051194018371744163214761412123411791118985953963951979935902868829793NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest █▅▅▅▄▄▄▄▃▃▃▃▃▃▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁236561265912405122481163411013107501069775806864665363926084590957245540530921682053194018371743164114851422124311851122986953957947979936904870831797NANANA
 us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital█▄▄▄▄▄▄▄▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁192797647757175317491744973957355459243494310425842244190415441194084956909891870840811754739594578563461450458450443421411405396384NANANA
 us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents us-gaap:RetainedEarnings███▇▇▆▆▆▅▅▄▄▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁5030498447754680418536633422340331042748251823132059192016551510134113581247115410661003896813764731678629589566557553588564534505477453NANANA
us-gaap:CommonStockValue ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██████▇▇▇▇▇▇▇▇▇▇0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.061000.061000.061000.059000.058000.058000.055000.055000.054000.054000.054000.054000.053000.053000.053000.052000.0NANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▄▄▄▄▄▄▄▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁192797647757175317491744973957355459243494310425842244190415441194084956909891870840811754739594578563461450458450443421411405396384NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ███▇▇▆▆▆▅▅▄▄▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁5030498447754680418536633422340331042748251823132059192016551510134113581247115410661003896813764731678629589566557553588564534505477453NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▃██▇▅▂▁▁▂▃▄▄▃▂▅▅▄▃▃▃▃▃▃-513414511938-56-79-67-54-391-21-36464310-10-2-4-1-10NANA-2NANANANANANANANANANANANANANANA
us-gaap:TreasuryStockValue █▃▂▂▂▂▁▁▂▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁7552141801761741398581139244197194192179145143138147103101989874949189757070695958585750505050NANANA
us-gaap:MinorityInterest ██▇▇▇▇▇▇▆▂▂▂▂▂▂▂▂▂▁▁▁▁▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▂10710894949496978777141314141414111211200-189995400-6-3001123NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▁▃▅▇▁▄▁█▄▃▂▆▇▄▂▃▃▃▄▃▄▄▃▄-240-651-999171316-634548-526184645097-30612481596480-4201952016235045369441159252NANANA42NANANA-32NANANA93NANANA-38
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁█▇▇▇▆▃▇▆▇██▇▆▇▇▆█▇██████-3272-144-459-556-373-1022-2310-489-764-579-200-157-329-765-313-483-836-44-470-74-225-266-191-239-150NANANA-156NANANA-120NANANA-11NANANA-41
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂█▁▁▁▁▁▅▂▁▁▁▁▁▁▁▃▁▁▁▁▁▁▁▁8396704-10817858152823865513-79-4249-101191041772317-6210625236-757467130NANANA0NANANA12NANANA-24NANANA26
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▁▃▅▇▁▄▁█▄▃▂▆▇▄▂▃▃▃▄▃▄▄▃▄-240-651-999171316-634548-526184645097-30612481596480-4201952016235045369441159252NANANA42NANANA-32NANANA93NANANA-38
us-gaap:NetIncomeLoss ▂▄▃██▄▂▅▆▄▄▅▃▅▃▄▁▃▃▃▂▃▂▂▂▂▂▂▂▂▁▁▂▂▂▂▂▂▂▂▂462099549552224119300340230205254139261145169-171119388631078248325349392393-34233028282325222224
us-gaap:ProfitLoss ▂▄▂██▄▁▅▆▄▄▅▃▅▃▃▁▃▂▂▂▃▂▂▂462029649251924116299338223201252132263146168-16111948864104794832NA483922NA0-3822NA282822NA232424
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁█▇▇▇▆▃▇▆▇██▇▆▇▇▆█▇██████-3272-144-459-556-373-1022-2310-489-764-579-200-157-329-765-313-483-836-44-470-74-225-266-191-239-150NANANA-156NANANA-120NANANA-11NANANA-41
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▇▇▇▆▇▇▅▅█▅▅▄▃▄▄▂▂▂▂▁▁▂▁▁▁17720019416017618612714421812112098839511749454943312734262318NANANA10NANANA14NANANA15NANANA12
us-gaap:PaymentsToAcquireInvestments █▃▅▄▃▇█▄▄▆▂▄▃▅▃▄▁▁▃▁▂▂▂▂▁140050179470058011551316610765984426700594922572744212244564206307276263307167NANANA358NANANA255NANANA40NANANA146
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂█▁▁▁▁▁▅▂▁▁▁▁▁▁▁▃▁▁▁▁▁▁▁▁8396704-10817858152823865513-79-4249-101191041772317-6210625236-757467130NANANA0NANANA12NANANA-24NANANA26
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▂█▅▄▁▁▁▃▂▁▁▁▁▂▂▂▃▁▁▁▁▁▁▁▁254212265683945991018597334313120152303602505601990124519213790620555250500490240500645NANANA0NANANANANANANA127NANANA22
us-gaap:RepaymentsOfLongTermDebt ▂▇█▅▂▁▁▃▂▁▁▁▁▃▂▃▂▂▁▁▁▁▁▁▁1039551069404426927391221198014912293622025601819113317361388673431226253556171426519NANANA0NANANA0NANANA152NANANA97
us-gaap:PaymentsForRepurchaseOfCommonStock █▁▁▁▁▂▁▁▁▂▁▁▁▁▁▁▁▂▁▁▁▁▁▁▁558344235544494732133425224423423022NANANA0NANANA1NANANA0NANANA0
 us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:ShareRepurchaseProgram cnc:StockRepurchaseProgram500NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:RepaymentsOfLongTermDebt ▂▇█▅▂▁▁▃▂▁▁▁▁▃▂▃▂▂▁▁▁▁▁▁▁1039551069404426927391221198014912293622025601819113317361388673431226253556171426519NANANA0NANANA0NANANA152NANANA97
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType,us-gaap:SubsequentEventType cnc:A3.375SeniorNotesDue2030,us-gaap:SeniorNotes,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementScenario,us-gaap:DebtInstrument,us-gaap:LongtermDebtType,us-gaap:SubsequentEventType srt:ScenarioForecast,cnc:FourPointSevenFivePercentSeniorNotesDueonMayFifteenTwentyTwentyTwo,us-gaap:SeniorNotes,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementScenario,us-gaap:DebtInstrument,us-gaap:LongtermDebtType,us-gaap:SubsequentEventType srt:ScenarioForecast,cnc:SixPointOneTwoFivePercentSeniorNotesDueinTwentyTwentyFour,us-gaap:SeniorNotes,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.061000.061000.061000.059000.058000.058000.055000.055000.054000.054000.054000.054000.053000.053000.053000.052000.046000.0
Percentage of CommonStockValue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Par Or Stated Value Per Share

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5944214194194194172072071801801791781781781761761751261241241241246161615857575555545454535252525245
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value57941541341341341220520517617317217217217117017017012011911911811858575755545452525151515050504949
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value59442141941941941720720718018017917817817817617617512612412412412461616158575755555454545352525252454544
Percentage of CommonStockSharesOutstanding102.7101.6101.4101.4101.4101.3101.1101.1102.2104.0103.7103.7103.7103.6103.3103.3103.2105.4104.8104.8104.8104.9104.6105.9105.9106.1105.7105.6105.8105.8105.4105.4105.4105.4105.0105.0105.1105.10.00.00.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value800800800800800800400400400400400400400400400400400400200200200200200100100100100100100100100100100100100100100100
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value552419419419209199177176176175175174173125123122122605959565654535153525251505048
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value544413413412205195173172172172171170170125119119118585757545452515151505049494947
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.080.50.231.21.260.590.091.531.951.331.191.470.811.530.850.99-0.140.930.780.740.530.911.410.850.570.970.90.720.440.170.07-0.680.470.60.580.570.480.520.460.460.51
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.080.490.231.181.240.570.091.51.911.31.161.440.791.490.830.97-0.140.90.760.720.510.881.360.820.560.930.870.70.420.170.07-0.680.450.570.550.540.460.50.440.450.49
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

