NC


Line plots across dimensions of each concept
Tables

Table of contents


us-gaap:StatementClassOfStock
us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:TimingOfTransferOfGoodOrService
us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:Revenues

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GrossProfit
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:OperatingExpenses

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestExpense

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:NonoperatingIncomeExpense

us-gaap:IncomeTaxExpenseBenefit

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent

us-gaap:AmortizationOfIntangibleAssets

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:AccountsPayableCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:StockholdersEquity
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividends

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

nacco:EarningsOfUnconsolidatedMines

nacco:NonoperatingIncomeExpenseClosedMineObligations

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EquitySecuritiesFvNiRealizedGainLoss
dei:LegalEntity, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:GainLossOnDispositionOfAssets1

us-gaap:IncomeLossAttributableToParent

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:IncreaseDecreaseInEquitySecuritiesFvNi

us-gaap:InvestmentIncomeNonoperating

us-gaap:LeaseCost

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:ShortTermLeaseCost
us-gaap:ShareRepurchaseProgram, us-gaap:StatementClassOfStock
us-gaap:TreasuryStockSharesAcquired

us-gaap:TreasuryStockValueAcquiredParValueMethod
us-gaap:ShareRepurchaseProgram, us-gaap:StatementClassOfStock
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:VariableLeaseCost
us-gaap:StatementClassOfStock
dei:EntityCommonStockSharesOutstanding

nacco:FinanceLeaseRightOfUseAssetAccumulatedAmortization

nacco:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:AccountsReceivableNet

us-gaap:AccruedSalariesCurrent

us-gaap:AssetRetirementObligationCurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:StatementClassOfStock
us-gaap:CommonStockValueOutstanding

us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:DeferredCompensationLiabilityCurrent

us-gaap:DueFromAffiliates

us-gaap:DueToAffiliateCurrentAndNoncurrent

us-gaap:EnergyRelatedInventoryCoal

us-gaap:EquityMethodInvestments
us-gaap:BalanceSheetLocation

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:IncomeTaxesReceivable

us-gaap:LinesOfCreditCurrent

us-gaap:MineReclamationAndClosingLiabilityNoncurrent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherInventorySupplies

us-gaap:PrepaidExpenseAndOtherAssets

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount

Tables

  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock us-gaap:CommonClassA▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▂▃▃▄▅▅▆▆▆████████5.4637615.452835.3974585.425645.4211345.4179065.352595.3734045.3747225.3693265.2821065.276055.2662685.2633075.2079555.2052935.2407775.3077435.2654465.2769635.4071125.5748145.6622145.8210786.0462386.2182896.2904146.3569966.4547646.7564826.7706896.8039996.7991426.7954046.7783466.8006156.798464NA6.737199NANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock us-gaap:CommonClassB▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▄▄▄▄▄▄▅▇▇▇███1.568551.5685541.568671.568681.568781.568811.568811.569251.5694221.5697461.5701461.5701481.5704481.5705151.5709151.5712151.5715181.5715281.5717271.5720271.5726271.5726471.5732921.5738041.580591.580871.5811061.5814061.5818351.5821551.582311.5903111.5904211.5925711.5955811.5957811.595781NA1.596093NANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█7.0247.04NA6.9916.9866.998NA6.946.946.939NA6.8666.856.843NA6.7866.8746.885NA6.9357.0487.208NA7.5337.7187.86NA7.9968.1848.399NA8.4098.48.394NA8.4168.4078.399NA8.3468.338
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁7.0247.0NA6.9916.9866.949NA6.946.946.894NA6.8396.8356.806NA6.7866.8566.857NA6.9247.0487.189NA7.5157.7127.848NA7.9888.1798.36NA8.3918.3888.379NA8.3958.3938.363NA8.3328.331
us-gaap:EarningsPerShareBasic ▄▄▄▅▅▅▅▅▄▅▅▅▅▄▆▄▄▄▅▄▄▄▁▅▄▄▆▅▄▄▅▆▅▆▇▆▅█▆▅▅0.860.880.91000000000000011.471.142.161.58999999999999941.330.921.191.481.230.990.733.56-0.070.450.412.650.45-0.040.14-5.571.02-0.47-0.192.861.540.630.532.834.532.63.016.483.062.297.514.611.621.91
us-gaap:EarningsPerShareDiluted ▄▄▄▅▅▅▅▅▄▅▅▅▅▄▆▄▄▄▅▄▄▄▁▅▄▄▆▅▄▄▅▆▅▆▇▆▅█▆▅▅0.860.880.90000000000000041.471.142.151.56999999999999981.330.921.181.471.230.990.733.53-0.070.450.412.630.45-0.040.14-5.571.02-0.47-0.192.851.540.630.532.814.522.63.06.473.052.287.484.61.621.91
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▁▁▁▁▁▁▁▁▁▁▁▁▁▂▃▃▂▂▃▃▂▂▃▃▂▂▃▃▂▂▃▃▇▇▃██▇█▆▆35.35537.64426.93832.60341.35240.09739.05431.4433.68131.226.43721.94128.1168.582284.218220.792178.007173.421286.519239.107196.5193.734297.285221.714200.37177.413311.983228.614196.017196.052318.2210.1773.4803.2273.9823.4811.0745.5866.2664.9598.8
us-gaap:Revenues ▁▁▁▁▁▁▁▁▁▁▁▁▂▂▃▃▂▂▃▃▂▂▃▃▂▂▃▃▂▂▃▃▇▇▃██▇█▆▆35.35537.64426.93832.60341.35240.09739.05431.4433.68131.226.43721.941181.076168.582284.218220.792178.007173.421286.519239.107196.5193.734297.285221.714200.37177.413311.983228.614196.017196.052318.2210.1773.4803.2273.9823.4811.0745.5866.2664.9598.8
us-gaap:CostOfGoodsAndServicesSold ▁█31.51532.563NA26.41632.68426.71225.45125.34528.83525.77621.14819.46623.503NANANANANANANANANANANANANANANANANANANA633.3658.6770.2685.9673.1608.9698.9534.8475.7
us-gaap:GrossProfit ▁▁▁▁▁▁▁▁▁▁▁▁▃▂▄▃▂▂▃▃▂▂▃▃▂▂▄▃▃▃▄▃▆▇█▆▆▆▇▆▆3.845.0812.8886.1878.66813.38513.6036.0954.8465.4245.2892.47543.42839.13573.61151.70840.52940.00563.71142.21535.38138.18965.83546.54336.52336.17178.18149.21947.6346.26184.852.3140.1144.6181.1137.5137.9136.6167.3130.1123.1
us-gaap:OperatingExpenses ▁▁▁▁▁▁▁▁▁▁▁▁▃▃▃▄▃▃▃▃▃▃█▃▃▃▄▃▃▃▃▃▆▃▇▆▆13.13613.50414.29714.96213.6513.28214.92412.68912.46711.25815.51611.68346.32246.72257.6766.11148.35447.24153.74248.68946.16947.501151.31847.28451.98149.19461.59444.34549.10851.33758.949.0119.249.457123.6111.2116.3NA122.7109.3105.3
us-gaap:SellingGeneralAndAdministrativeExpense ▁▁▁▁▁▁▁▁▁▁▁▁▃▃▄▃▃▃▄▃▃▃▄▃▃▃▄▃▃▃▄▄███▇█▇█▇▇12.59112.72714.00114.34112.78812.65314.6712.03211.86310.62715.68211.72347.99945.7956.61247.50447.52846.25954.73947.55145.21946.41652.90546.37350.9948.42957.5843.31748.48450.99160.352.1121.5118.8124.4111.1116.4113.4121.5105.2104.8
us-gaap:OperatingIncomeLoss ▅▅▅▅▅▆▆▆▅▅▅▅▆▅▇▅▅▅▆▅▅▅▁▆▅▅▆▆▅▅▇▆▇▇▇▇▇▇█▇▆4.4827.584.6238.6639.16116.37315.55410.5477.8029.7216.5066.98910.5817.36830.3940.6995.215.41221.5385.761.2883.241-73.15611.323-3.891-0.58528.82916.6828.8037.02237.014.831.537.842.337.431.135.356.732.127.3
us-gaap:InterestExpense ▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▃▃▃▃▃▂▂▂▂▂▂▂▆▆▇▇▇▇███0.330.4030.1890.230.2220.2310.3620.4210.5690.6460.6340.9461.391.3471.3951.3221.471.5051.5411.5971.6612.1252.1162.0461.951.4541.2791.0441.1481.3041.41.54.95.55.86.46.16.26.77.06.9
us-gaap:OtherNonoperatingIncomeExpense ▆▆▅█▆▆▆▇▆▆▆▆▆▇▅▅▃▆▆▅▆▅▅▆▆▆▆▆▅▆▆▆▄█▁▇█▇▄▇▇0.1020.015-0.7091.258-0.011-0.011-0.2670.4830.373-0.0310.087-0.0640.3260.702-0.471-0.447-2.017-0.053-0.005-0.9080.167-0.479-0.342-0.0860.273-0.1220.061-0.174-0.4760.1330.20.3-1.11.4-3.30.91.30.7-1.00.41.0
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities us-gaap:VariableInterestEntityNotPrimaryBeneficiary13.803NANANA14.516NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:VariableInterestEntitiesByClassificationOfEntity us-gaap:VariableInterestEntityNotPrimaryBeneficiaryNA16.241NA17.82714.51616.737NA17.40815.45616.122NA16.60213.61615.71NA14.75513.24613.121NA12.57112.53113.119NA12.20110.99413.168NA12.17210.69512.783NA11.911.012.579NA11.410.2NANANANA
us-gaap:NonoperatingIncomeExpense ▃▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂█▁▁▁1.102-1.4840.0542.9580.6020.965-0.610.111-0.221-0.741-0.752-1.033-1.105-0.72-0.396-1.685-3.533-1.631-1.09-2.485-1.619-1.834-4.098-2.257-2.405-1.504-1.673-1.198-1.56-1.185-4.2-1.2-6.0-4.1-1.7-5.5-4.851.7-11.2-12.7-10.4
us-gaap:IncomeTaxExpenseBenefit ▅▅▅▅▅▅▆▅▅▅▅▆▆▅▆▅▅▅▅▅▅▅▁▅▅▅▆▆▅▅▆▆▆▆▇▆▆█▆▆▅-0.466-0.07-1.6981.3571.7882.323.9281.4581.1880.804-3.9252.6252.6881.675.867-0.544-1.4390.9792.3570.134-0.0560.38-36.5851.367-2.672-0.5654.63.1592.0961.4159.13.43.78.514.16.27.224.27.06.10.9
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▁█0.1010.155NA0.070.0710.101NA0.1030.1050.14NA0.1440.5721.24NA0.435-1.254-0.871NA-1.672-0.161-0.936NA0.312-0.323-0.184.5782.7510.5690.843NANANA10.285NANANANANANANA
us-gaap:NetIncomeLoss ▄▄▄▄▄▅▄▄▄▄▄▄▄▄▅▄▄▄▅▄▄▄▁▄▄▄▅▅▄▄▅▆▅▅▇▅▅█▆▅▅6.056.1666.37510.2647.97515.01811.0169.26.3938.17610.1728.3986.7884.97824.131-0.4423.1162.80218.0913.141-0.2751.027-40.6697.699-3.624-1.52422.55612.3255.1474.42223.738.021.825.254.425.719.262.838.413.515.9
us-gaap:ComprehensiveIncomeNetOfTax ▄▄▄▄▄▅▄▄▄▄▄▄▄▄▅▄▄▄▅▄▄▄▁▄▄▄▅▅▄▄▅▇▄▆▆▄▅█▆▅▄6.1516.3218.40710.3348.04615.11910.8569.3036.4988.31611.2818.5427.366.21823.338-0.0071.8621.93117.6051.469-0.4360.091-48.4088.011-3.947-1.70427.40415.0765.7165.85622.148.99.537.735.710.328.472.137.926.22.3
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 EBT Margin us-gaap:VariableInterestEntitiesByClassificationOfEntity us-gaap:VariableInterestEntityNotPrimaryBeneficiaryNA183.077NA187.488177.883187.239NA205.838182.018183.046NA203.134174.554194.174NA178.009160.281145.07NA154.545155.103148.071NA150.529148.075138.523NA152.999141.302139.636NA144.2135.0134.378NA131.3118.5NANANANA
 Gross Margin us-gaap:VariableInterestEntitiesByClassificationOfEntity us-gaap:VariableInterestEntityNotPrimaryBeneficiaryNA183.077NA187.488177.883187.239NA205.838182.018183.046NA203.134174.554194.174NA178.009160.281145.07NA154.545155.103148.071NA150.529148.075138.523NA152.999141.302139.636NA144.2135.0134.378NA131.3118.5NANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nacco:CoalMining▇▆▁▅▇▄█▅▆▅21.57320.92810.58218.79922.5716.7524.50918.58320.8617.597NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nacco:MineralsManagement▁▃▂▃▅█▄▂▂▂1.9875.2414.1695.0228.24212.6866.1083.9023.8663.476NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nacco:NorthAmericanMining▇▇█▂▅▅▁▂▂▄12.04811.62412.3278.99310.72810.7758.5789.0929.06710.213NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:Assets ▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▃▂▂▃▃▃▃▃▃▃▃▃▃█████442.954435.92444.773412.77399.18393.787376.991366.546366.018374.176389.552384.949621.26620.291668.021664.11609.523606.514655.408702.717651.399653.637770.52829.16788.793780.0809.956778.089698.117713.728776.3822.01704.81749.81801.41757.51754.4NA1658.3NANA
us-gaap:Liabilities ▁▁▁▁▁▁▁▁▁▁▁▁▃▃▃▃▃▃▃▃▃▃▄▄▃▃▃▃▃▃▃▄▇▇███143.683142.083155.381129.515127.03129.52126.287126.345135.046149.294170.104177.886390.3395.765447.728467.802410.551404.495454.27517.973459.305450.687559.046559.918514.006490.457512.176502.368430.091433.235494.9530.91088.11139.11224.41209.71213.2NA1210.1NANA
us-gaap:LiabilitiesAndStockholdersEquity ▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▃▂▂▃▃▃▃▃▃▃▃▃▃█████442.954435.92444.773412.77399.18393.787376.991366.546366.018374.176389.552384.949621.26620.291668.021664.11609.523606.514655.408702.717651.399653.637770.52829.16788.793780.0809.956778.089698.117713.728776.3822.01704.81749.81801.41757.51754.4NA1658.3NANA
us-gaap:StockholdersEquity ▃▃▃▃▂▂▂▂▂▂▂▁▂▂▂▁▁▁▁▁▁▁▁▂▂▃▃▂▂▃▃▃██▇▇▇299.271293.837289.392283.255272.15264.267250.704240.201230.972224.882219.448207.063230.96224.526220.293196.308198.972202.019201.138184.744192.094202.95211.474269.242274.787289.543297.78275.721268.026280.493281.4291.1615.9609.9576.2547.1540.5NA447.4NANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AssetsCurrent ▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▃▃▂▂▃▃▂▂▃▃▇████190.703188.927200.668180.31175.581164.031164.174151.466152.386162.289176.988164.248343.959330.895381.732384.249320.964315.766361.434411.293359.604355.014465.713450.443406.342403.237461.29454.955392.64406.862486.8509.11274.11341.41375.11331.01311.4NA1214.2NANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▃▃▃▃▃▂▃▃▂▃▃▃▂▂▂▂▁▂▂▁▁▁▂▂▂▂▃▂▃▃▄▄▇▇█▅▇▆▆▅▇95.54693.726122.892115.06198.42379.05885.25783.0579.95283.403101.693.93860.20956.42680.64844.26634.25735.71852.49911.84719.32329.31261.13550.59860.90770.0795.3979.35385.05896.87139.9155.7303.2314.9338.6217.6301.5249.8261.9215.9270.0