Income Loss From Continuing Operations Per Diluted Share

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value260251886318976183561844416559161821418113194128061189811954117241191110846108976953630258215506513147254351402334592931280327252645239624482110171215071302131512161180112110761068
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax107.7100.0104.2106.1109.5100.0105.4110.1105.1100.0104.2104.5100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-2914-2724-2719-2593-2484-2494-2376-2364-2256-2370-2378-2423-2344-1625-1580-1465-1482-1366-1297-1202-1099
Percentage of Revenues-11.2-14.4-14.3-14.1-13.5-15.1-14.7-16.7-17.1-18.5-20.0-20.3-20.0-13.6-14.6-13.4-21.3-21.7-22.3-21.8-21.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-12.1-14.4-14.9-15.0-14.8-15.1-15.5-18.4-18.0-18.5-20.8-21.2-20.0-13.6-14.6-13.4-21.3-21.7-22.3-21.8-21.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IntersegmentElimination, cnc:ManagedCare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1005444373524262625111111115655543427232624
Percentage of Revenues0.40.30.20.20.20.10.20.20.20.10.10.10.10.50.50.50.50.40.40.50.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.30.20.20.20.10.20.20.20.10.10.10.10.50.50.50.50.40.40.50.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination cnc:ManagedCare0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IntersegmentElimination, cnc:SpecialtyServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value281426702675255624492470235023382231235923672412233315691525141114481339127411761075
Percentage of Revenues10.814.214.113.913.314.914.516.516.918.419.920.219.913.214.112.920.821.221.921.421.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.614.214.714.814.514.915.318.217.818.420.721.119.913.214.112.920.821.221.921.421.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination cnc:SpecialtyServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cnc:ManagedCare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2493617926180871750917687158461542013283124741210511259113521112611140100651007463895714530149674636
Percentage of Revenues95.895.095.395.495.995.795.393.794.594.594.695.094.993.592.892.491.990.791.190.290.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax103.295.099.3101.2105.095.7100.4103.299.394.598.699.294.993.592.892.491.990.791.190.290.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cnc:ManagedCare0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cnc:SpecialtyServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value108993788984775771376289829763071301730252942239623618232046195418175391594
Percentage of Revenues4.25.04.74.64.14.34.76.322.624.025.425.325.120.121.87.629.431.031.29.831.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.55.04.94.94.54.35.07.023.724.026.426.425.120.121.87.629.431.031.29.831.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments cnc:SpecialtyServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementBusinessSegments

cnc:ManagedCare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2503617980181311754617722158701544613309124491209411248113411111511084100101012863555687527849934612
Percentage of Revenues96.295.395.595.696.195.895.593.994.494.494.594.994.893.192.392.991.490.290.790.789.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax103.695.399.5101.4105.395.8100.6103.499.194.498.599.194.893.192.392.991.490.290.790.789.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cnc:ManagedCare0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cnc:SpecialtyServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value3903360735643403320631833112323674571265061360982783622345986155431715519
Percentage of Revenues15.019.118.818.517.419.219.222.85.65.65.55.15.26.97.720.58.69.89.331.110.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.119.119.619.719.019.220.325.15.95.65.75.45.26.97.720.58.69.89.331.110.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cnc:SpecialtyServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Premiums Earned Net

General And Administrative Expense

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value23841733161715741609155619341237131612601030106510911065940949722
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.99.28.99.19.69.412.69.610.59.89.09.39.38.98.78.710.4

Interest Expense

us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value18011399101999897806866656262755752331111111010987676444455433
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.60.50.60.60.60.60.60.50.50.60.50.50.60.50.50.50.20.20.20.20.20.20.20.20.20.30.30.20.20.30.40.40.50.40.40.4

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1312601756626853572447451316832642121948031835722171801721281931049167806437-9-4734464437364132
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.51.41.03.84.12.20.23.74.11.32.93.71.94.02.93.30.03.43.13.12.54.12.42.32.02.92.41.4-0.4-2.22.03.63.43.13.23.93.1

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value8558791701661168175175-55125169872231711881710587846389264434312515-9-812181614131712
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.30.41.01.00.70.11.41.4-0.41.11.50.71.91.61.70.21.71.51.51.21.90.61.11.01.10.90.6-0.4-0.40.71.41.21.21.21.61.2

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value462099549552224119300340230205254139261145169-171119388631078248325349392393-34233028282325222224
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.21.10.52.93.11.50.12.32.71.81.82.21.22.21.31.6-0.21.81.61.61.22.31.91.21.01.81.81.40.90.40.2-1.71.42.02.22.22.02.22.02.12.2

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value66431409943425234368335693090131157287432517021855220002184021362201971963419496186527339732270226696583854464682444635293139304528872741269024492283219020372010200319431702
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

Liabilities

us-gaap:Liabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value42739283022181622098219251987820396180351758214979153271531215140141431376213809131995015511349274704394736643076290322851953192219001787173315011304125311331140117211461082
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 Assets64.369.063.764.365.364.365.562.769.968.569.770.170.970.070.170.870.868.369.870.270.367.667.365.765.364.862.263.165.865.264.461.357.157.255.656.758.559.063.6

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value66431409943425234368335693090131157287432517021855220002184021362201971963419496186527339732270226696583854464682444635293139304528872741269024492283219020372010200319431702
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

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value235491255112311121541154010917106531061075036850664063786070589557105529529721572051194018371744163214761412123411791118985953963951979935902868829793600
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.430.635.935.434.435.334.236.929.831.330.229.228.429.229.128.428.429.428.027.627.429.930.031.531.835.037.636.734.134.835.838.842.942.744.343.241.440.835.3

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value24696203231345713596136161199813088123771097687039660964894088365775578537551360535963838359030342767232422811800136813421375137313761073920940766774743656616
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 Assets37.249.639.339.640.638.842.043.143.639.843.944.244.041.439.540.340.549.149.154.753.652.050.849.651.351.043.644.147.650.151.243.840.342.937.638.537.133.836.2

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-06-302010-03-312009-12-312008-12-312007-12-31
Value93081212362156875634553426847670756684072428144254839393029822710343617601665196716661546152311991218974741688730843796421432573451474492434265350403379268
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.029.618.120.018.917.322.023.322.518.619.520.322.719.515.213.918.424.022.728.024.926.528.025.627.427.623.622.625.330.829.617.219.026.222.223.624.622.30.00.023.70.00.0

Short Term Investments

us-gaap:ShortTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value13868638047656977225946025075315955867255054064432691761621401511771661279910212213114613913915212613010678522139
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 Assets2.12.12.32.22.12.31.92.12.02.42.72.73.42.52.12.31.42.42.22.02.33.03.12.72.22.93.94.35.15.15.26.25.56.05.23.92.61.12.3

Other Assets Current

us-gaap:OtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value26981090832762755784100010011153687829736723832922121213173904884835283243193133202171481641781271239882786869676464
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 Assets4.12.72.42.22.22.53.23.54.63.13.83.43.44.14.76.27.15.36.76.97.95.55.96.77.26.24.75.46.24.64.64.03.63.63.43.43.33.33.8

Property Plant And Equipment Gross

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value24392121199318781800170615841327125011041003912841797725626580518488462450445424423412395390388382377381379352349345340334326230
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 Assets3.75.25.85.55.45.55.14.65.05.14.64.23.93.93.73.23.17.16.76.66.77.67.89.19.311.212.412.813.313.814.215.515.416.017.016.916.716.813.5

Long Term Investments

us-gaap:LongTermInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value105217717791576327186686162725746553553124927481646364545456842303973192719921541152712801108996840791816769748614559630605506530518556595525
Percentage of LongTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.818.823.122.221.422.220.120.022.024.322.422.121.722.523.321.721.326.327.221.922.821.920.321.318.922.426.025.325.922.420.825.826.523.126.025.827.830.730.9

Investments In Affiliates Subsidiaries Associates And Joint Ventures

Goodwill

us-gaap:Goodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312014-01-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value174176863687271266981701568035346529547494712471247124712473047074442842849811786754753642657309348347344256256256256281281281281278278224
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.216.720.120.720.822.721.818.621.021.721.421.622.123.324.124.123.811.511.611.511.712.913.813.714.80.09.911.111.38.99.39.510.512.412.913.814.013.914.313.2

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value8898206320862163220822392423150115191398142814661504154515661609164615516114813112012781854850521920212226272830272922
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.45.06.16.36.67.27.85.26.06.46.56.77.07.68.08.38.82.12.22.12.02.12.31.71.91.41.61.70.70.70.80.91.11.31.41.51.41.51.3

Finite Lived Intangible Assets Net

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value14461249127413431196527437503455454132149121951533343171771301211148014010780591241076564615358585738363036
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 Assets2.23.03.73.93.61.71.41.71.82.10.60.70.60.50.81.71.72.41.81.71.71.42.62.31.81.74.03.52.32.32.32.22.62.72.81.91.81.52.2

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2165112932132801265313143119711274198621089093329709896692028623902388147871362935633458334329002634211720211559138613201307119712801034888837730749817765715
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 Assets32.631.538.836.839.238.740.934.343.342.744.141.143.142.746.045.242.249.448.749.249.949.748.445.245.544.244.243.445.343.747.642.238.938.235.837.340.839.442.1

Long Term Debt Current

us-gaap:LongTermDebtCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value12988668740384444444484584545555556633333333333320
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.30.10.10.00.00.00.00.00.00.00.04.34.30.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.10.0

Accounts Payable And Accrued Liabilities Current

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value85314164401040324641405145503803496241654804423842753763318732183228976103510041002751926670614375270216180191162142158216173152214185132
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.810.211.711.713.813.114.613.219.719.121.819.420.018.616.216.517.313.314.114.315.012.917.014.313.810.68.67.16.27.06.05.86.99.98.57.610.79.57.8

Long Term Debt

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value17150136386975704767756648637962755172469547174716464346513744364942761216127611391123888949884810665517548532535391405347348348336302327307
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.833.320.420.520.221.520.521.820.521.521.421.621.723.019.118.722.916.617.416.216.815.217.418.918.218.916.518.018.519.514.616.615.215.917.116.715.116.918.0

Deferred Tax Liabilities Noncurrent

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value10710894949496978777141314141414111211200-189995400-6-300112318
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.30.30.30.30.30.30.30.30.10.10.10.10.10.10.10.10.10.00.00.0-0.00.10.20.20.30.20.10.00.0-0.3-0.1-0.00.00.10.10.10.21.1

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value39381732156123982007125912761898152095290116301295869995134610521702743302381588073706049536055616168675453535359
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 Assets5.94.24.67.06.04.14.16.66.04.44.17.56.14.35.16.95.62.33.74.73.62.71.51.61.61.71.61.82.12.02.32.53.03.12.72.72.72.73.5

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value235491255112311121541154010917106531061075036850664063786070589557105529529721572051194018371744163214761412123411791118985953963951979935902868829793600
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.430.635.935.434.435.334.236.929.831.330.229.228.429.229.128.428.429.428.027.627.429.930.031.531.835.037.636.734.134.835.838.842.942.744.343.241.440.835.3

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value236561265912405122481163411013107501069775806864665363926084590957245540530921682053194018371743164114851422124311851122986953957947979936904870831797619501415
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
Percentage of Assets35.630.936.235.634.735.634.537.230.131.430.229.328.529.329.228.428.529.528.027.627.429.930.131.732.035.237.836.934.234.835.638.742.942.844.443.341.541.036.40.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value-513414511938-56-79-67-54-391-21-36464310-10-2-4-1-1020-2-1-44565656756731
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.01.11.21.00.3-0.5-0.7-0.6-0.7-0.00.10.0-0.3-0.60.80.80.2-0.5-0.1-0.2-0.1-0.1-0.00.1-0.0-0.2-0.2-0.40.50.50.70.60.60.60.70.80.70.81.20.60.4
Percentage of Assets-0.00.30.40.30.1-0.2-0.3-0.2-0.2-0.00.00.0-0.1-0.20.20.20.1-0.1-0.0-0.1-0.0-0.0-0.00.0-0.0-0.1-0.1-0.10.20.20.20.20.30.30.30.40.30.30.40.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value192797647757175317491744973957355459243494310425842244190415441194084956909891870840811754739594578563461450458450443421411405396384281263239
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest81.560.461.061.564.467.668.868.860.663.464.866.669.470.972.674.476.944.144.345.947.448.249.550.852.047.848.850.246.847.347.947.545.345.145.646.647.748.245.552.657.6
Percentage of Assets29.018.722.121.922.324.123.725.618.219.919.619.519.820.721.221.121.913.012.412.713.014.414.916.116.616.818.418.516.016.417.018.419.419.320.220.219.819.816.60.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.061000.061000.061000.059000.058000.058000.055000.055000.054000.054000.054000.054000.053000.053000.053000.052000.046000.045000.045000.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value10710894949496978777141314141414111211200-189995400-6-30011231800
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.50.90.80.80.80.90.90.81.00.20.20.20.20.20.20.20.20.50.10.00.0-0.10.50.70.70.80.50.40.10.1-0.7-0.4-0.10.10.20.20.30.43.00.00.0
Percentage of Assets0.20.30.30.30.30.30.30.30.30.10.10.10.10.10.10.10.10.10.00.00.0-0.00.10.20.20.30.20.10.00.0-0.3-0.1-0.00.00.10.10.10.21.10.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value5030498447754680418536633422340331042748251823132059192016551510134113581247115410661003896813764731678629589566557553588564534505477453358275191
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest21.339.438.538.236.033.331.831.840.940.037.836.233.832.528.927.325.362.660.759.558.057.554.654.853.858.957.356.159.859.458.358.460.160.359.258.157.456.957.954.946.2
Percentage of Assets7.612.213.913.612.511.911.011.812.312.611.410.69.69.58.47.77.218.517.016.415.917.216.517.417.220.721.620.720.420.720.722.625.825.826.325.223.823.321.10.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value-755-214-180-176-174-139-85-81-139-244-197-194-192-179-145-143-138-147-103-101-98-98-74-94-91-89-75-70-70-69-59-58-58-57-50-50-50-50-47-40-17
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-3.2-1.7-1.5-1.4-1.5-1.3-0.8-0.8-1.8-3.6-3.0-3.0-3.2-3.0-2.5-2.6-2.6-6.8-5.0-5.2-5.3-5.6-4.6-6.4-6.4-7.2-6.4-6.3-7.1-7.3-6.2-6.2-6.0-6.1-5.6-5.8-6.1-6.3-7.6-8.2-4.2
Percentage of Assets-1.1-0.5-0.5-0.5-0.5-0.4-0.3-0.3-0.6-1.1-0.9-0.9-0.9-0.9-0.7-0.7-0.7-2.0-1.4-1.4-1.5-1.7-1.4-2.0-2.1-2.5-2.4-2.3-2.4-2.5-2.2-2.4-2.6-2.6-2.5-2.5-2.5-2.6-2.80.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.061000.061000.061000.059000.058000.058000.055000.055000.054000.054000.054000.054000.053000.053000.053000.052000.046000.0
Percentage of CommonStockValue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value192797647757175317491744973957355459243494310425842244190415441194084956909891870840811754739594578563461450458450443421411405396384281
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets29.018.722.121.922.324.123.725.618.219.919.619.519.820.721.221.121.913.012.412.713.014.414.916.116.616.818.418.516.016.417.018.419.419.320.220.219.819.816.6

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5030498447754680418536633422340331042748251823132059192016551510134113581247115410661003896813764731678629589566557553588564534505477453358
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 Assets7.612.213.913.612.511.911.011.812.312.611.410.69.69.58.47.77.218.517.016.415.917.216.517.417.220.721.620.720.420.720.722.625.825.826.325.223.823.321.1

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value-513414511938-56-79-67-54-391-21-36464310-10-2-4-1-10-2
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.00.30.40.30.1-0.2-0.3-0.2-0.2-0.00.00.0-0.1-0.20.20.20.1-0.1-0.0-0.1-0.0-0.0-0.0-0.1

Treasury Stock Value

us-gaap:TreasuryStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value755214180176174139858113924419719419217914514313814710310198987494918975707069595858575050505047
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.10.50.50.50.50.40.30.30.61.10.90.90.90.90.70.70.72.01.41.41.51.71.42.02.12.52.42.32.42.52.22.42.62.62.52.52.52.62.8

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value10710894949496978777141314141414111211200-189995400-6-300112318
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.30.30.30.30.30.30.30.30.10.10.10.10.10.10.10.10.10.00.00.0-0.00.10.20.20.30.20.10.00.0-0.3-0.1-0.00.00.10.10.10.21.1