us-gaap:InventoryNet ▁▁▁▁▁▁▁▁▁▁▁▁▃▃▃▃▃▃▃▄▃▃▃▄▃▃▃▃▃▃▃▃▇▇▇█▇35.73235.99640.46533.08730.87632.79931.20933.18229.15930.11530.01530.58163.759158.982157.342201.309167.589164.334165.016234.214203.167187.096190.382220.607188.148193.913184.445207.349167.47162.234169.4205.4474.8477.9470.3540.7491.2NA447.4NANA
us-gaap:OtherAssetsCurrent 19.089NA6.528NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AmortizationOfIntangibleAssets ▅▅▁▄▆▄▅▄▅▄▂▂▆▆▆█▅▆▅█▆▇▃▆▆▅▆▇▃▇▆▅▂0.7920.7770.3570.7150.8810.6470.8260.7140.8140.6840.4820.4350.9640.9320.9281.1640.8260.9820.8141.1380.951.0850.6330.9110.9910.7650.9321.0760.6191.0410.960.7670.464NANANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▁▁▁▁▂▂▂▂▂▂▂▃▄▄▄▄▅▅▅▅▅▆▆▅▅▅▆▆▆▆▆█▅▅▅▅▅36.33337.12537.90238.27338.98739.86940.51641.34242.05642.8743.55444.03651.06252.02652.95953.87155.03455.85856.84357.6558.78659.73760.82157.01757.92958.9259.68560.61761.69362.31263.471.956.857.357.958.559.1NA60.0NANA
us-gaap:OperatingLeaseRightOfUseAsset ▁▅█10.74811.08111.398NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▂▂▁▂▁▁▁▁▁▁▁▁▁▁▁▅▄▄▄▄▄▄▄▅▅▅▅▄▄▄▂▂▇▇███36.62531.79428.18929.78124.63225.08324.41223.63723.3122.50723.06322.7426.16926.40926.55771.29964.98562.70456.32659.7760.96164.42262.28369.66170.1671.98569.72564.6854.18554.09336.740.095.294.1110.6108.7109.3NA108.5NANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel,us-gaap:FairValueByMeasurementFrequency us-gaap:FairValueInputsLevel1,us-gaap:FairValueMeasurementsRecurring█▁▄▃▂▂▁▂▂12.4868.94710.129.5889.4459.4548.7169.4619.285NA9.166NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementBasis,us-gaap:FairValueByMeasurementFrequency us-gaap:EstimateOfFairValueFairValueDisclosure,us-gaap:FairValueMeasurementsRecurring█▁▄▃▂▂▁▂▂12.4868.94710.129.5889.4459.4548.7169.4619.285NA9.166NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:LiabilitiesCurrent ▁▁▁▁▁▁▁▁▁▁▁▁▂▂▃▃▂▂▂▃▂▂▃▃▃▂▃▃▂▂▃▃▆███▇39.26138.10761.96652.77553.16749.5742.24844.18645.92140.83953.97643.223186.049167.204221.828229.506161.684140.797191.746255.999192.803185.217254.681287.495234.425202.061238.119250.468173.455181.251227.2243.8690.3870.5891.2842.6719.5NA663.5NANA
us-gaap:LongTermDebtCurrent ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂█▆▅▃0.9410.9330.7950.3940.4990.5730.6540.6471.0371.0811.1251.1681.2121.7571.7441.5321.5231.5131.5041.4951.4851.4761.4677.8867.8777.8687.8597.856.9696.9657.07.037.0229.9178.1124.973.8NA22.5NANA
us-gaap:AccountsPayableCurrent ▁▁▁▁▁▁▁▁▁▁▁▁▂▂▃▃▂▂▂▃▃▂▃▃▂▂▃▃▂▂▃▃▇▇▇█▇9.8228.3839.3749.0047.7038.2247.7469.6559.128.1747.5758.466104.79487.119128.248157.253100.87890.247100.3161.04116.246101.011133.668149.34399.319103.642133.016141.91990.33490.576127.5134.4396.6412.0412.5474.8414.0NA414.5NANA
us-gaap:OperatingLeaseLiabilityCurrent ▃▁█1.3081.3031.318NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent ▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▃▂▂▂▃▂▂▂▃▂▂▂▃▇▇███6.6756.6278.8877.8067.9377.336.5167.1686.4367.2458.05510.96430.53726.63431.14130.5627.39525.37328.11245.2734.24836.08336.96441.32537.86832.83635.87740.41830.5127.36633.240.8141.5139.9160.7157.0155.6NA140.6NANA
us-gaap:ContractWithCustomerLiabilityCurrent ███▂▂▂▃▄▁▆▆0.9410.9420.9440.7260.7060.7180.7540.790.6850.860.86NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:LongTermDebtNoncurrent ▁▁▁▁▁▁▁▁▁▂▂▂▃▄▄▄▄▅▅▅▅▅▅▄▄▅▄▄▄▄▄▅▆▂▄▅█22.48222.64917.1487.2847.5037.4486.3676.84914.94634.68742.02157.57399.918125.313120.295130.524143.471157.468160.113158.65166.239164.935191.431138.958147.257168.069152.431129.123129.687123.839135.4158.4207.863.5129.1188.4300.8NA355.3NANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ██▄▁18.34518.57312.3387.361NANA2.846NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▁▂▂▁▁▁▁▁▁▁▁▁▂▃▃▃▃▇▇█▆▇7.8838.3228.8079.3659.71110.06710.42910.5510.91711.29311.82712.92413.38613.78314.27112.36112.74713.08810.0469.7119.83110.49810.6167.3127.3557.4097.64815.46623.16623.73524.424.572.275.781.056.267.3NA77.8NANA
us-gaap:OtherLiabilitiesNoncurrent ▁▁▁▁▁▁▂▂▁▁▁▁▄▄▄▄▄▄▄▄▄▄▅▅▅▄▄▄▄▄▄▃██▇██8.5097.6828.16.6966.8566.7215.58115.20213.97513.62912.33611.11351.79450.64253.07253.44651.06151.85652.58553.1652.11252.16264.91966.63266.01360.12259.42855.02551.89450.55551.645.6114.2112.3110.4119.1117.9NA113.5NANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▁▅█11.78212.11712.448NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:StockholdersEquity ▃▃▃▃▂▂▂▂▂▂▂▁▂▂▂▁▁▁▁▁▁▁▁▂▂▃▃▂▂▃▃▃██▇▇▇299.271293.837289.392283.255272.15264.267250.704240.201230.972224.882219.448207.063230.96224.526220.293196.308198.972202.019201.138184.744192.094202.95211.474269.242274.787289.543297.78275.721268.026280.493281.4291.1615.9609.9576.2547.1540.5NA447.4NANA
us-gaap:AdditionalPaidInCapitalCommonStock ▇▇▇█▇▆▆▆▅▄▄▃▁▁▁8.9428.3188.9119.8297.7346.5737.0426.3415.2694.5374.4472.2190.00.00.0NA0.00.7120.0NA0.00.00.00.00.00.00.9410.3674.18520.03524.524.924.323.222.724.824.1NA22.6NANA
us-gaap:RetainedEarningsAccumulatedDeficit ▂▂▂▂▂▂▂▂▁▁▁▁▂▂▂▁▁▁▁▁▁▁▁▂▂▂▃▃▃▃▃▃██▇▇▆294.378289.679284.852279.801270.865264.217250.352239.817231.761226.513216.49207.447248.239242.379239.441214.666217.728218.743217.745200.853206.4216.927224.428274.297279.922294.183301.227327.746318.885315.77313.6321.3657.6640.4619.7569.8548.5NA475.4NANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ███▇▇▇▇██▇██▆▆▆▆▆▆▆▆▇▇▇████▃▂▂▂▂▁▂▁-11.081-11.182-11.337-13.369-13.439-13.51-13.611-12.899-13.002-13.107-8.341-9.449-24.115-24.687-25.927-25.134-25.569-24.315-23.444-22.958-21.286-21.125-20.189-12.45-12.762-12.439-12.259-60.33-63.081-63.65-65.1-63.5-74.4-62.1-74.6NANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▁0.6340.465NA2.1241.2490.897NA1.3540.7920.177NANANANANANANANANANANANANANANANA0.5770.3650.3570.5082.00.40.7391.061-0.10.5NANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▂▅▆▆▄▅▆▆▄▅▇▇▁█▇▆▄█▅▅▇18.633-31.1225.5225.17622.632-0.54415.77120.15526.725-8.02914.18728.86540.457-42.20447.77729.18920.788-3.81948.1889.93312.40937.472NANANANANANANANANANA49.22.5103.9-4.664.7-8.858.7-35.0NA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▇▅▇█▇▇▇▇█▇▇█▇██▇▇█▇██▂▇▆▁▁▄▇▇-9.302-5.342-11.453-2.857-1.705-4.247-4.965-5.142-6.192-2.088-4.356-4.641-2.172-3.8360.112-1.323-5.283-3.323-1.967-3.26-1.542-1.522-27.637-6.497-8.898-31.902-31.884-16.135-6.087-6.628NA-53.299-17.315.1-7.4-9.5-10.0-5.8-6.98.4NA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▇▇▆▆▆▆▅▄▆▆▇▄█▅▅▅▆▆▅▅▁-7.5117.29813.764-5.681-1.562-1.408-8.599-11.915-23.984-8.08-2.16912.612-34.21421.465-11.352-17.862-16.844-9.652-5.577-14.151-20.816-67.757NANANANANANANANANANA-40.5-44.328.7-65.9-3.8-1.0-4.2-31.4NA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect █▁1.82-29.166NA16.63819.365-6.199NA3.098-3.451-18.197NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▂▅▆▆▄▅▆▆▄▅▇▇▁█▇▆▄█▅▅▇18.633-31.1225.5225.17622.632-0.54415.77120.15526.725-8.02914.18728.86540.457-42.20447.77729.18920.788-3.81948.1889.93312.40937.472NANANANANANANANANANA49.22.5103.9-4.664.7-8.858.7-35.0NA
us-gaap:NetIncomeLoss ▄▄▄▄▄▅▄▄▄▄▄▄▄▄▅▄▄▄▅▄▄▄▁▄▄▄▅▅▄▄▅▆▅▅▇▅▅█▆▅▅6.056.1666.37510.2647.97515.01811.0169.26.3938.17610.1728.3986.7884.97824.131-0.4423.1162.80218.0913.141-0.2751.027-40.6697.699-3.624-1.52422.55612.3255.1474.42223.738.021.825.254.425.719.262.838.413.515.9
us-gaap:DepreciationDepletionAndAmortization ▅▅▅▅▅▅▅▅▅▅▅▄▅▅▅▅▅▅▆▆▆▆▆▆▆▆▆▆▅▅▆▁▇▇██▇▇██4.6244.5444.1454.0444.2383.8133.7483.8153.7243.3973.1870.6754.4174.4885.3535.2154.5164.1926.3435.7785.8015.7588.6256.8486.6185.9798.1956.1684.8375.3726.6-9.210.310.312.212.611.411.513.612.4NA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▇▅▇█▇▇▇▇█▇▇█▇██▇▇█▇██▂▇▆▁▁▄▇▇-9.302-5.342-11.453-2.857-1.705-4.247-4.965-5.142-6.192-2.088-4.356-4.641-2.172-3.8360.112-1.323-5.283-3.323-1.967-3.26-1.542-1.522-27.637-6.497-8.898-31.902-31.884-16.135-6.087-6.628NA-53.299-17.315.1-7.4-9.5-10.0-5.8-6.98.4NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▃▂▃▃▁▂▂▂▂▂▂▁▂▂▂▂▂▂▂▂▁▂▃▂▃▇█▃▂▃▂▁█▂▃▃▃▂▃▃7.4415.35811.47.2971.7154.2526.2985.456.732.4526.4931.1123.4494.654.4782.9954.3354.3593.1313.3321.7662.3869.8376.4839.33531.84532.54411.0896.3517.4655.0-0.634.85.510.49.810.36.28.67.3NA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▇▇▆▆▆▆▅▄▆▆▇▄█▅▅▅▆▆▅▅▁-7.5117.29813.764-5.681-1.562-1.408-8.599-11.915-23.984-8.08-2.16912.612-34.21421.465-11.352-17.862-16.844-9.652-5.577-14.151-20.816-67.757NANANANANANANANANANA-40.5-44.328.7-65.9-3.8-1.0-4.2-31.4NA
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▂█▃▁▂▃▁▂▁▃0.076.2320.935-0.1530.0121.206-0.3630.068-0.5781.269NA-6.1860.7325.461NA0.0-0.1370.137NA0.5-0.8292.876NA0.00.01.553NA-0.257-1.0252.793NA-138.9159.24.74.53.85.03.310.32.1NA
us-gaap:RepaymentsOfLongTermDebt ▄▄▄▄▄▄▄▄▅▄▄▄▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁█▅▄▅▄▄▄▄0.230.5930.2440.1750.1620.1616.15910.55522.2068.205-28.96110.19424.3820.43217.00412.93713.8512.7723.9821.5720.3650.3637.3990.291.3560.3544.041-3.5025.13210.1327.9-223.1257.420.311.964.96.87.215.914.2NA
us-gaap:PaymentsOfDividends ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▂▂▂▂▂▂▂▂▂1.3511.3391.3241.3281.3271.1531.1451.1441.1451.1441.131.8621.8631.8271.8121.8121.8341.8041.7941.8141.8381.851.8711.9271.9931.9641.9711.9992.0322.10231.44.64.64.54.54.44.54.44.44.3NA
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▅█▁▁▇▅▂▁▁▁▁0.01.0021.60.0250.0851.30.9550.2840.0550.00.00.0NANA0.02.2183.8260.00.7627.2399.0986.9118.62812.29.2614.9863.9515.74716.5085.12.60.00.00.62.10.00.00.0NANANA
  2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30