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-240-651-999171316-634548-526184645097-30612481596480-420195201623504536944115925242-3293-38
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0-3.5-0.55.37.8-3.83.6-4.114.73.50.8-2.710.613.44.4-3.92.83.21.16.40.97.810.24.07.31.6-1.97.7-3.6

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-3272-144-459-556-373-1022-2310-489-764-579-200-157-329-765-313-483-836-44-470-74-225-266-191-239-150-156-120-11-41
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.5-0.8-2.5-3.2-2.2-6.2-15.0-3.8-6.1-4.5-1.8-1.4-2.8-6.4-2.9-4.4-12.0-0.7-8.1-1.3-4.4-5.6-4.4-5.9-4.3-5.9-7.1-1.0-3.9

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value8396704-10817858152823865513-79-4249-101191041772317-6210625236-757467130012-2426
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.535.5-0.61.00.30.90.530.04.1-0.6-0.40.4-0.11.01.01.633.3-1.01.80.54.6-1.61.71.73.80.00.7-2.02.4

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-240-651-999171316-634548-526184645097-30612481596480-420195201623504536944115925242-3293-38
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.0-3.5-0.55.37.8-3.83.6-4.114.73.50.8-2.710.613.44.4-3.92.83.21.16.40.97.810.24.07.31.6-1.97.7-3.6

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value462099549552224119300340230205254139261145169-171119388631078248325349392393-34233028282325222224
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.21.10.52.93.11.50.12.32.71.81.82.21.22.21.31.6-0.21.81.61.61.22.31.91.21.01.81.81.40.90.40.2-1.71.42.02.22.22.02.22.02.12.2

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value462029649251924116299338223201252132263146168-161119488641047948324839220-3822282822232424
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-3272-144-459-556-373-1022-2310-489-764-579-200-157-329-765-313-483-836-44-470-74-225-266-191-239-150-156-120-11-41
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.5-0.8-2.5-3.2-2.2-6.2-15.0-3.8-6.1-4.5-1.8-1.4-2.8-6.4-2.9-4.4-12.0-0.7-8.1-1.3-4.4-5.6-4.4-5.9-4.3-5.9-7.1-1.0-3.9

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value1772001941601761861271442181211209883951174945494331273426231810141512
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value14005017947005801155131661076598442670059492257274421224456420630727626330716735825540146
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value8396704-10817858152823865513-79-4249-101191041772317-6210625236-757467130012-2426
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.535.5-0.61.00.30.90.530.04.1-0.6-0.40.4-0.11.01.01.633.3-1.01.80.54.6-1.61.71.73.80.00.7-2.02.4

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312011-03-312010-03-31
Value254212265683945991018597334313120152303602505601990124519213790620555250500490240500645012722
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value10395510694044269273912211980149122936220256018191133173613886734312262535561714265190015297
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value5583442355444947321334252244234230220100
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareRepurchaseProgram

cnc:StockRepurchaseProgram



Period End2020-03-31
Value500
Percentage of PaymentsForRepurchaseOfCommonStock89.6

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value10395510694044269273912211980149122936220256018191133173613886734312262535561714265190015297
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:DebtInstrumentInterestRateStatedPercentage

cnc:A3.375SeniorNotesDue2030, us-gaap:SeniorNotes, us-gaap:SubsequentEvent



Period End2020-02-29
Value0.03375
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations cnc:A3.375SeniorNotesDue2030 us-gaap:SeniorNotes us-gaap:SubsequentEvent0.0

us-gaap:StatementScenario, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

srt:ScenarioForecast, cnc:FourPointSevenFivePercentSeniorNotesDueonMayFifteenTwentyTwentyTwo, us-gaap:SeniorNotes, us-gaap:SubsequentEvent



Period End2020-02-29
Value0.0475
Percentage of DebtInstrumentInterestRateStatedPercentage140.7
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:ScenarioForecast cnc:FourPointSevenFivePercentSeniorNotesDueonMayFifteenTwentyTwentyTwo us-gaap:SeniorNotes us-gaap:SubsequentEvent0.0

srt:ScenarioForecast, cnc:SixPointOneTwoFivePercentSeniorNotesDueinTwentyTwentyFour, us-gaap:SeniorNotes, us-gaap:SubsequentEvent



Period End2020-02-29
Value0.06125
Percentage of DebtInstrumentInterestRateStatedPercentage181.5
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:ScenarioForecast cnc:SixPointOneTwoFivePercentSeniorNotesDueinTwentyTwentyFour us-gaap:SeniorNotes us-gaap:SubsequentEvent0.0

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

us-gaap:ShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value1177134343840383433363730323629325123151716131111118643
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

Deferred Tax Assets Valuation Allowance

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value852661656632624
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value9457121316228689263515350685485345684408942874433485139361838
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cnc:AmountsrecordedasanadjustmenttopremiumrevenuesrelatedtominimumHBRandreturnofpremiumprograms



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-31113-44-288219133-813-6611
Percentage of AmountsrecordedasanadjustmenttopremiumrevenuesrelatedtominimumHBRandreturnofpremiumprograms100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cnc:HealthInsurerFeeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value345000017717818317100001281291307454545255313131310000
Percentage of HealthInsurerFeeExpense100.00.00.00.00.0100.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

cnc:PremiumTaxExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value1625882822110616598017161189546124051054359011035124984503572742392812061602527868901022354948373737412646
Percentage of PremiumTaxExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cnc:PremiumTaxRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value18538517611057160691082713066381213477513559123463162154244535832237030919228210769911032354948363637402646
Percentage of PremiumTaxRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther



Period End2020-03-31
Value1000000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalOther100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-31
Value1000000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalOther100.0

us-gaap:NoncontrollingInterest



Period End2020-03-31
Value0.0
Percentage of AdjustmentsToAdditionalPaidInCapitalOther0.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value1173434384037353336373032362932512315171613111111864
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value1173434384037353336373032362932512315171613111111864
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value16664656465626545393938394052434396657
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value011100000000600000000004000011
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges



Period End2020-03-312019-03-31
Value720
Percentage of AssetImpairmentCharges100.00.0

us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionsProFormaRevenue

cnc:WellCareHealthPlansInc



Period End2020-03-312019-03-31
Value2781525169
Percentage of BusinessAcquisitionsProFormaRevenue100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-2674-6645411001-1504-168028501595-198
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value-93198121576616264728728921821327615418314820231039585631067951345130224-35242829232224
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

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value0-71-3-30-3-1-2-7-4-2-7-21-110101-2-300000-3-3-100001
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest0.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value-93191122573613264428628721120927414718114920141039685641047650345130221-39232729222326
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CostOfGoodsAndServicesSold



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
Value825687619615544563622658543513437456
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CostsAndExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value25837185861880017713177591617116141136921265412625115581151611484113901050410520693360825638533350024531424339313389272126582605247521571677125312591177108110351039
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value112130-65-3323-26-107-2630-7626-7-51109-44-17-3-1-7-622-53-3-7050
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:DepreciationAndAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value2881681621581551411391111049791878689787635292926272322212015161412
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1-622000
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.00.00.00.0

us-gaap:GainLossOnSaleOfBusiness



Period End2020-03-312019-03-31
Value930
Percentage of GainLossOnSaleOfBusiness100.00.0

us-gaap:GainsLossesOnExtinguishmentOfDebt



Period End2020-02-292020-03-312019-03-312012-09-302012-06-302011-09-302011-06-30
Value-44-440000-8
Percentage of GainsLossesOnExtinguishmentOfDebt100.0100.00.00.00.00.0100.0

us-gaap:IncomeLossFromContinuingOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value469549552219300340230205254139255146170-161129288641068147334749392393-34233028282325222220
Percentage of IncomeLossFromContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxesPaidNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value3101130375610814519411381532032162172189339984121246957882122098
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value70413164-973357-568900-1022157-152462-20-237303107-4335-1704310858782676990-22-602640
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-881128-116-2298-352-115317
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInHealthCareInsuranceLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value252-51353310548-55663232485-47163-115358130-173-8196142281392271321928719611710013-33
Percentage of IncreaseDecreaseInHealthCareInsuranceLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value361117-80152234759-66638847723-736322459-217-307271192-50
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value-97220-3367-20103-6349-5110710424-89-160-33-935-775253-1953-25-35010-1-1
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPremiumsReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value2182757553-896662477143377176-69953755-59-980-21594717401973342198241119561204-4
Percentage of IncreaseDecreaseInPremiumsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value706664433044313300433221122120222211
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaidNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value10416181458711083577327111277252773332712522211411110
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeNonoperating



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value167126981209967806541535145413433321588109105744442345223047
Percentage of InvestmentIncomeNonoperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseBusinessAcquisitions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value36972-4556-115131900000029-9921370
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseBusinessAcquisitions100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value151471548114588136138771129671145610159657994099310950459738411849582353391
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value5031242288729456071522-729702127731299125551551725
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value20420152201540614354138821301212626103801003995739543941393228564837683855311
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value0-71-3-30-3-1-2-7-4-2-7-21-110101-2-300000-3-3-1000010
Percentage of NetIncomeLossAttributableToNoncontrollingInterest0.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value439549552024215300341231204254139266145168-16111938863
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-300-21-4011-110000
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest-7.00.00.0-0.40.4-26.70.00.30.4-0.6-6.20.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value469549552224119300340230205254139265145169-1711193
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest107.0100.0100.0100.499.6126.7100.099.799.6100.5100.0100.099.6100.0100.6106.2100.0100.0

us-gaap:NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance



Period End2020-03-312018-09-302016-12-312015-12-31
Value23-19
Percentage of NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312018-09-302016-12-312015-12-31
Value23-19
Percentage of NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance100.0100.0100.0100.0

us-gaap:OperatingIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value18827717664368538841489540181340438240521342377202201831731291931079270826740-27-4634485539404129
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

cnc:ManagedCare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value21721938558761532792421470118238374187459304337-19173138
Percentage of OperatingIncomeLoss115.479.1218.891.389.884.3224.486.187.065.270.085.477.988.188.989.4-95.078.675.4

cnc:SpecialtyServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-30
Value-2958-209567061-51687063102645362384039474514253227-18201012114
Percentage of OperatingIncomeLoss-15.420.9-118.88.710.215.7-124.413.913.034.830.014.622.111.911.110.6195.021.424.617.238.881.3-100.339.159.120.923.128.211.3

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax



Period End2020-03-312019-03-31
Value20
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax100.00.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-75-700-2-1-211131-2-1-11-101-5000000
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-139-1126819423-12-13-51-1282215-8233320
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-13926819423-12-13-51-1282215-8233320
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value-134-534809423-12-11-52-1372014-7953418-72-450-2222-80000010-11
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value401125-30-4316
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense



Period End2020-03-312019-03-31
Value-2411
Percentage of OtherNoncashIncomeExpense100.0100.0

us-gaap:OtherOperatingActivitiesCashFlowStatement



Period End2020-03-312019-03-31
Value64
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.0

us-gaap:OtherSignificantNoncashTransactionValueOfConsiderationGiven1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value11526000000183324000000031050-1013058013200750
Percentage of OtherSignificantNoncashTransactionValueOfConsiderationGiven1100.00.00.00.00.00.00.0100.0100.00.00.00.00.00.00.00.0100.00.0100.00.0100.0100.0100.00.0100.00.0100.0100.00.0

us-gaap:PaymentsForLossesAndLossAdjustmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2017815723148761434213331130381197810152954996219387953589648436855083905116
Percentage of PaymentsForLossesAndLossAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities



Period End2020-03-312019-03-312018-06-302018-03-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value5000010000000-7
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.00.00.00.00.0100.00.00.00.00.00.00.00.0100.0

us-gaap:PaymentsOfDebtExtinguishmentCosts



Period End2020-03-312019-03-31
Value210
Percentage of PaymentsOfDebtExtinguishmentCosts100.00.0

us-gaap:PaymentsOfDebtIssuanceCosts



Period End2020-03-312019-12-312019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value9219003000170851000400600060
Percentage of PaymentsOfDebtIssuanceCosts100.0100.00.00.0100.00.00.00.0100.00.0100.0100.00.00.00.0100.0100.0100.0100.00.0100.00.0100.00.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired



Period End2020-03-312019-03-312011-03-312010-03-31
Value3048002
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.00.00.0100.0

us-gaap:PolicyholderBenefitsAndClaimsIncurredHealthCare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value204201522015406143541388213012126261038010039957395439413932285648376838553114767443341813861358533902960274222982244226720361890144210281035957893859839
Percentage of PolicyholderBenefitsAndClaimsIncurredHealthCare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromDivestitureOfBusinessesNetOfCashDivested



Period End2020-03-312019-03-31
Value4560
Percentage of ProceedsFromDivestitureOfBusinessesNetOfCashDivested100.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value7437211-11-23-433-15-65235-164-3
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-312010-03-31
Value902562528336383416854276445564345641349701362390203251142165111869810911121214945117
Percentage of ProceedsFromSaleMaturityAndCollectionsOfInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value241721886318215172991683816559153551287512556128061142111441117241191110846108976953630258215506513147254351402334592931280327252645239624482110171215071302131512161180112110761068
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

us-gaap:HealthCarePremium



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
Value232141721017472165541620314990146231211311903109601085010905
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax96.091.295.995.796.290.595.294.194.885.695.095.3

us-gaap:Service



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
Value958802743745635659732762653633571536
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.04.34.14.33.84.04.85.95.24.95.04.7

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2001000
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueAcquisitions



Period End2020-03-312018-12-312018-09-302018-06-302018-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value115260018332400031050-10130580132
Percentage of StockIssuedDuringPeriodValueAcquisitions100.00.00.0100.0100.00.00.00.0100.00.0100.00.0100.0100.0100.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312018-12-312018-09-302018-06-302018-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value115260012121000030740-1090370132
Percentage of StockIssuedDuringPeriodValueAcquisitions100.00.00.066.164.80.00.00.099.00.0100.00.069.2-42.564.50.0100.0

us-gaap:CommonStock



Period End2020-03-312018-12-312018-09-302018-06-302018-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.00.00.00.00.00.00.00.00.00.00.00.00.0-2000.00.00.02000.0
Percentage of StockIssuedDuringPeriodValueAcquisitions0.00.00.00.00.00.00.00.00.00.0-0.00.00.00.50.00.00.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value566454443242541263122221196
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value566454443242541263122221196
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value20866152561549214415143761301912717104461030295599579953095578574843284625478
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-446-36-86-61-494-7-91-66-26314-36-117-235-10-56-77-167
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareRepurchaseProgram

us-gaap:TreasuryStockSharesAcquired

cnc:StockRepurchaseProgram



Period End2020-03-31
Value8
Percentage of TreasuryStockSharesAcquired100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-31
Value291000.0
Percentage of TreasuryStockSharesAcquired3.4

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value9000000
Percentage of TreasuryStockSharesAcquired107.30.00.00.00.00.00.0

us-gaap:TreasuryStockValueAcquiredCostMethod



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value5584235544494732133425224423423022010
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312011-03-31
Value170
Percentage of TreasuryStockValueAcquiredCostMethod3.0-0.0

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-03-312012-03-312011-03-31
Value5414235544494732133425224423423022010
Percentage of TreasuryStockValueAcquiredCostMethod97.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cnc:AffordableCareActCostSharingReductionReceivable



Period End2020-03-312019-12-312018-12-31
Value967357
Percentage of AffordableCareActCostSharingReductionReceivable100.0100.0100.0

cnc:AffordableCareActCostSharingReductionsPayable



Period End2020-03-312019-12-312018-12-31
Value11107
Percentage of AffordableCareActCostSharingReductionsPayable100.0100.0100.0

cnc:AffordableCareActMinimumMedicalLossRatio



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value46636730142634126515479442212713181816615
Percentage of AffordableCareActMinimumMedicalLossRatio100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cnc:AffordableCareActReinsurancePayable



Period End2020-03-312019-12-312018-12-31
Value156912391019
Percentage of AffordableCareActReinsurancePayable100.0100.0100.0

cnc:AffordableCareActRiskAdjustmentReceivable



Period End2020-03-312019-12-312018-12-31
Value32624591
Percentage of AffordableCareActRiskAdjustmentReceivable100.0100.0100.0

cnc:FinanceLeaseLiabilityAndOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1191221121384947
Percentage of FinanceLeaseLiabilityAndOther100.0100.0100.0100.0100.0100.0

cnc:InvestmentsDebtSecuritiesEquityMethodInvestmentsandOtherAmortizedCost



Period End2020-03-312019-12-312018-12-31
Value1290490478208
Percentage of InvestmentsDebtSecuritiesEquityMethodInvestmentsandOtherAmortizedCost100.0100.0100.0

cnc:InvestmentsDebtSecuritiesEquitySecuritiesandOtherFairValue



Period End2020-03-312019-12-312018-12-31
Value1292192388138
Percentage of InvestmentsDebtSecuritiesEquitySecuritiesandOtherFairValue100.0100.0100.0

cnc:LifeInsuranceContractsAndEquityInvestmentsFairValue



Period End2020-03-312019-12-312018-12-31
Value878812515
Percentage of LifeInsuranceContractsAndEquityInvestmentsFairValue100.0100.0100.0

cnc:ReturnofPremiumPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312016-09-302015-12-31
Value1052824848834718666918529515549614651207
Percentage of ReturnofPremiumPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cnc:SeniorNotesTotal



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value1507312010640663916344631062586270448645354558455945394550427042913757937740
Percentage of SeniorNotesTotal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value2135120559148181520214271129651374314542114279740964396761005288437840741176863902385536753378303028312358218518871698160816521622152112271187122411031052
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value1091812343645071216602571175408802594544024620469952164289333430623831220022082501219820061894156615181233995929972935864478493617495471
Percentage of AssetsFairValueDisclosure51.160.043.546.846.344.054.960.552.045.247.948.651.948.542.541.349.856.457.368.165.166.266.966.469.565.458.657.858.857.756.839.041.550.444.944.8

us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value10433821683688081766972546203574054825338502349774836455445064349385517021647117411801024937791666653702678680686657749694606607580
Percentage of AssetsFairValueDisclosure48.940.056.553.253.756.045.139.548.054.852.151.448.151.557.558.750.243.642.731.934.933.833.133.630.534.641.442.241.242.343.261.058.549.655.155.2

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value20620021217185216827
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value456631011
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax1.92.52.83.53.54.80.012.53.7

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value109131041001
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax4.94.56.15.84.74.80.00.03.7

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value76108110874084412
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax36.954.051.950.947.138.166.750.044.4

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value776973603392312
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax37.434.534.435.138.842.933.337.544.4

us-gaap:ResidentialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3289741001
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax15.54.04.24.14.74.80.00.03.7

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value711111000
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax3.40.50.50.61.24.80.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value189981131911089331
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3620134431
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax19.022.20.09.19.74.43.73.23.2

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1310126872
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax6.911.10.09.16.56.67.47.56.5

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1344551652444310
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax70.944.462.545.551.657.140.746.232.3

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4111318352510
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax2.111.112.59.19.719.832.426.932.3

us-gaap:ResidentialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value21236914126
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax1.111.125.027.319.49.913.012.919.4

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value000012332
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.00.00.00.03.22.22.83.26.5

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:Deposits



Period End2020-03-312019-12-312018-12-31
Value1010656556
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0

us-gaap:Investments



Period End2020-03-312019-12-312018-12-31
Value1033183917652
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1022.91279.11376.3

us-gaap:FinancialInstrument

cnc:RestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value14981317687182717
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis14.81.20.00.00.01.40.00.00.0

cnc:RestrictedCertificatesOfDeposit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value15348247947747443343044
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis15.173.50.00.00.077.90.00.00.0

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1050741724709728686598498437
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis104.0113.00.00.00.0123.40.00.00.0

us-gaap:BankTimeDeposits



Period End2020-03-312019-12-31
Value840
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis8.30.0

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value590380416402378366317296272
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis58.457.90.00.00.065.80.00.00.0

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value503636293705358333183190277424412208
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis498.6553.20.00.00.0573.70.00.00.0

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value251123202342229022602196223122242085
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis248.6353.70.00.00.0395.00.00.00.0

us-gaap:ResidentialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value997464486453457452382363337
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis98.770.70.00.00.081.30.00.00.0

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value771211221228251362259267311
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis76.332.20.00.00.065.10.00.00.0

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:Investments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2430297429622804247723871773
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:Investments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2465306930682888251223621779
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:Deposits



Period End2020-03-312019-12-312018-12-31
Value169106351
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost100.0100.0100.0

us-gaap:Investments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value3954303431373125311230262424
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost2339.62862.30.00.00.0862.10.0

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:Deposits



Period End2020-03-312019-12-312018-12-31
Value172108350
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue100.0100.0100.0

us-gaap:Investments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value3935310632053179313029982420
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue2287.82875.90.00.00.0856.60.0

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:Investments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value724881626788129
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:Investments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value745083656989130
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:Deposits



Period End2020-03-312019-12-312018-12-31
Value841550205
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost100.0100.0100.0

us-gaap:Investments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1239750710683610647474
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost147.3136.40.00.00.0315.60.0

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:Deposits



Period End2020-03-312019-12-312018-12-31
Value842550205
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0

us-gaap:Investments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1237752711683609646474
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue146.9136.70.00.00.0315.10.0

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

us-gaap:Investments



Period End2020-03-312019-12-312018-12-31
Value263615851504
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost100.0100.0100.0

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue

us-gaap:Investments



Period End2020-03-312019-12-312018-12-31
Value263316031488
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue100.0100.0100.0

us-gaap:FairValueByAssetClass

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableforsaleSecurities



Period End2020-03-312019-12-312018-12-31
Value1102977687068
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0

us-gaap:Deposits



Period End2020-03-312019-12-312018-12-31
Value1014658555
Percentage of AvailableForSaleSecuritiesDebtSecurities9.28.57.9

us-gaap:Investments



Period End2020-03-312019-12-312018-12-31
Value1034485807583
Percentage of AvailableForSaleSecuritiesDebtSecurities93.8110.5107.3

us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AvailableforsaleSecurities, us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312018-12-31
Value79773247
Percentage of AvailableForSaleSecuritiesDebtSecurities7.20.93.5

us-gaap:AvailableforsaleSecurities, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312018-12-31
Value1023276956821
Percentage of AvailableForSaleSecuritiesDebtSecurities92.899.196.5

us-gaap:Deposits, us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312018-12-31
Value813147122
Percentage of AvailableForSaleSecuritiesDebtSecurities7.41.91.7

us-gaap:Deposits, us-gaap:FairValueInputsLevel2



Period End2020-03-312019-12-312018-12-31
Value201511433
Percentage of AvailableForSaleSecuritiesDebtSecurities1.86.66.1

us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument

us-gaap:AvailableforsaleSecurities, us-gaap:FairValueInputsLevel1, us-gaap:BankTimeDeposits



Period End2020-03-31
Value0.0
Percentage of AvailableForSaleSecuritiesDebtSecurities0.0

us-gaap:AvailableforsaleSecurities, us-gaap:FairValueInputsLevel1, us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312018-12-31
Value11473247
Percentage of AvailableForSaleSecuritiesDebtSecurities1.00.93.5

us-gaap:AvailableforsaleSecurities, us-gaap:FairValueInputsLevel2, us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312018-12-31
Value1018744683
Percentage of AvailableForSaleSecuritiesDebtSecurities9.29.69.7

us-gaap:AvailableforsaleSecurities, us-gaap:FairValueInputsLevel2, us-gaap:BankTimeDeposits



Period End2020-03-31
Value84
Percentage of AvailableForSaleSecuritiesDebtSecurities0.8

us-gaap:AvailableforsaleSecurities, us-gaap:FairValueInputsLevel2, us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312018-12-31
Value587388361
Percentage of AvailableForSaleSecuritiesDebtSecurities5.35.05.1

us-gaap:AvailableforsaleSecurities, us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312018-12-31
Value496037133146
Percentage of AvailableForSaleSecuritiesDebtSecurities45.047.844.5

us-gaap:AvailableforsaleSecurities, us-gaap:FairValueInputsLevel2, us-gaap:MunicipalBonds