None

us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonClassA


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5463800.05452800.05397500.05425600.05421100.05417900.05352600.05373400.05374700.05369300.05282100.05276000.05266300.05263300.05208000.05205300.05240800.05307700.05265400.05277000.05407100.05574800.05662200.05821100.06046200.06218300.06290400.06357000.06454800.06756500.06770700.06804000.06799100.06795400.06778300.06800600.06798500.06737200.0
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:CommonClassB


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1568600.01568600.01568700.01568700.01568800.01568800.01568800.01569200.01569400.01569700.01570100.01570100.01570400.01570500.01570900.01571200.01571500.01571500.01571700.01572000.01572600.01572600.01573300.01573800.01580600.01580900.01581100.01581400.01581800.01582200.01582300.01590300.01590400.01592600.01595600.01595800.01595800.01596100.0
Percentage of CommonStockSharesOutstanding28.728.829.128.928.929.029.329.229.229.229.729.829.829.830.230.230.029.629.829.829.128.227.827.026.125.425.124.924.523.423.423.423.423.423.523.523.523.7

None

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value7024000.07040000.06991000.06986000.06998000.06940000.06940000.06939000.06866000.06850000.06843000.06786000.06874000.06885000.06935000.07048000.07208000.07533000.07718000.07860000.07996000.08184000.08399000.08409000.08400000.08394000.08416000.08407000.08399000.08346000.08338000.0
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value7024000.07000000.06991000.06986000.06949000.06940000.06940000.06894000.06839000.06835000.06806000.06786000.06856000.06857000.06924000.07048000.07189000.07515000.07712000.07848000.07988000.08179000.08360000.08391000.08388000.08379000.08395000.08393000.08363000.08332000.08331000.0
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.860.880.911.471.142.161.591.330.921.191.481.230.990.733.56-0.070.450.412.650.45-0.040.14-5.571.02-0.47-0.192.861.540.630.532.834.532.63.016.483.062.297.514.611.621.91
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

None

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.860.880.91.471.142.151.571.330.921.181.471.230.990.733.53-0.070.450.412.630.45-0.040.14-5.571.02-0.47-0.192.851.540.630.532.814.522.63.06.473.052.287.484.61.621.91
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

None

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value35372632414039313331262128168284220178173286239196193297221200177311228196196318210773803273823811745866664598
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
Percentage of Revenues100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.015.5100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems

srt:ConsolidationEliminations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.58-0.175-0.204-0.263-0.319-0.657-0.806-0.137-0.112-0.086
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.6-0.5-0.8-0.8-0.8-1.6-2.1-0.4-0.3-0.3
Percentage of Revenues-1.6-0.50.0-0.8-0.8-1.60.0-0.4-0.3-0.3
Percentage of Revenues srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.3270.0260.0640.0520.1310.5430.6650.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.10.20.20.31.41.70.00.00.0
Percentage of Revenues0.90.10.00.20.31.40.00.00.00.0
Percentage of Revenues us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nacco:CoalMining


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value21201018221624182017
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.055.639.357.754.641.862.859.161.956.4
Percentage of Revenues61.055.60.057.754.641.80.059.161.956.4
Percentage of Revenues us-gaap:OperatingSegments nacco:CoalMining0.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nacco:MineralsManagement


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.9875.2414.1695.0228.242126.1083.9023.8663.476
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.613.915.515.419.931.615.612.411.511.1
Percentage of Revenues5.613.90.015.419.931.60.012.411.511.1
Percentage of Revenues us-gaap:OperatingSegments nacco:MineralsManagement0.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nacco:NorthAmericanMining


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1211128.99310108.5789.0929.06710
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.130.945.827.625.926.922.028.926.932.7
Percentage of Revenues34.130.90.027.625.926.90.028.926.932.7
Percentage of Revenues us-gaap:OperatingSegments nacco:NorthAmericanMining0.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TimingOfTransferOfGoodOrService

us-gaap:TransferredAtPointInTime


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value20201018211623172017
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax59.353.937.555.452.940.160.657.259.954.6
Percentage of Revenues59.353.90.055.452.940.10.057.259.954.6
Percentage of Revenues us-gaap:TransferredAtPointInTime0.00.00.00.00.00.00.00.00.00.0

us-gaap:TransferredOverTime


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value14171614192415131314
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax40.746.162.544.647.159.939.442.840.145.4
Percentage of Revenues40.746.10.044.647.159.90.042.840.145.4
Percentage of Revenues us-gaap:TransferredOverTime0.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value183187177187205182183203174194178160145154155148150148138152141139144135134131118
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax486.3575.1430.2467.0654.7540.4586.7925.8621.2115.280.690.083.764.678.976.467.973.978.166.972.171.268.617.516.715.914.6
Percentage of Revenues486.3575.1430.2467.0654.7540.4586.7925.896.4115.280.690.083.764.678.976.467.973.978.166.972.171.268.617.516.715.914.6
Percentage of Revenues us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:Revenues

us-gaap:Revenues


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value353726324140393133312621181168284220178173286239196193297221200177311228196196318210773803273823811745866664598
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 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

None

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value313226322625252825211923633658770685673608698534475
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues89.186.581.079.066.665.280.685.682.680.088.713.081.982.0281.283.383.081.780.780.479.4

None

us-gaap:GrossProfit

us-gaap:GrossProfit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.845.0812.8886.1878.66813136.0954.8465.4245.2892.4754339735140406342353865463636784947468452140144181137137136167130123
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.913.510.719.021.033.434.819.414.417.420.011.324.023.225.923.422.823.122.217.718.019.722.121.018.220.425.121.524.323.626.624.918.118.066.116.717.018.319.319.620.6

us-gaap:GrossProfit us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


None
Period End2020-06-302019-06-30
Value1514
Percentage of GrossProfit395.2168.8
Percentage of Revenues42.935.4
Percentage of Revenues us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.0

us-gaap:GrossProfit us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value162014192220212319212119181818181917191817191918191616
Percentage of GrossProfit326.1324.2168.8143.0366.8421.1389.8934.445.756.241.348.546.942.951.149.441.946.953.938.336.842.136.313.013.312.012.1
Percentage of Revenues44.061.535.447.771.160.667.8105.411.013.09.711.110.87.69.29.78.88.511.08.28.99.99.02.42.42.02.1
Percentage of Revenues us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.00.00.00.00.011.611.411.411.312.012.312.911.711.612.713.011.614.112.312.414.013.213.514.312.614.1

None

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value1313141413131412121115114646576648475348464715147514961444951584911949123111116122109105
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues37.235.953.145.933.033.138.240.437.036.158.753.225.627.720.329.927.227.218.820.423.524.550.921.325.927.719.719.425.126.218.523.315.46.245.113.514.314.216.417.6

None

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1212141412121412111015114745564747465447454652465048574348506052121118124111116113121105104
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues35.633.852.044.030.931.637.638.335.234.159.353.426.527.219.921.526.726.719.119.923.024.017.820.925.427.318.518.924.726.019.024.815.714.845.413.514.415.214.015.817.5

None

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value4.4827.584.6238.6639.1611615107.8029.7216.5066.989107.368300.6995.215.412215.761.2883.241-73.15611-3.891-0.58528168.8037.0223714313742373135563227
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues12.720.117.226.622.240.839.833.523.231.224.631.95.84.410.70.32.93.17.52.40.71.7-24.65.1-1.9-0.39.27.34.53.611.67.04.14.715.44.53.84.76.54.84.6

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems

srt:ConsolidationEliminations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.088-0.0430.0990.0990.292-0.234-0.4220.00.00.0
Percentage of OperatingIncomeLoss2.0-0.62.11.13.2-1.4-2.70.00.00.0
Percentage of Revenues0.2-0.10.40.30.7-0.6-1.10.00.00.0
Percentage of Revenues srt:ConsolidationEliminations0.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-4.158-4.56-2.614-2.286-2.13-2.699-5.582-1.61-1.72-1.561-1.936-1.364-1.52
Percentage of OperatingIncomeLoss-92.8-60.2-56.5-26.4-23.3-16.5-35.9-15.3-22.0-16.1-27.7-12.9-20.6
Percentage of Revenues-11.8-12.1-9.7-7.0-5.2-6.7-14.3-5.1-5.1-5.0-8.8-0.8-0.9
Percentage of Revenues us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nacco:CoalMining


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7.4987.1853.6297.3414.6937.605119.8147.8988.697
Percentage of OperatingIncomeLoss167.394.878.584.751.246.476.393.1101.289.5
Percentage of Revenues21.219.113.522.511.319.030.431.223.427.9
Percentage of Revenues us-gaap:OperatingSegments nacco:CoalMining0.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nacco:MineralsManagement


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.514.2673.3633.96.789115.4052.773.2122.944
Percentage of OperatingIncomeLoss11.456.372.745.074.171.334.726.341.230.3
Percentage of Revenues1.411.312.512.016.429.113.88.89.59.4
Percentage of Revenues us-gaap:OperatingSegments nacco:MineralsManagement0.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nacco:NorthAmericanMining


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.5440.7310.146-0.391-0.4830.0320.8460.2810.1570.634
Percentage of OperatingIncomeLoss12.19.63.2-4.5-5.30.25.42.72.06.5
Percentage of Revenues1.51.90.5-1.2-1.20.12.20.90.52.0
Percentage of Revenues us-gaap:OperatingSegments nacco:NorthAmericanMining0.00.00.00.00.00.00.00.00.00.0

None

us-gaap:InterestExpense

us-gaap:InterestExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.330.4030.1890.230.2220.2310.3620.4210.5690.6460.6340.9461.391.3471.3951.3221.471.5051.5411.5971.6612.1252.1162.0461.951.4541.2791.0441.1481.3041.41.54.95.55.86.46.16.26.77.06.9
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.91.10.70.70.50.60.91.31.72.12.44.30.80.80.50.60.80.90.50.70.81.10.70.91.00.80.40.50.60.70.40.70.60.72.10.80.80.80.81.11.2

None

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value102000.015000.0-709000.01258000.0-11000.0-11000.0-267000.0483000.0373000.0-31000.087000.0-64000.0326000.0702000.0-471000.0-447000.0-2017000.0-53000.0-5000.0-908000.0167000.0-479000.0-342000.0-86000.0273000.0-122000.061000.0-174000.0-476000.0133000.0200000.0300000.0-1100000.01400000.0-3300000.0900000.01300000.0700000.0-1000000.0400000.01000000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.30.0-2.63.9-0.0-0.0-0.71.51.1-0.10.3-0.30.20.4-0.2-0.2-1.1-0.0-0.0-0.40.1-0.2-0.1-0.00.1-0.10.0-0.1-0.20.10.10.1-0.10.2-1.20.10.20.1-0.10.10.2

None

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


None
Period End2020-06-302019-06-30
Value1314
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0
Percentage of Revenues39.035.1
Percentage of Revenues us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:VariableInterestEntitiesByClassificationOfEntity

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value161714161715161613151413131212131210131210121111121110
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest0.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Revenues43.154.735.141.755.445.951.775.77.59.36.77.47.65.36.46.85.55.57.45.35.56.55.71.41.61.41.3
Percentage of Revenues us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.00.00.00.00.08.88.27.88.18.38.39.08.18.18.98.17.49.58.07.69.28.38.19.48.78.6

None

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.102-1.4840.0542.9580.6020.965-0.610.111-0.221-0.741-0.752-1.033-1.105-0.72-0.396-1.685-3.533-1.631-1.09-2.485-1.619-1.834-4.098-2.257-2.405-1.504-1.673-1.198-1.56-1.185-4.2-1.2-6.0-4.1-1.7-5.5-4.851-11.2-12.7-10.4
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues3.1-3.90.29.11.52.4-1.60.4-0.7-2.4-2.8-4.7-0.6-0.4-0.1-0.8-2.0-0.9-0.4-1.0-0.8-0.9-1.4-1.0-1.2-0.8-0.5-0.5-0.8-0.6-1.3-0.6-0.8-0.5-0.6-0.7-0.66.9-1.3-1.9-1.7

None

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-0.466-0.07-1.6981.3571.7882.323.9281.4581.1880.804-3.9252.6252.6881.675.867-0.544-1.4390.9792.3570.134-0.0560.38-36.5851.367-2.672-0.5654.63.1592.0961.4159.13.43.78.5146.27.2247.06.10.9
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-1.3-0.2-6.34.24.35.810.14.63.52.6-14.812.01.51.02.1-0.2-0.80.60.80.1-0.00.2-12.30.6-1.3-0.31.51.41.10.72.91.60.51.15.10.80.93.20.80.90.2

None

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-31
Value0.1010.1550.070.0710.1010.1030.1050.140.1440.5721.240.435-1.254-0.871-1.672-0.161-0.9360.312-0.323-0.184.5782.7510.5690.84310
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.30.40.20.20.30.30.30.40.70.30.70.2-0.7-0.5-0.7-0.1-0.50.1-0.2-0.11.51.20.30.41.3

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.056.1666.375107.97515119.26.3938.176108.3986.7884.97824-0.4423.1162.802183.141-0.2751.027-40.6697.699-3.624-1.52422125.1474.4222338212554251962381315
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 Revenues17.116.423.731.519.337.528.229.319.026.238.538.33.73.08.5-0.21.81.66.31.3-0.10.5-13.73.5-1.8-0.97.25.42.62.37.418.12.83.119.93.12.48.44.42.02.7

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value6.056.166107.97515119.26.3938.176108.3986.7884.97824-0.4423.1162.802183.141-0.2751.027-40.6697.699-3.624-1.52422125.1474.42223382125542519623813
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues17.116.431.519.337.528.229.319.026.238.538.33.73.08.5-0.21.81.66.31.3-0.10.5-13.73.5-1.8-0.97.25.42.62.37.418.12.83.119.93.12.48.44.42.0
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.1516.3218.407108.04615109.3036.4988.316118.5427.366.21823-0.0071.8621.931171.469-0.4360.091-48.4088.011-3.947-1.70427155.7165.85622489.5373510287237262.3
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues17.416.831.231.719.537.727.829.619.326.742.738.94.13.78.2-0.01.01.16.10.6-0.20.0-16.33.6-2.0-1.08.86.62.93.06.923.31.24.713.01.33.59.74.43.90.4

None

us-gaap:Assets

us-gaap:Assets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value442435444412399393376366366374389384621620668664609606655702651653770829788780809778698713776822170417491801175717541658
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:Liabilities

us-gaap:Liabilities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value143142155129127129126126135149170177390395447467410404454517459450559559514490512502430433494530108811391224120912131210
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets32.432.634.931.431.832.933.534.536.939.943.746.262.863.867.070.467.466.769.373.770.569.072.667.565.262.963.264.661.660.763.864.663.865.168.068.869.273.0

None

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value442435444412399393376366366374389384621620668664609606655702651653770829788780809778698713776822170417491801175717541658
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value299293289283272264250240230224219207230224220196198202201184192202211269274289297275268280281291615609576547540447
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets67.667.465.168.668.267.166.565.563.160.156.353.837.236.233.029.632.633.330.726.329.531.027.432.534.837.136.835.438.439.336.235.436.134.932.031.130.827.0

us-gaap:StockholdersEquity us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5.4635.4535.3975.4255.4215.4185.3525.3735.3755.3695.282
Percentage of StockholdersEquity1.81.91.91.92.02.12.12.22.32.42.4
Percentage of Assets1.21.31.21.31.41.41.41.51.51.41.4
Percentage of Assets us-gaap:CommonClassA us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB, us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.5691.5691.5691.5691.5691.5691.5691.5691.5691.571.57
Percentage of StockholdersEquity0.50.50.50.60.60.60.60.70.70.70.7
Percentage of Assets0.40.40.40.40.40.40.40.40.40.40.4
Percentage of Assets us-gaap:CommonClassB us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-11.081-11.182-11.337-13.369-13.439-13.51-13.611-12.899-13.002-13.107-11.068
Percentage of StockholdersEquity-3.7-3.8-3.9-4.7-4.9-5.1-5.4-5.4-5.6-5.8-5.0
Percentage of Assets-2.5-2.6-2.5-3.2-3.4-3.4-3.6-3.5-3.6-3.5-2.8
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value8.9428.3188.9119.8297.7346.5737.0426.3415.2694.5374.447
Percentage of StockholdersEquity3.02.83.13.52.82.52.82.62.32.02.0
Percentage of Assets2.01.92.02.41.91.71.91.71.41.21.1
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value294289284279270264250239231226216
Percentage of StockholdersEquity98.498.698.498.899.5100.099.999.8100.3100.798.7
Percentage of Assets66.566.564.067.867.967.166.465.463.360.555.6
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value190188200180175164164151152162176164343330381384320315361411359355465450406403461454392406486509127413411375133113111214
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets43.143.345.143.744.041.743.541.341.643.445.442.755.453.357.157.952.752.155.158.555.254.360.454.351.551.757.058.556.257.062.761.974.776.776.375.774.773.2

None

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value959312211598798583798310193605680443435521119296150607095798596139155303314338217301249261215270256138
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 Assets21.621.527.627.924.720.122.622.721.822.326.124.49.79.112.16.75.65.98.01.73.04.57.96.17.79.011.810.212.213.618.018.917.818.018.812.417.20.015.80.00.00.00.0

None

us-gaap:InventoryNet

us-gaap:InventoryNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value353540333032313329303030163158157201167164165234203187190220188193184207167162169205474477470540491447
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.18.39.18.07.78.38.39.18.08.07.77.926.425.623.630.327.527.125.233.331.228.624.726.623.924.922.826.624.022.721.825.027.927.326.130.828.027.0

None

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


None
Period End2020-06-302019-12-31
Value196.528
Percentage of OtherAssetsCurrent100.0100.0
Percentage of Assets4.31.5

None

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value792000.0777000.0357000.0715000.0881000.0647000.0826000.0714000.0814000.0684000.0482000.0435000.0964000.0932000.0928000.01164000.0826000.0982000.0814000.01138000.0950000.01085000.0633000.0911000.0991000.0765000.0932000.01076000.0619000.01041000.0960000.0767000.0464000.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3637373838394041424243445152525355555657585960575758596061626371565757585960
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.28.58.59.39.810.110.711.311.511.511.211.48.28.47.98.19.09.28.78.29.09.17.96.97.37.67.47.88.88.78.28.73.33.33.23.33.43.6

None

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


None
Period End2020-06-302020-03-312019-12-31
Value101111
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0
Percentage of Assets2.42.52.6

None

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value36312829242524232322232226262671646256596064626970716964545436409594110108109108
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.37.36.37.26.26.46.56.46.46.05.95.94.24.34.010.710.710.38.68.59.49.98.18.48.99.28.68.37.87.64.74.95.65.46.16.26.26.5

None

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:EquitySecuritiesFvNi

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value128.947109.5889.4459.4548.7169.4619.2859.166
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.82.12.32.32.42.42.32.62.52.4
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value128.947109.5889.4459.4548.7169.4619.2859.166
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.82.12.32.32.42.42.32.62.52.4
Percentage of Assets us-gaap:EstimateOfFairValueFairValueDisclosure us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.00.00.0

None

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value393861525349424445405343186167221229161140191255192185254287234202238250173181227243690870891842719663
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.98.713.912.813.312.611.212.112.510.913.911.229.927.033.234.626.523.229.336.429.628.333.134.729.725.929.432.224.825.429.329.740.549.749.547.941.040.0

None

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value0.9410.9330.7950.3940.4990.5730.6540.6471.0371.0811.1251.1681.2121.7571.7441.5321.5231.5131.5041.4951.4851.4761.4677.8867.8777.8687.8597.856.9696.9657.07.0372291781247322
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.10.10.10.20.20.30.30.30.30.20.30.30.20.20.20.20.20.20.20.21.01.01.01.01.01.01.00.90.92.213.19.97.14.21.4

None

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value9.8228.3839.3749.0047.7038.2247.7469.6559.128.1747.5758.4661048712815710090100161116101133149991031331419090127134396412412474414414
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.21.92.12.21.92.12.12.62.52.21.92.216.914.019.223.716.614.915.322.917.815.517.318.012.613.316.418.212.912.716.416.423.323.522.927.023.625.0

None

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


None
Period End2020-06-302020-03-312019-12-31
Value1308000.01303000.01318000.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0
Percentage of Assets0.30.30.3

None

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value6.6756.6278.8877.8067.9377.336.5167.1686.4367.2458.055103026313027252845343636413732354030273340141139160157155140
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.52.01.92.01.91.72.01.81.92.12.84.94.34.74.64.54.24.36.45.35.54.85.04.84.24.45.24.43.84.35.08.38.08.98.98.98.5

None

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value941000.0942000.0944000.0726000.0706000.0718000.0754000.0790000.0685000.0860000.0860000.0
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.20.20.20.20.20.20.20.2

None

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2222177.2847.5037.4486.3676.849143442579912512013014315716015816616419113814716815212912912313515820763129188300355
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.15.23.91.81.91.91.71.94.19.310.815.016.120.218.019.723.526.024.422.625.525.224.816.818.721.518.816.618.617.417.419.312.23.67.210.717.121.4

None

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


None
Period End2020-06-302020-03-312019-12-312019-09-302018-12-31
Value1818127.3612.846
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0
Percentage of Assets4.14.32.81.80.8

None

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value7.8838.3228.8079.3659.71110101010111112131314121213109.7119.83110107.3127.3557.4097.6481523232424727581566777
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.92.02.32.42.62.82.93.03.03.03.42.22.22.11.92.12.21.51.41.51.61.40.90.90.90.92.03.33.33.13.04.24.34.53.23.84.7

None

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8.5097.6828.16.6966.8566.721515131312115150535351515253525264666660595551505145114112110119117113
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.91.81.81.61.71.74.14.13.83.63.22.98.38.27.98.08.48.58.07.68.08.08.48.08.47.77.37.17.47.16.65.56.76.46.16.86.76.8

None

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


None
Period End2020-06-302020-03-312019-12-31
Value111212
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0
Percentage of Assets2.72.82.8

None

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value299293289283272264250240230224219207230224220196198202201184192202211269274289297275268280281291615609576547540447
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets67.667.465.168.668.267.166.565.563.160.156.353.837.236.233.029.632.633.330.726.329.531.027.432.534.837.136.835.438.439.336.235.436.134.932.031.130.827.0

us-gaap:StockholdersEquity us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5.4635.4535.3975.4255.4215.4185.3525.3735.3755.3695.282
Percentage of StockholdersEquity1.81.91.91.92.02.12.12.22.32.42.4
Percentage of Assets1.21.31.21.31.41.41.41.51.51.41.4
Percentage of Assets us-gaap:CommonClassA us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB, us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.5691.5691.5691.5691.5691.5691.5691.5691.5691.571.57
Percentage of StockholdersEquity0.50.50.50.60.60.60.60.70.70.70.7
Percentage of Assets0.40.40.40.40.40.40.40.40.40.40.4
Percentage of Assets us-gaap:CommonClassB us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-11.081-11.182-11.337-13.369-13.439-13.51-13.611-12.899-13.002-13.107-11.068
Percentage of StockholdersEquity-3.7-3.8-3.9-4.7-4.9-5.1-5.4-5.4-5.6-5.8-5.0
Percentage of Assets-2.5-2.6-2.5-3.2-3.4-3.4-3.6-3.5-3.6-3.5-2.8
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value8.9428.3188.9119.8297.7346.5737.0426.3415.2694.5374.447
Percentage of StockholdersEquity3.02.83.13.52.82.52.82.62.32.02.0
Percentage of Assets2.01.92.02.41.91.71.91.71.41.21.1
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value294289284279270264250239231226216
Percentage of StockholdersEquity98.498.698.498.899.5100.099.999.8100.3100.798.7
Percentage of Assets66.566.564.067.867.967.166.465.463.360.555.6
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302016-03-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8.9428.3188.9119.8297.7346.5737.0426.3415.2694.5374.4472.2190.00.00.00.00.7120.00.00.00.00.00.00.00.9410.3674.185202424242322242422
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.01.92.02.41.91.71.91.71.41.21.10.60.00.00.00.00.10.00.00.00.00.00.00.00.10.00.62.83.23.01.41.31.31.41.41.4

None

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value294289284279270264250239231226216207248242239214217218217200206216224274279294301327318315313321657640619569548475
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.566.564.067.867.967.166.465.463.360.555.653.940.039.135.832.335.736.133.228.631.733.229.133.135.537.737.242.145.744.240.439.138.636.634.432.431.328.7

None

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value-11081000.0-11182000.0-11337000.0-13369000.0-13439000.0-13510000.0-13611000.0-12899000.0-13002000.0-13107000.0-8341000.0-9449000.0-24115000.0-24687000.0-25927000.0-25134000.0-25569000.0-24315000.0-23444000.0-22958000.0-21286000.0-21125000.0-20189000.0-12450000.0-12762000.0-12439000.0-12259000.0-60330000.0-63081000.0-63650000.0-65100000.0-63500000.0-74400000.0-62100000.0-74600000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-2.5-2.6-2.5-3.2-3.4-3.4-3.6-3.5-3.6-3.5-2.1-2.5-3.9-4.0-3.9-3.8-4.2-4.0-3.6-3.3-3.3-3.2-2.6-1.5-1.6-1.6-1.5-7.8-9.0-8.9-8.4-7.7-4.4-3.5-4.1

None

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value634000.0465000.02124000.01249000.0897000.01354000.0792000.0177000.0577000.0365000.0357000.0508000.02000000.0400000.0739000.01061000.0-100000.0500000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:CommonStock


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value10000.088000.05000.05000.0102000.08000.06000.07000.087000.06000.010000.02000.055000.03000.02000.04000.042000.05000.03000.03000.034000.02000.04000.03000.019000.03000.02000.03000.075000.04000.05000.01000.020000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue1.618.90.20.411.40.00.40.949.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.50.50.814.80.21.20.11.9
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassA us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value624000.0377000.02119000.01244000.0795000.01627000.01348000.0785000.090000.02228000.02219000.0002456000.01371000.0747000.0712000.01340000.0231000.0513000.0112000.01137000.0567000.0442000.0398000.0574000.0363000.0354000.0433000.02000000.0400000.0900000.0900000.0-100000.0500000.0600000.0700000.04800000.0500000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue98.481.199.899.688.60.099.699.150.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.099.599.599.285.2100.0100.0121.884.8100.0100.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value18-31.1225.522522-0.544152026-8.029142840-42.204472920-3.819489.9331237492.5103-4.664-8.858-35.0
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues52.7-82.720.577.254.7-1.440.464.179.3-25.753.7131.622.3-25.016.813.211.7-2.216.84.26.319.36.40.337.9-0.68.0-1.26.8-5.3

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-9.302-5.342-11.453-2.857-1.705-4.247-4.965-5.142-6.192-2.088-4.356-4.641-2.172-3.8360.112-1.323-5.283-3.323-1.967-3.26-1.542-1.522-27.637-6.497-8.898-31.902-31.884-16.135-6.087-6.628-53.299-17.315-7.4-9.5-10.0-5.8-6.98.4
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-26.3-14.2-42.5-8.8-4.1-10.6-12.7-16.4-18.4-6.7-16.5-21.2-1.2-2.30.0-0.6-3.0-1.9-0.7-1.4-0.8-0.8-9.3-2.9-4.4-18.0-10.2-7.1-3.1-3.4-25.4-2.21.9-2.7-1.2-1.2-0.8-0.81.3

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-7.5117.29813-5.681-1.562-1.408-8.599-11.915-23.984-8.08-2.16912-34.21421-11.352-17.862-16.844-9.652-5.577-14.151-20.816-67.757-40.5-44.328-65.9-3.8-1.0-4.2-31.4
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-21.219.451.1-17.4-3.8-3.5-22.0-37.9-71.2-25.9-8.257.5-18.912.7-4.0-8.1-9.5-5.6-1.9-5.9-10.6-35.0-5.2-5.510.5-8.0-0.5-0.1-0.5-4.7

None

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1.82-29.1661619-6.1993.098-3.451-18.197
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues5.1-77.551.046.8-15.59.9-10.2-58.3

None

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value18-31.1225.522522-0.544152026-8.029142840-42.204472920-3.819489.9331237492.5103-4.664-8.858-35.0
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues52.7-82.720.577.254.7-1.440.464.179.3-25.753.7131.622.3-25.016.813.211.7-2.216.84.26.319.36.40.337.9-0.68.0-1.26.8-5.3

None

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.056.1666.375107.97515119.26.3938.176108.3986.7884.97824-0.4423.1162.802183.141-0.2751.027-40.6697.699-3.624-1.52422125.1474.4222338212554251962381315
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 Revenues17.116.423.731.519.337.528.229.319.026.238.538.33.73.08.5-0.21.81.66.31.3-0.10.5-13.73.5-1.8-0.97.25.42.62.37.418.12.83.119.93.12.48.44.42.02.7

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value6.056.166107.97515119.26.3938.176108.3986.7884.97824-0.4423.1162.802183.141-0.2751.027-40.6697.699-3.624-1.52422125.1474.42223382125542519623813
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues17.116.431.519.337.528.229.319.026.238.538.33.73.08.5-0.21.81.66.31.3-0.10.5-13.73.5-1.8-0.97.25.42.62.37.418.12.83.119.93.12.48.44.42.0
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

None

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value4.6244.5444.1454.0444.2383.8133.7483.8153.7243.3973.1870.6754.4174.4885.3535.2154.5164.1926.3435.7785.8015.7588.6256.8486.6185.9798.1956.1684.8375.3726.6-9.21010121211111312
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.030.0280.1590.030.0290.0280.2690.0270.0270.027
Percentage of DepreciationDepletionAndAmortization0.60.63.80.70.70.77.20.70.70.8

us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nacco:CoalMining


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.6153.5433.1573.1023.2762.8742.8443.0973.0922.841
Percentage of DepreciationDepletionAndAmortization78.278.076.276.777.375.475.981.283.083.6

us-gaap:OperatingSegments, nacco:MineralsManagement


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.3270.3270.3050.3240.3670.3660.3890.250.1780.134
Percentage of DepreciationDepletionAndAmortization7.17.27.48.08.79.610.46.64.83.9

us-gaap:OperatingSegments, nacco:NorthAmericanMining


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.6520.6460.5240.5880.5660.5450.2460.4410.4270.395
Percentage of DepreciationDepletionAndAmortization14.114.212.614.513.414.36.611.611.511.6

None

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-9.302-5.342-11.453-2.857-1.705-4.247-4.965-5.142-6.192-2.088-4.356-4.641-2.172-3.8360.112-1.323-5.283-3.323-1.967-3.26-1.542-1.522-27.637-6.497-8.898-31.902-31.884-16.135-6.087-6.628-53.299-17.315-7.4-9.5-10.0-5.8-6.98.4
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-26.3-14.2-42.5-8.8-4.1-10.6-12.7-16.4-18.4-6.7-16.5-21.2-1.2-2.30.0-0.6-3.0-1.9-0.7-1.4-0.8-0.8-9.3-2.9-4.4-18.0-10.2-7.1-3.1-3.4-25.4-2.21.9-2.7-1.2-1.2-0.8-0.81.3

None

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value7.4415.358117.2971.7154.2526.2985.456.732.4526.4931.1123.4494.654.4782.9954.3354.3593.1313.3321.7662.3869.8376.4839.3353132116.3517.4655.0-0.6345.5109.8106.28.67.3
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.1580.0490.0130.0350.0420.1410.3750.1660.1730.17
Percentage of PaymentsToAcquirePropertyPlantAndEquipment2.10.90.10.52.43.36.03.02.66.9

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nacco:CoalMining


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.8440.8238.552.2911.6233.872.2282.1623.850.576
Percentage of PaymentsToAcquirePropertyPlantAndEquipment51.715.475.031.494.691.035.439.757.223.5

us-gaap:OperatingSegments, nacco:MineralsManagement


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.2760.4630.2260.00.050.2410.2240.00.151.032
Percentage of PaymentsToAcquirePropertyPlantAndEquipment3.78.62.00.02.95.73.60.02.242.1

us-gaap:OperatingSegments, nacco:NorthAmericanMining


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.1634.0232.6114.9710.00.03.4713.1222.5570.674
Percentage of PaymentsToAcquirePropertyPlantAndEquipment42.575.122.968.10.00.055.157.338.027.5

None

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-7.5117.29813-5.681-1.562-1.408-8.599-11.915-23.984-8.08-2.16912-34.21421-11.352-17.862-16.844-9.652-5.577-14.151-20.816-67.757-40.5-44.328-65.9-3.8-1.0-4.2-31.4
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-21.219.451.1-17.4-3.8-3.5-22.0-37.9-71.2-25.9-8.257.5-18.912.7-4.0-8.1-9.5-5.6-1.9-5.9-10.6-35.0-5.2-5.510.5-8.0-0.5-0.1-0.5-4.7

None

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.076.2320.935-0.1530.0121.206-0.3630.068-0.5781.269-6.1860.7325.4610.0-0.1370.1370.5-0.8292.8760.00.01.553-0.257-1.0252.793-138.91594.74.53.85.03.3102.1
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.230.5930.2440.1750.1620.1616.15910228.205-28.96110240.4321712132.7723.9821.5720.3650.3637.3990.291.3560.3544.041-3.5025.132107.9-223.12572011646.87.21514
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1.3511.3391.3241.3281.3271.1531.1451.1441.1451.1441.131.8621.8631.8271.8121.8121.8341.8041.7941.8141.8381.851.8711.9271.9931.9641.9711.9992.0322.102314.64.64.54.54.44.54.44.44.3
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

None

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value0.01.0021.60.0250.0851.30.9550.2840.0550.00.00.00.02.2183.8260.00.7627.2399.0986.9118.628129.2614.9863.9515.747165.12.60.00.00.62.10.00.00.0
Percentage of PaymentsForRepurchaseOfCommonStock0.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.00.00.0

None

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value9593122115987985837983101
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nacco:EarningsOfUnconsolidatedMines

nacco:EarningsOfUnconsolidatedMines


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1316161714161617151516161314141513121112121212121112121110121111101212119.51212119.5
Percentage of EarningsOfUnconsolidatedMines100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nacco:NonoperatingIncomeExpenseClosedMineObligations

nacco:NonoperatingIncomeExpenseClosedMineObligations


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value390000.0434000.0458000.0383000.0330000.0366000.0-303000.0-272000.0-343000.0-379000.0-519000.0-336000.0-352000.0-383000.01162000.0-223000.0-349000.0-376000.0152000.0-244000.0-425000.0-402000.0-1642000.0-316000.0-308000.0-316000.0-874000.0-266000.0-272000.0-405000.0-3133000.0-273000.0-860000.0-334000.0
Percentage of NonoperatingIncomeExpenseClosedMineObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.19250.190.190.190.1650.1650.1650.1650.1650.27250.27250.26750.26750.26750.26750.26250.26250.26250.26250.25750.25750.25750.25750.250.250.250.250.253.750.54750.54750.53250.53250.53250.53250.52250.52250.5225
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value300000.0200000.0400000.0100000.0200000.0200000.0200000.0400000.0300000.0300000.0
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value1.3511.3391.3281.3271.1531.1441.1451.1441.9711.9992.0322.1023122-13.5664.4664.522
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1.3511.3391.3281.3271.1531.1451.1441.1451.1441.131.8621.8631.8271.8121.8121.8341.8041.7941.8141.8381.851.8711.9271.9931.9641.9711.9992.0322.1023122-4.6-4.531-4.4-4.5-4.430-4.3
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.033.9-100.8691.1-19.80.00.00.00.0

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiRealizedGainLoss


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1512000.0-1196000.0478000.0108000.0261000.0698000.0-797000.0397000.0183000.0-98000.0
Percentage of EquitySecuritiesFvNiRealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiRealizedGainLoss dei:LegalEntity, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

nacco:BellaireCorporation, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1100000.0-1200000.0400000.0100000.0300000.0700000.0-800000.0400000.0200000.0-100000.0
Percentage of EquitySecuritiesFvNiRealizedGainLoss72.8100.383.792.6114.9100.3100.4100.8109.3102.0

us-gaap:EquitySecuritiesFvNiRealizedGainLoss us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-30
Value400000.0
Percentage of EquitySecuritiesFvNiRealizedGainLoss26.5

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value1000.05000.04000.03000.03000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeaseInterestPaymentOnLiability


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value1000.05000.04000.03000.03000.0
Percentage of FinanceLeaseInterestPaymentOnLiability100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value8000.0534000.0115000.0110000.0122000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value9000.094000.0104000.0100000.096000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets1

us-gaap:GainLossOnDispositionOfAssets1


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value247000.0094000.019000.018000.057000.0210000.053000.0475000.02641000.0400000.0-502000.0-658000.0
Percentage of GainLossOnDispositionOfAssets1100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossAttributableToParent

us-gaap:IncomeLossAttributableToParent


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value5.5846.096119.76317107.5818.98
Percentage of IncomeLossAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value79000.0133000.0328000.0327000.0323000.0322000.0322000.0321000.0318000.0315000.0314000.0313000.0311000.0308000.0308000.0307000.0303000.0303000.0304000.0264000.0300000.01172000.02000.0191000.0-420000.0388000.0419000.0286000.0336000.0391000.0434000.0383000.0432000.0351000.0
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInEquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:IncreaseDecreaseInEquitySecuritiesFvNi

us-gaap:FairValueInputsLevel1, us-gaap:CarryingReportedAmountFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-30
Value2000000.0
Percentage of IncreaseDecreaseInEquitySecuritiesFvNi100.0

us-gaap:InvestmentIncomeNonoperating

us-gaap:InvestmentIncomeNonoperating


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value129000.0401000.0581000.0553000.0
Percentage of InvestmentIncomeNonoperating100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value696000.0873000.0897000.0781000.0845000.0
Percentage of LeaseCost100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value504000.0510000.0569000.0589000.0625000.0
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value543000.0571000.0608000.0587000.0573000.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-101000.0-155000.0-603000.0-70000.0-71000.0-101000.0-141000.0-103000.0-105000.0-140000.0-67000.0-191000.0-148000.0-176000.0-220000.0-166000.0-153000.0-149000.0-215000.0-216000.0-166000.0-259000.0-174000.0-180000.0-115000.0-158000.0-42000.0-254000.0-363000.0-442000.0-62000.0-1926000.0-1904000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value-28000.0-45000.0-21000.0-21000.0-24000.0-25000.0-26000.0-35000.0-38000.0-38000.0-50000.088000.084000.099000.097000.095000.0108000.075000.0-77000.0-83000.0-109000.0-264000.0-144000.0-491000.0-542000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value411000.0-16000.0150000.0-2000.09000.013000.0-219000.0-242000.0-319000.0-309000.0-187000.0-284000.0197000.0-814000.0-877000.045000.03578000.0-1036000.01894000.0-72000.0-224000.0-864000.0934000.014000.0-437000.057000.0528000.088000.056000.0117000.0-147000.014536000.0-14389000.00-100000.00400000.0-400000.00300000.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.00.0100.0

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value-6000000.04000000.0-4000000.000
Percentage of ProceedsFromRepaymentsOfLinesOfCredit100.0100.0100.00.00.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.550.00.0974.4380.0190.0181.1140.0660.2190.0551.950.5320.8630.6113.7791.6511.1880.0420.320.9541.4103.1202.90.30.70.0-1.316
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312013-12-312013-09-302012-12-312012-09-30
Value-101000.0-155000.0-70000.0-71000.0-101000.0-103000.0-105000.0-140000.041000.0-216000.0-113000.0660000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-101000.0-155000.0-70000.0-71000.0-101000.0-141000.0-103000.0-105000.0140000.0-67000.0-191000.0-148000.0-176000.0-1156000.0770000.0-153000.0-149000.0-215000.0-216000.0-166000.0-259000.0-174000.0-180000.0-115000.0-158000.0-2160000.01864000.0-363000.0-442000.0-62000.0-1926000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.00.0100.0100.0-100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-5268.3-863.00.00.054.9-291.8

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value45000.0114000.079000.089000.020000.0
Percentage of ShortTermLeaseCost100.0100.0100.0100.0100.0

us-gaap:TreasuryStockSharesAcquired us-gaap:ShareRepurchaseProgram, us-gaap:StatementClassOfStock

us-gaap:TreasuryStockSharesAcquired

nacco:A2019StockRepurchaseProgram, us-gaap:CommonClassA


None
Period End2020-06-302020-03-31
Value032286.0
Percentage of TreasuryStockSharesAcquired0.0100.0

us-gaap:TreasuryStockValueAcquiredParValueMethod

us-gaap:TreasuryStockValueAcquiredParValueMethod


None
Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value1.0020.0250.0851.30.2840.0553.9515.747165.12.50.0230.00.577
Percentage of TreasuryStockValueAcquiredParValueMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:TreasuryStockValueAcquiredParValueMethod us-gaap:ShareRepurchaseProgram, us-gaap:StatementClassOfStock

nacco:A2019StockRepurchaseProgram, us-gaap:CommonClassA


None
Period End2020-06-302020-03-31
Value0.01.0
Percentage of TreasuryStockValueAcquiredParValueMethod0.099.8

us-gaap:TreasuryStockValueAcquiredParValueMethod us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:CommonStock


None
Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.0320.0010.0020.0360.0290.0080.0020.00.0390.0170.1340.1710.1210.1620.2360.1750.0910.070.1010.3040.090.0450.00.00.006
Percentage of TreasuryStockValueAcquiredParValueMethod3.24.02.42.80.02.83.60.00.00.00.00.00.00.00.00.00.01.81.81.81.81.80.00.01.0

us-gaap:TreasuryStockValueAcquiredParValueMethod us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


None
Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.970.0240.0831.2640.9260.2760.053-8.1161.3711.340.2310.5130.1120.1960.5670.4421.3390.04.181165.012.50.0290.00.571
Percentage of TreasuryStockValueAcquiredParValueMethod96.896.097.697.20.097.296.40.00.00.00.00.00.00.00.00.00.00.072.898.298.2100.0126.10.099.0

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


None
Period End2020-06-302020-03-312019-09-302019-06-302019-03-31
Value137000.0150000.0141000.0175000.0101000.0
Percentage of VariableLeaseCost100.0100.0100.0100.0100.0

dei:EntityCommonStockSharesOutstanding us-gaap:StatementClassOfStock

dei:EntityCommonStockSharesOutstanding

us-gaap:CommonClassA


None
Period End2020-07-312020-05-012020-02-212019-10-252019-07-262019-04-262019-02-222018-10-262018-07-272018-04-272018-02-232017-10-272017-07-282017-04-282017-02-242016-10-282016-07-292016-04-292016-02-262015-10-312015-07-312015-04-302015-02-272014-10-242014-07-252014-04-252014-02-282013-10-252013-08-022013-04-262013-03-012012-10-262012-07-272012-04-272012-02-242011-11-042011-07-29
Value5464000.05452800.05397500.05425600.05421100.05417900.05428300.05373800.05374900.05367900.05362800.05276000.05266300.05263400.05259900.05205500.05240900.05307700.05303600.05261100.05379800.05488000.05610900.05725900.06046200.06218300.06276000.06324400.06417200.06756700.06825500.06812000.06799100.06797400.06793700.06800800.06798500.0
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


None
Period End2020-07-312020-05-012020-02-212019-10-252019-07-262019-04-262019-02-222018-10-262018-07-272018-04-272018-02-232017-10-272017-07-282017-04-282017-02-242016-10-282016-07-292016-04-292016-02-262015-10-312015-07-312015-04-302015-02-272014-10-242014-07-252014-04-252014-02-282013-10-252013-08-022013-04-262013-03-012012-10-262012-07-272012-04-272012-02-242011-11-042011-07-29
Value1568400.01568600.01568700.01568700.01568800.01568800.01568800.01568800.01569200.01569500.01570100.01570100.01570400.01570400.01570900.01571000.01571400.01571500.01571600.01571900.01572600.01572600.01572800.01573800.01580600.01580900.01581000.01581400.01581600.01582000.01582300.01582300.01590400.01590600.01592600.01595600.01595800.0
Percentage of EntityCommonStockSharesOutstanding28.728.829.128.928.929.028.929.229.229.229.329.829.829.829.930.230.029.629.629.929.228.728.027.526.125.425.225.024.623.423.223.223.423.423.423.523.5

nacco:FinanceLeaseRightOfUseAssetAccumulatedAmortization

nacco:FinanceLeaseRightOfUseAssetAccumulatedAmortization


None
Period End2020-03-312019-12-31
Value100000.01900000.0
Percentage of FinanceLeaseRightOfUseAssetAccumulatedAmortization100.0100.0

nacco:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

nacco:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization


None
Period End2020-03-312019-12-31
Value139138
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization100.0100.0

us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value20211513191920121714179.07857911797777311111888921239785741201078190121107416445464483437425
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedSalariesCurrent

us-gaap:AccruedSalariesCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value116.5191920171319139.6276.0117122014322418134034292423191410292218132418433261484261
Percentage of AccruedSalariesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationCurrent

us-gaap:AssetRetirementObligationCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value2285000.02285000.02285000.01826000.01826000.01826000.01800000.03092000.03092000.03092000.03092000.03555000.03843000.0
Percentage of AssetRetirementObligationCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsFairValueDisclosure

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value128.947109.5889.4459.4548.7169.4619.2859.0869.1668.7158.5958.2297.8827.727.4987.3477.2476.9057.2567.2797.226.9556.9066.6386.540.00.05.794
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.00.00.00.00.00.00.00.00.00.0410.0420.00.6230.8290.9210.00.00.00.3890.3640.270.6340.4730.7510.2780.7191.020.7561.090.205
Percentage of AssetsFairValueDisclosure0.00.00.00.00.00.00.00.00.00.50.50.07.210.111.70.00.00.05.45.33.78.76.610.84.010.815.60.00.03.5

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency

us-gaap:EstimateOfFairValueFairValueDisclosure, us-gaap:FairValueMeasurementsRecurring


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value128.947109.5889.4459.4548.7169.4619.2859.1279.2088.7159.2189.0588.8037.727.4987.3477.6367.2697.5267.9137.6937.7067.1847.3577.566.766
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.5100.5100.0107.2110.1111.7100.0100.0100.0105.4105.3103.7108.7106.6110.8104.0110.8115.60.0

us-gaap:CommonStockValueOutstanding us-gaap:StatementClassOfStock

us-gaap:CommonStockValueOutstanding

us-gaap:CommonClassA


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5463000.05453000.05397000.05425000.05421000.05418000.05352000.05373000.05375000.05369000.05282000.05276000.05266000.05263000.05208000.05205000.05241000.05308000.05265000.05277000.05407000.05575000.05662000.05821000.06046000.06218000.06290000.06357000.06455000.06756000.06800000.06800000.06800000.06800000.06800000.06800000.06800000.06800000.0
Percentage of CommonStockValueOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1569000.01569000.01569000.01569000.01569000.01569000.01569000.01569000.01569000.01570000.01570000.01570000.01570000.01571000.01571000.01571000.01572000.01571000.01572000.01572000.01573000.01573000.01573000.01574000.01581000.01581000.01581000.01581000.01582000.01582000.01600000.01600000.01600000.01600000.01600000.01600000.01600000.01600000.0
Percentage of CommonStockValueOutstanding28.728.829.128.928.929.029.329.229.229.229.729.829.829.830.230.230.029.629.929.829.128.227.827.026.125.425.124.924.523.423.523.523.523.523.523.523.523.5

us-gaap:ContractWithCustomerAssetNet

us-gaap:ContractWithCustomerAssetNet


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2021151319192012171414
Percentage of ContractWithCustomerAssetNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


None
Period End2020-06-302020-03-312019-12-31
Value1226000.02203000.01908000.0
Percentage of ContractWithCustomerLiability100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1683000.01918000.02153000.01543000.01660000.01832000.02008000.02184000.01356000.01458000.01766000.0
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCompensationLiabilityCurrent

us-gaap:DeferredCompensationLiabilityCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.00.0131313130.0
Percentage of DeferredCompensationLiabilityCurrent0.00.0100.0100.0100.0100.00.0

us-gaap:DueFromAffiliates

us-gaap:DueFromAffiliates


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value4.7156.3776.4116.1077.2328.8057.999111221192211137.4047.364.454.593.0852.7933.1372.1195744363232302927283.2423.9934.0
Percentage of DueFromAffiliates100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DueToAffiliateCurrentAndNoncurrent

us-gaap:DueToAffiliateCurrentAndNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value1907000.0157000.0577000.037000.0344000.0637000.01653000.0383000.04609000.0237000.01925000.03228000.03565000.0
Percentage of DueToAffiliateCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EnergyRelatedInventoryCoal

us-gaap:EnergyRelatedInventoryCoal


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value8.92910158.4167.7521011131112131412131312181616202526292524292421221417161713
Percentage of EnergyRelatedInventoryCoal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302016-03-312015-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value25272423222320191818162727353130292435343720221822
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestments us-gaap:BalanceSheetLocation

us-gaap:OtherNoncurrentAssets


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value252724232223202018181627273531343029242527312828303433353437
Percentage of EquityMethodInvestments99.9100.1100.0100.0100.1100.1100.0100.099.8100.199.8100.1100.2100.0100.10.099.999.999.80.00.00.00.00.00.00.00.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


None
Period End2020-06-302020-03-312019-12-31
Value33000.033000.0558000.0
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


None
Period End2020-06-302020-03-312019-12-31
Value68000.076000.085000.0
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


None
Period End2020-06-302020-03-312019-12-31
Value98000.0107000.0544000.0
Percentage of FinanceLeaseRightOfUseAsset100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization

us-gaap:FinanceLeaseRightOfUseAssetAccumulatedAmortization


None
Period End2020-06-302019-12-31
Value100000.01900000.0
Percentage of FinanceLeaseRightOfUseAssetAccumulatedAmortization100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.05090.05090.05150.0398
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0

us-gaap:IncomeTaxesReceivable

us-gaap:IncomeTaxesReceivable


None
Period End2020-06-302020-03-312019-12-31
Value15148.928
Percentage of IncomeTaxesReceivable100.0100.0100.0

us-gaap:LinesOfCreditCurrent

us-gaap:LinesOfCreditCurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5.0117.00.04.04.04.010.01215152230125.256.1584.178.36513112255697447233727423542624567232313
Percentage of LinesOfCreditCurrent100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MineReclamationAndClosingLiabilityNoncurrent

us-gaap:MineReclamationAndClosingLiabilityNoncurrent


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value35343433303635363635373939383841414139403837373635292929282929341823
Percentage of MineReclamationAndClosingLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


None
Period End2020-06-302020-03-312019-06-302019-03-31
Value0.07010.070.06970.0695
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0

us-gaap:OtherInventorySupplies

us-gaap:OtherInventorySupplies


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value26252424232220191717161515161516192021212019191819171717151513121211
Percentage of OtherInventorySupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidExpenseAndOtherAssets

us-gaap:PrepaidExpenseAndOtherAssets


None
Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1715121418141012137.9866.3232220162821191221252614252321131516191114466439384133
Percentage of PrepaidExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization


None
Period End2020-06-302019-12-31
Value143138
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization100.0100.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value500000.0700000.0900000.0200000.0400000.0500000.0800000.0200000.0400000.0700000.0
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount

us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount


None
Period End2020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value5.35.75.06.05.46.14.46.35.85.95.2175.36.24.65.34.7933.8944.03.94.04.04.03.84.55.35.45.04.25.13.25.24.96.3
Percentage of VariableInterestEntityEntityMaximumLossExposureAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept


us-gaap:CommonStockSharesOutstanding
us-gaap:StatementClassOfStock
(None,)
None
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
None
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:TimingOfTransferOfGoodOrService
(None,)
None
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
(None,)
None
us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems
(None,)
None
us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
None
Operating Margin
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
None
us-gaap:StockholdersEquity
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
(None, 'us-gaap:CommonStock')
None
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:StockholdersEquity
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
(None, 'us-gaap:CommonStock')
None
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
None
us-gaap:DepreciationDepletionAndAmortization
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
None
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
None