Period End2020-03-312019-12-312018-12-31
Value255423792187
Percentage of AvailableForSaleSecuritiesDebtSecurities23.230.630.9

us-gaap:AvailableforsaleSecurities, us-gaap:FairValueInputsLevel2, us-gaap:ResidentialMortgageBackedSecurities



Period End2020-03-312019-12-312018-12-31
Value1027471444
Percentage of AvailableForSaleSecuritiesDebtSecurities9.36.16.3

us-gaap:AvailableforsaleSecurities, us-gaap:FairValueInputsLevel3, us-gaap:BankTimeDeposits



Period End2020-03-31
Value0.0
Percentage of AvailableForSaleSecuritiesDebtSecurities0.0

us-gaap:Deposits, us-gaap:FairValueInputsLevel1, us-gaap:CashAndCashEquivalents



Period End2020-03-312019-12-312018-12-31
Value14988
Percentage of AvailableForSaleSecuritiesDebtSecurities1.40.10.1

us-gaap:Deposits, us-gaap:FairValueInputsLevel1, us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312018-12-31
Value664139114
Percentage of AvailableForSaleSecuritiesDebtSecurities6.01.81.6

us-gaap:Deposits, us-gaap:FairValueInputsLevel2, us-gaap:CertificatesOfDeposit



Period End2020-03-312019-12-312018-12-31
Value153482433
Percentage of AvailableForSaleSecuritiesDebtSecurities1.46.26.1

us-gaap:Deposits, us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-31
Value1820
Percentage of AvailableForSaleSecuritiesDebtSecurities0.20.3

us-gaap:Deposits, us-gaap:FairValueInputsLevel2, us-gaap:MunicipalBonds



Period End2020-03-312019-12-31
Value309
Percentage of AvailableForSaleSecuritiesDebtSecurities0.30.1

us-gaap:FairValueByAssetClass, us-gaap:FinancialInstrument

us-gaap:AvailableforsaleSecurities, us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312018-12-31
Value1018744683
Percentage of AvailableForSaleSecuritiesDebtSecurities9.29.69.7

us-gaap:AvailableforsaleSecurities, us-gaap:BankTimeDeposits



Period End2020-03-31
Value84
Percentage of AvailableForSaleSecuritiesDebtSecurities0.8

us-gaap:AvailableforsaleSecurities, us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312018-12-31
Value587388361
Percentage of AvailableForSaleSecuritiesDebtSecurities5.35.05.1

us-gaap:AvailableforsaleSecurities, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312018-12-31
Value496037133146
Percentage of AvailableForSaleSecuritiesDebtSecurities45.047.844.5

us-gaap:AvailableforsaleSecurities, us-gaap:MunicipalBonds



Period End2020-03-312019-12-312018-12-31
Value255423792187
Percentage of AvailableForSaleSecuritiesDebtSecurities23.230.630.9

us-gaap:AvailableforsaleSecurities, us-gaap:ResidentialMortgageBackedSecurities



Period End2020-03-312019-12-312018-12-31
Value1027471444
Percentage of AvailableForSaleSecuritiesDebtSecurities9.36.16.3

us-gaap:AvailableforsaleSecurities, us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312018-12-31
Value11473247
Percentage of AvailableForSaleSecuritiesDebtSecurities1.00.93.5

us-gaap:Deposits, us-gaap:CashAndCashEquivalents



Period End2020-03-312019-12-312018-12-31
Value14988
Percentage of AvailableForSaleSecuritiesDebtSecurities1.40.10.1

us-gaap:Deposits, us-gaap:CertificatesOfDeposit



Period End2020-03-312019-12-312018-12-31
Value153482433
Percentage of AvailableForSaleSecuritiesDebtSecurities1.46.26.1

us-gaap:Deposits, us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-31
Value1820
Percentage of AvailableForSaleSecuritiesDebtSecurities0.20.3

us-gaap:Deposits, us-gaap:MunicipalBonds



Period End2020-03-312019-12-31
Value309
Percentage of AvailableForSaleSecuritiesDebtSecurities0.30.1

us-gaap:Deposits, us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312018-12-31
Value664139114
Percentage of AvailableForSaleSecuritiesDebtSecurities6.01.81.6

us-gaap:FinancialInstrument

cnc:RestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value14981317687182717
Percentage of AvailableForSaleSecuritiesDebtSecurities1.40.10.00.00.00.10.00.00.0

cnc:RestrictedCertificatesOfDeposit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value15348247947747443343044
Percentage of AvailableForSaleSecuritiesDebtSecurities1.46.20.00.00.06.10.00.00.0

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1018744730714728683594496437
Percentage of AvailableForSaleSecuritiesDebtSecurities9.29.60.00.00.09.70.00.00.0

us-gaap:BankTimeDeposits



Period End2020-03-312019-12-31
Value840
Percentage of AvailableForSaleSecuritiesDebtSecurities0.80.0

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value587388429411380361309289271
Percentage of AvailableForSaleSecuritiesDebtSecurities5.35.00.00.00.05.10.00.00.0

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value497837333810366533423146273424022210
Percentage of AvailableForSaleSecuritiesDebtSecurities45.148.10.00.00.044.50.00.00.0

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value258423882414234922902187219822022087
Percentage of AvailableForSaleSecuritiesDebtSecurities23.430.70.00.00.030.90.00.00.0

us-gaap:ResidentialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1027471493457455444368351332
Percentage of AvailableForSaleSecuritiesDebtSecurities9.36.10.00.00.06.30.00.00.0

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value778212222229251361256264309
Percentage of AvailableForSaleSecuritiesDebtSecurities7.12.70.00.00.05.10.00.00.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-312011-12-312011-09-302011-06-302010-12-31
Value93081212362156875634553426847670756684072428144254839393029822710343617601665196716661546152311991218974741688730843432573451474433
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-312011-12-312011-09-302010-12-31
Value93081212362156875634553426847670756684072428144254839393029822710343617601665196716661546152311991218974741688730843432573451433
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value526383381253363385328
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndCapitalLeaseObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value17279137267041713468156686638362795176469947214720464746554589449442801221128111441128893954891817668520551536538395408350351351339330
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:BusinessAcquisition, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFaceAmount

cnc:WellCareHealthPlansInc, cnc:SevenHundredFiftyMillion5.375SeniorNotesDueAugust2026, us-gaap:SeniorNotes



Period End2020-03-312020-01-31
Value0750
Percentage of DebtInstrumentFaceAmount100.0100.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

cnc:A3.375SeniorNotesDue2030, us-gaap:SeniorNotes



Period End2020-03-312020-02-29
Value22000
Percentage of DebtInstrumentFaceAmount266.70.0

cnc:FourPointSevenFivePercentSeniorNotesDueinTwentyTwentyFive, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-11-30
Value22002200120012001200120012001200120012001200120012001200
Percentage of DebtInstrumentFaceAmount293333.30.00.00.00.00.00.00.00.00.00.00.00.00.0

cnc:FourPointSevenFivePercentSeniorNotesDueonMayFifteenTwentyTwentyTwo, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302014-12-312014-04-30
Value100010001000100010001000100010001000100010001000100010001000500500500500500
Percentage of DebtInstrumentFaceAmount133333.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cnc:FourPointSixTwoFivePercentSeniorNotesDueinTwentyTwentyNine, us-gaap:SeniorNotes



Period End2020-03-312019-12-31
Value33500
Percentage of DebtInstrumentFaceAmount466.70.0

cnc:FourPointTwoFivePercentSeniorNotesDueInTwentyTwentySeven, us-gaap:SeniorNotes



Period End2020-03-312019-12-31
Value22500
Percentage of DebtInstrumentFaceAmount333.30.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

cnc:A3.375SeniorNotesDue2030, us-gaap:SeniorNotes, us-gaap:SubsequentEvent



Period End2020-02-29
Value2000
Percentage of DebtInstrumentFaceAmount0.0

us-gaap:LongtermDebtType

us-gaap:SeniorNotes



Period End2020-03-312016-12-31
Value2100400
Percentage of DebtInstrumentFaceAmount280000.00.0

us-gaap:StatementScenario, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:DebtInstrumentRepurchasedFaceAmount

srt:ScenarioForecast, cnc:FourPointSevenFivePercentSeniorNotesDueonMayFifteenTwentyTwentyTwo, us-gaap:SeniorNotes, us-gaap:SubsequentEvent



Period End2020-02-29
Value1000
Percentage of DebtInstrumentRepurchasedFaceAmount100.0

srt:ScenarioForecast, cnc:SixPointOneTwoFivePercentSeniorNotesDueinTwentyTwentyFour, us-gaap:SeniorNotes, us-gaap:SubsequentEvent



Period End2020-02-29
Value1000
Percentage of DebtInstrumentRepurchasedFaceAmount100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1303434551000224424201118672689
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value102151125170196168662628
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger78.544.027.517.08.76.95.93.94.1

us-gaap:BankTimeDeposits



Period End2020-03-312019-12-31
Value20
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger1.50.0

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3214373129140905151
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger2.36.19.57.35.75.88.17.67.4

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value16481103751010871337180185
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger12.314.024.237.545.036.030.126.826.9

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value11118117496806286172175
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger0.83.24.011.722.133.325.625.625.4

us-gaap:ResidentialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value681103163241233178155171
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger4.623.622.616.310.79.615.923.124.8

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value031561021722021618879
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger0.09.012.310.27.78.314.413.111.5

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value104482555402614
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value610012100
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss60.025.00.00.04.03.62.50.00.0

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value000124431
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.00.00.012.58.07.310.011.57.1

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value422312251384
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss40.050.050.037.548.045.532.530.828.6

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value00013141063
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.00.00.012.512.025.525.023.121.4

us-gaap:ResidentialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0123681085
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.025.050.037.524.014.525.030.835.7

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value000012211
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.00.00.00.04.03.65.03.87.1

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value40867036294367722555429340522658
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value628153123128221318409355228
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months15.421.819.629.428.612.49.58.88.6

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value280118562872137174200112
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months6.916.88.96.49.35.44.14.94.2

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value24611922492203921389191317721044
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months60.227.339.650.550.854.444.643.739.3

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value275185120497459115181404943
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months6.726.319.111.29.623.135.434.635.5

us-gaap:ResidentialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value684442111261186161109
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months1.76.36.72.51.62.44.34.04.1

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3741139015993160222
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months9.21.66.20.00.12.32.23.98.4

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value179543636686717
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3010122331
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss16.820.00.033.333.35.64.44.55.9

us-gaap:CommercialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1310002441
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss7.320.00.00.00.05.65.96.05.9

us-gaap:CorporateDebtSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value13023242731356
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss72.640.075.066.766.775.045.652.235.3

us-gaap:MunicipalBonds



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value41100425197
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss2.220.025.00.00.011.136.828.441.2

us-gaap:ResidentialMortgageBackedSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value200001441
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss1.10.00.00.00.02.85.96.05.9

us-gaap:USTreasuryAndGovernment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value000000121
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss0.00.00.00.00.00.01.53.05.9

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeNotionalAmount

us-gaap:InterestRateSwap



Period End2020-03-312020-02-292019-12-312019-10-312018-12-31
Value2100100021006002700
Percentage of DerivativeNotionalAmount100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:SubsequentEventType

us-gaap:InterestRateSwap, us-gaap:SubsequentEvent



Period End2020-02-29
Value2100
Percentage of DerivativeNotionalAmount210.0

us-gaap:EquityMethodInvestments



Period End2020-03-312019-12-312018-12-31
Value748664387
Percentage of EquityMethodInvestments100.0100.0100.0

us-gaap:EquitySecuritiesFvNi



Period End2020-03-312019-12-31
Value6850
Percentage of EquitySecuritiesFvNi100.00.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1



Period End2020-03-31
Value683
Percentage of EquitySecuritiesFvNi99.7

us-gaap:FairValueInputsLevel2



Period End2020-03-31
Value2
Percentage of EquitySecuritiesFvNi0.3

us-gaap:FairValueInputsLevel3



Period End2020-03-31
Value0.0
Percentage of EquitySecuritiesFvNi0.0

us-gaap:InterestRateDerivativesAtFairValueNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value01-213619514713612071-49-48-69-58-25-42-1291851411-5-9
Percentage of InterestRateDerivativesAtFairValueNet0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312014-01-012013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1141374737975744773816831698350034771428643334170429039293767395038632298214420921950172315881394129811121111107110781067926919859708607498482471456470
Percentage of LiabilityForClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-31
Value1139274537954742873616804695349864758426843164160428239243767395022981723
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LifeInsuranceCorporateOrBankOwnedAmount



Period End2020-03-312019-12-312018-12-31
Value130148128
Percentage of LifeInsuranceCorporateOrBankOwnedAmount100.0100.0100.0

us-gaap:CreditFacility

us-gaap:LineOfCredit

us-gaap:RevolvingCreditFacility



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value588934155133572841000675150150150100100300185515225
Percentage of LineOfCredit100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LoansPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value149140119102786340260
Percentage of LoansPayable100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OperatingLeaseLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value992783777747739
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0

us-gaap:OtherNotesPayable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value53545556575759596061626363646566666768696970707172727374838484858686878889
Percentage of OtherNotesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherRestrictedAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value10146586556305825555501943140135138137140138137137143115106101981009978574640393934333337262626262220
Percentage of OtherRestrictedAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsAndOtherReceivablesNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1130462475606519458195150464740673648341339553901312130983445348825291279128112481245912685610570428355357320263316400278157139152132136103
Percentage of PremiumsAndOtherReceivablesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value3633312210101111812201361381451481471441561561551551481401191200
Percentage of RedeemableNoncontrollingInterestEquityCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value2120211920273017131817108500000
Percentage of ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:RestrictedCashAndCashEquivalents



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value1491317687182716176812678
Percentage of RestrictedCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisition, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:SeniorNotes

cnc:WellCareHealthPlansInc, cnc:SevenHundredFiftyMillion5.375SeniorNotesDueAugust2026, us-gaap:SeniorNotes



Period End2020-03-312019-12-31
Value8000
Percentage of SeniorNotes100.00.0

us-gaap:DebtInstrument, us-gaap:LongtermDebtType

cnc:A1200MillionSeniorNotesDueApril2025, us-gaap:SeniorNotes



Period End2020-03-312019-12-31
Value12500
Percentage of SeniorNotes156.20.0

cnc:A3.375SeniorNotesDue2030, us-gaap:SeniorNotes



Period End2020-03-312019-12-31
Value20000
Percentage of SeniorNotes250.00.0

cnc:FivePointThreeSevenFivePercentSeniorNotesDueInJuneTwentyTwentySix, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value180018001800180018001800180018000
Percentage of SeniorNotes225.00.00.00.00.00.00.00.00.0

cnc:FourPointSevenFivePercentSeniorNotesDueinTwentyTwentyFive, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value22362228120012001200120012001200120012001200120012001200
Percentage of SeniorNotes279.50.00.00.00.00.00.00.00.00.00.00.00.00.0

cnc:FourPointSevenFivePercentSeniorNotesDueonMayFifteenTwentyTwentyTwo, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1007100410041004100510051005100610061006100710071008100810081008500500
Percentage of SeniorNotes125.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cnc:FourPointSixTwoFivePercentSeniorNotesDueinTwentyTwentyNine, us-gaap:SeniorNotes



Period End2020-03-312019-12-312018-12-31
Value350035000
Percentage of SeniorNotes437.50.00.0

cnc:FourPointTwoFivePercentSeniorNotesDueInTwentyTwentySeven, us-gaap:SeniorNotes



Period End2020-03-312019-12-312018-12-31
Value248024790
Percentage of SeniorNotes310.00.00.0

cnc:SixPointOneTwoFivePercentSeniorNotesDueinTwentyTwentyFour, us-gaap:SeniorNotes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value010001000100010001000100010001000100010001000100010001000100010000
Percentage of SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1565555223666665556555523333333222222222
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312015-12-312014-12-31
Value1565555223666665
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnamortizedDebtIssuanceExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1531436666707579816265667073776467631415161714
Percentage of UnamortizedDebtIssuanceExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept

us-gaap:Revenues us-gaap:StatementBusinessSegments


us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents


us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:StatementScenario, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType