CSX


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestIncomeExpenseNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingCostsAndExpenses

us-gaap:OperatingIncomeLoss

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService

us-gaap:Revenues

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:StatementEquityComponents
us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ShortTermInvestments

us-gaap:AccountsReceivableNetCurrent

us-gaap:OtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:TaxesPayableCurrent

us-gaap:DebtAndCapitalLeaseObligations
us-gaap:LongtermDebtType

us-gaap:LongTermDebtAndCapitalLeaseObligations
us-gaap:BalanceSheetLocation

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
us-gaap:StatementEquityComponents
us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock
us-gaap:Restatement, us-gaap:ReclassificationType

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:Restatement, us-gaap:ReclassificationType

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:MinorityInterest

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt
us-gaap:BalanceSheetLocation

us-gaap:RepaymentsOfLongTermDebt
us-gaap:BalanceSheetLocation

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:ShareRepurchaseProgram

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

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

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

csx:EquipmentAndOtherRents

csx:EquipmentandOtherRents
us-gaap:StatementEquityComponents
csx:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodAndOther
us-gaap:StatementEquityComponents
csx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsExercisesinPeriodandOther

csx:StockIssuedDuringPeriodValueStockOptionsExercisedAndOther
us-gaap:StatementEquityComponents

csx:StockIssuedDuringPeriodValueStockOptionsExercisedandOther
us-gaap:StatementEquityComponents

us-gaap:AmortizationOfDebtDiscountPremium
us-gaap:BalanceSheetLocation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:Depreciation

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
us-gaap:DebtInstrument
us-gaap:ExtinguishmentOfDebtAmount

us-gaap:FuelCosts

us-gaap:GainLossOnSaleOfPropertyPlantEquipment
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:IncreaseDecreaseInAccruedTaxesPayable

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities

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

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
us-gaap:StatementEquityComponents

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherOperatingActivitiesCashFlowStatement
us-gaap:BusinessAcquisition
us-gaap:OtherPaymentsToAcquireBusinesses

us-gaap:PaymentsForProceedsFromOtherInvestingActivities
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:PaymentsToAcquireBusinessesGross

us-gaap:PaymentsToAcquireShortTermInvestments

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:StatementScenario, us-gaap:PropertyPlantAndEquipmentByType, us-gaap:SubsequentEventType

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

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares
us-gaap:ShareRepurchaseProgram
us-gaap:StatementEquityComponents
us-gaap:SubsequentEventType

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment
us-gaap:RetirementPlanType
csx:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationReturnOnPlanAssets
us-gaap:RetirementPlanType
csx:DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty
csx:EquityMethodInvestmentOwnershipVotingInterest

csx:LongTermDebtAndFinanceLeaseMaturityAfterYearFive

csx:LongTermDebtAndFinanceLeaseMaturityYearFive

csx:LongTermDebtAndFinanceLeaseMaturityYearFour

csx:LongTermDebtAndFinanceLeaseMaturityYearOne

csx:LongTermDebtAndFinanceLeaseMaturityYearThree

csx:LongTermDebtAndFinanceLeaseMaturityYearTwo
us-gaap:LossContingenciesByNatureOfContingency
csx:NumberOfImpairedSites

csx:NumberOfOceanRiverAndLakePortsServiced

csx:NumberOfShortLineAndRegionalRailroadsServed
us-gaap:ProductOrService
csx:NumberOfTerminals
dei:LegalEntity, us-gaap:StatementGeographical, us-gaap:BusinessAcquisition
csx:NumberOfTerminalsAndFacilities

csx:PercentageOfAssetsDepreciatedUnderGroupLifeMethod

csx:PercentageOfLaborCostRailInstallationDeconstructionOfOldTrack

csx:PercentageOfLaborCostRailInstallationInstallationOfNewTrack

csx:RailRouteNetworkDistance
dei:LegalEntity
dei:LegalEntity, us-gaap:BusinessAcquisition
dei:LegalEntity
csx:RailRouteNetworkDistancePartialInterest
dei:LegalEntity, us-gaap:BusinessAcquisition
us-gaap:PropertyPlantAndEquipmentByType
csx:SaleOfPropertyPlantAndEquipmentConsideration
us-gaap:AwardType
csx:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValue

dei:EntityNumberOfEmployees
us-gaap:ShareRepurchaseProgram
us-gaap:AcceleratedShareRepurchasesSettlementPaymentOrReceipt
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:AccountsReceivableGross
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:PropertyPlantAndEquipmentByType
us-gaap:ProductOrService

us-gaap:AccountsReceivableNet
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:ProductOrService
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:AllowanceForDoubtfulAccountsReceivable
us-gaap:ProductOrService
us-gaap:StatementEquityComponents
us-gaap:AociTaxAttributableToParent
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue
us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis, us-gaap:InvestmentType
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:DebtInstrumentFairValue

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeAssetNotionalAmount
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DisposalGroupIncludingDiscontinuedOperationConsideration
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:BalanceSheetLocation, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:DueToAffiliateCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:EquityMethodInvestmentOwnershipPercentage

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

us-gaap:LesseeFinanceLeaseDiscountRate

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
us-gaap:BalanceSheetLocation

us-gaap:LossContingencyAccrualAtCarryingValue
us-gaap:LossContingenciesByNatureOfContingency

us-gaap:LossContingencyAccrualCarryingValueCurrent
us-gaap:LossContingenciesByNatureOfContingency

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

us-gaap:MaterialsSuppliesAndOther
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:BalanceSheetLocation, us-gaap:DebtInstrument, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:NotesPayableRelatedPartiesNoncurrent
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:ShortTermBorrowings

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
us-gaap:ShareRepurchaseProgram
us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

Plots across concepts


IncomeStatement
Comprehensive Income Net Of Tax
Expenses
Allocated Share Based Compensation Expense
Balance Sheet
Short Term Investments
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Other Assets Noncurrent
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Payable
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Common Stock Shares Issued
DividendsAndRepurchase
Dividends Common Stock Cash
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:CommonStockValue █▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂2254.0757.0763.0765.0765.0765.0773.0782.0798.0809.0818.0844.0859.0875.0890.0894.0913.0923.0928.0937.0946.0956.0966.0975.0984.0988.0992.0995.01000.01004.01009.01014.01019.01022.0NA1020.01031.01040.01039.01049.01050.01095.0368.0370.0NANANA393.0NANANA
us-gaap:CommonStockSharesIssued NANA763.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CommonStockSharesAuthorized NANA1800.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PreferredStockSharesAuthorized NANA25.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CommonStockSharesOutstanding NANA763.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA370.342NANANA393.46NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock█▁▁▁▁▁▁▁▁▁▁▁▁▂▂2254.496757.4762.529764.775765.053765.459773.471782.342798.176809.164818.18844.42858.811875.354889.851NANANA928.18NANANA965.514NANANA991.591NANANA1008.86NANANANA1020.485NANANA1049.157NANANA1111.026NANANA1180.38NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁2275.0762.0NA767.0767.0773.0NA792.0807.0817.0NA854.0868.0888.0NA906.0924.0929.0NA943.0952.0963.0NA982.0989.0992.0NA999.01003.01008.0NA1018.01023.01023.0NANA1040.01043.01049.0NA1077.01109.015371.586NA1145.01159.173394.323NANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁2270.0761.0NA765.0766.0772.0NA790.0805.0814.0NA850.0864.0885.0NA902.0920.0927.0NA942.0952.0962.0NA981.0988.0991.0NA999.01003.01008.0NA1017.01022.01022.0NANA1038.01041.01047.0NA1071.01102.409369.349NA1134.01149.492391.079NANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOption█▁2.01.0NA2.02.41.4NA1.00.90.6NA0.0071.00.8NA10.010.03.0NA2.45.04.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ▁▂▂▂▁▂▂▂▂▂▂▂▂▂█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▁0.520.931.00.960.651.00.991.081.081.021.021.051.020.784.630.510.550.390.490.480.470.370.480.520.560.450.490.510.530.40.420.460.520.450.440.430.440.490.430.440.430.461.071.151.091.080.780.770.740.780.63
us-gaap:EarningsPerShareDiluted ▁▂▂▂▁▂▂▂▂▂▂▂▂▂█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▁0.520.930.99000000000000020.960.651.00.991.081.081.021.011.051.010.784.620.510.550.390.490.480.470.370.480.520.560.450.490.510.530.40.420.460.520.450.440.430.440.490.430.430.430.461.061.141.081.070.780.770.730.770.62
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
 TTM Greenblatt ROC _ _█▄▅▅▃▅▅▅▆▅▅▅▅▄▄▃▃▂▄▃▃▂▂▃▄▃▃▃▄▂▂▃▃▃▂▂▃▃▃▃▃▃▂▃▃▂▁▁1691.01101.01215.01141.0828.01178.01154.01287.01305.01219.01249.01293.01283.01044.01121.0876.0958.0712.01004.0841.0840.0704.0791.0933.01017.0843.0901.0976.0997.0739.0813.0854.0963.0880.0815.0804.0854.0943.0856.0841.0878.0926.0773.0846.0825.0768.0632.0579.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:AllocatedShareBasedCompensationExpense ▆▆▂▅▁▆▆▄▅▄▄▄▄▄▁▅█▇▄▄▃▄▂▃▄▄▄▄▃▃▃▃▃▂27.032.0-3.020.0-12.024.031.013.017.013.013.013.012.013.0-12.019.044.038.013.09.07.08.0-8.02.010.08.013.09.06.05.05.07.05.0-3.0NA4.06.04.00.00.07.011.012.016.013.09.023.0NANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▃▂▂▂▁▂▂▂▂▂▂▂▂▂█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▁▁▁1152.0774.0780.0770.0519.0773.0744.0863.0874.0836.0722.0901.0881.0596.04215.0467.0575.0368.0418.0465.0454.0363.0477.0518.0565.0440.0308.0518.0544.0414.0770.0479.0552.0476.0NA340.0471.0529.0458.0300.0473.0519.0406.0400.0431.0424.0317.0NANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▄▄▄▂▄▄▅▅▅▅▅▅▄▄▂▃▁▂▂▂▁▂▃▃▂▃▃▃▁▂▂▃▂1530.0937.0994.0968.0652.01013.0981.01125.01146.01064.01098.01150.01144.0912.0983.0750.0827.0582.0751.0715.0707.0568.0741.0799.0887.0711.0775.0813.0850.0606.0642.0723.0832.0725.0NA718.0721.0809.0716.0712.0746.0792.0638.0701.0702.0642.0NANANANANA
us-gaap:IncomeTaxExpenseBenefit ██████████████▁███████████████████357.0231.0234.0232.0153.0243.0210.0269.0276.0230.0255.0256.0267.0217.0-3157.0291.0317.0220.0293.0260.0262.0212.0275.0292.0334.0269.0284.0304.0321.0208.0235.0260.0297.0266.0NA275.0266.0297.0267.0255.0282.0286.0243.0271.0288.0228.0196.0NANANANA
us-gaap:InterestIncomeExpenseNet ▆▅▂▃▁▃▂▄▅█-181.0-184.0-189.0-187.0-191.0-187.0-189.0-186.0-184.0-178.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▃▂▂▂▁▂▂▂▂▂▂▂▂▂█▁▁▁▁▁▁▁▁▁▂▁▁▁▂▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1173.0706.0760.0736.0499.0770.0771.0856.0870.0834.0843.0894.0877.0695.04140.0459.0510.0362.0458.0455.0445.0356.0466.0507.0553.0442.0491.0509.0529.0398.0426.0463.0535.0462.0449.0443.0455.0512.0449.0457.0464.0506.0395.0430.0414.0414.0305.0303.0290.0305.0245.0
us-gaap:NonoperatingIncomeExpense ▄▄▁▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▄▄▃▃█▃▃▃▃▁20.020.0-32.014.015.022.016.024.025.023.020.019.018.017.02.06.06.07.018.013.08.07.090.02.04.02.07.0-26.0NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingCostsAndExpenses ▁▇▅▄▃▆▇▇▇█1299.01712.01610.01507.01427.01677.01731.01691.01756.01794.0NANANANANANANANANANANANANANA559.0627.0624.0610.0621.0629.0632.0576.0560.0507.0NA539.0525.0550.0542.0580.0562.0557.0530.0496.0509.0551.0NANANANANA
us-gaap:OperatingIncomeLoss █▄▅▅▃▅▅▆▆▅▅▆▆▄▅▃▄▂▄▃▃▂▃▃▄▃▃▄▄▂▃▃▄▃▃▃▃▄▃▃▃▃▃▃▃▂▂▁▁▁▁1691.01101.01215.01141.0828.01178.01154.01287.01305.01219.01249.01293.01283.01044.01121.0876.0958.0712.01004.0841.0840.0704.0791.0933.01017.0843.0901.0976.0997.0739.0813.0854.0963.0880.0815.0804.0854.0943.0856.0841.0878.0926.0773.0846.0825.0768.0632.0579.0594.0577.0520.0
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▆▅▅▄▁▅▆▆▇▆▇▇▇▆▅▅▆▆▇▄▄▄▅▆▇▇███▆▇▆▇▆▆▆▆▆▆▆▆▇▅▅▄▄▃▂▂▁▁2990.02813.02825.02648.02255.02855.02885.02978.03061.03013.03143.03129.03102.02876.02863.02743.02933.02869.03037.02710.02704.02618.02781.02939.03064.03027.03192.03221.03244.03012.03032.02999.03069.02963.02895.02884.02894.03012.02966.02951.02963.03019.02810.02816.02666.02663.02491.02320.02289.02185.02247.0
us-gaap:Revenues ▆▅▅▄▁▅▆▆▇▆▇▇▇▆▅▅▆▆▇▄▄▄▅▆▇▇███▆▇▆▇▆▆▆▆▆▆▆▆▇▅▅▄▄▃▂▂▁▁2990.02813.02825.02648.02255.02855.02885.02978.03061.03013.03143.03129.03102.02876.02863.02743.02933.02869.03037.02710.02704.02618.02781.02939.03064.03027.03192.03221.03244.03012.03032.02999.03069.02963.02895.02884.02894.03012.02966.02951.02963.03019.02810.02816.02666.02663.02491.02320.02289.02185.02247.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:Assets ████▇▇▇▇▆▇▆▆▆▆▅▅▅▅▅▄▄▄▄▄▃▃▃▃▂▂▂▁▁▁40015.039692.039793.039443.038904.038834.038257.038795.037924.038154.036729.036861.036924.037439.035739.035573.035861.035712.035414.034681.034550.034610.035039.034015.033777.033161.033053.032623.031975.031680.031782.030943.030881.030586.0NA30571.029930.029589.029186.029473.028248.028705.027577.028141.0NANANA26887.0NANANA
us-gaap:Liabilities ██████▇█▆▇▅▃▃▃▁▅▅▅▄▃▃▃▄▃▂▂▂▂▁▁▁▁▁▁26581.026532.026683.026716.026741.026946.026394.026916.025634.025709.024149.023126.022901.023048.021018.024671.024260.024043.023720.023011.022925.023004.023371.022355.022200.021823.021877.021481.021071.021035.021278.021075.021219.021238.0NA21569.020899.020694.020682.021005.019980.019764.018821.019441.0NANANA18119.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity ████▇▇▇▇▆▇▆▆▆▆▅▅▅▅▅▄▄▄▄▄▃▃▃▃▂▂▂▁▁▁40015.039692.039793.039443.038904.038834.038257.038795.037924.038154.036729.036861.036924.037439.035739.035573.035861.035712.035414.034681.034550.034610.035039.034015.033777.033161.033053.032623.031975.031680.031782.030943.030881.030586.0NA30571.029930.029589.029186.029473.028248.028705.027577.028141.0NANANA26887.0NANANA
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AccumulatedGainLossNetCashFlowHedgeParent▆█▄▃▁83.0118.062.034.09.0NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:AssetsCurrent █▇█▇▆▆▅▆▄▅▃▃▄▅▁▂▃▃▃▂▂▃▄▃▃▂▃▃▂▂▃▂▃▃4573.04305.04441.04228.03791.03821.03278.03960.03186.03479.02565.02784.02881.03542.01915.02172.02630.02660.02487.02163.02228.02608.02966.02502.02669.02457.02572.02676.02372.02289.02602.02200.02489.02567.0NA2801.02393.02372.02468.02935.02301.02967.02171.02855.0NANANA2570.0NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue NANA3129.0NANANA958.01521.0853.01188.0858.0663.01320.01980.0401.0591.0620.0930.0603.0603.0566.0731.0628.0541.0438.0561.0669.0479.0573.0475.0592.0591.0614.0705.0NA784.0693.0642.0627.0783.0580.01252.0534.01292.0636.0633.0993.01029.0NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents █▇█▇▆▅▁▃▁▂▁2986.02955.03129.02898.02391.01995.0958.01521.0853.01188.0858.0NANANA401.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ShortTermInvestments ▁▁▁▁▂▄██▇▇▃▅▂▁▁▂▄▃▄▂▃▄▆▄▆▃▃▅▂▃▄▂▄▃4.02.02.01.0203.0487.0996.01037.0878.0822.0253.0615.083.010.018.0113.0477.0287.0417.0152.0262.0375.0810.0425.0680.0257.0292.0575.0216.0248.0487.0128.0403.0367.0NA587.035.041.0139.0523.061.043.056.054.0NANANA61.0NANANA
us-gaap:AccountsReceivableNetCurrent █▃▂▄▁▄▄▆▆▆▄▆▅▅▃▄▄▃▃▂▂▂▄▄▄▆▇▇▅▅▅▄▃▃1192.0957.0912.0980.0860.01008.0986.01101.01111.01106.01010.01090.01036.01045.0970.0981.01015.0943.0938.0925.0912.0917.0982.01003.01022.01103.01129.01123.01062.01073.01052.0981.0946.0976.0NA962.01163.01136.01161.01129.01148.01112.01068.0993.0NANANA995.0NANANA
us-gaap:OtherAssetsCurrent ▃▃▃▃▃▂▂▁▄▄█▅▄▅▆▃▃▂▄▂▂▂▁▂▃▃▁▃▅▃▁▂▄▃102.093.096.096.091.074.077.066.0122.0122.0181.0133.0116.0138.0154.095.090.085.0122.086.089.083.070.087.0102.099.068.095.0123.091.064.085.0118.0103.0NA75.0104.0125.0112.078.0112.0123.0102.0106.0NANANA124.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:PropertyPlantAndEquipmentGross ████████▇▇▇▇▇▇▇▇▇▆▆▆▆▅▅▅▄▄▄▃▃▂▂▂▁▁45714.045593.045530.045409.045327.045065.045100.045012.044756.044826.044805.044485.044306.044103.044000.044105.043751.043399.043000.042720.042345.041865.042000.040843.040313.039824.039343.038533.038010.037604.037184.036637.036149.035674.0NA35279.035020.034616.034002.033704.033141.032777.032360.032065.0NANANA30907.0NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █████▇▇▇▇▇▇▇▇▆▇▇▆▆▆▆▅▅▅▄▄▄▄▃▃▂▂▂▁▁13228.013190.013086.013028.013066.012877.012932.012934.012737.012838.012807.012614.012459.012355.012560.012526.012324.012140.012077.011938.011738.011572.011400.011206.011063.010952.010759.010539.010325.010110.09893.09691.09550.09386.0NA9229.09088.08984.08861.08730.08723.08575.08445.08266.0NANANA7843.0NANANA
us-gaap:PropertyPlantAndEquipmentNet ████████▇▇▇▇▇▇▇▇▇▇▆▆▆▆▅▅▄▄▄▃▃▂▂▂▁▁32486.032403.032444.032381.032261.032188.032168.032078.032019.031988.031998.031871.031847.031748.031764.031579.031427.031259.031150.030782.030607.030293.030174.029637.029250.028872.028584.027994.027685.027494.027291.026946.026599.026288.0NA26050.025932.025632.025141.024974.024418.024202.023915.023799.0NANANA23064.0NANANA
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures █▄▁2033.02007.01985.0NANANA1879.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA477.0464.0461.0NANANA438.0NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▇▇▇▇██████▁462.0467.0472.0500.0512.0523.0532.0539.0550.0550.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▅▆▄▃▄▃▃▃▂▂▃▄▄▄▃▁▁▂▁▁▁▁▆▆▅▅▆██▇█▇▇▆461.0510.0451.0385.0419.0401.0400.0369.0347.0344.0387.0442.0455.0435.0374.0316.0317.0324.0318.0303.0302.0307.0505.0500.0492.0479.0541.0608.0587.0583.0591.0556.0565.0516.0NA514.0410.0402.0399.0393.0361.0378.0351.0353.0NANANA165.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:AccountsPayableCurrent ▃▃▂▇▅▇▇█▆▆▅▆▃▄▃▄▂▄▂▃▁▂▁▃▁▃▃▆▄▅▅█▆▇879.0859.0809.01042.0960.01058.01043.01101.0989.01019.0949.0982.0852.0905.0847.0905.0810.0898.0806.0859.0766.0815.0764.0842.0772.0858.0845.0986.0900.0975.0957.01078.01022.01043.0NA1014.01197.01055.01205.01147.01170.01076.01024.01046.0NANANA967.0NANANA
us-gaap:LiabilitiesCurrent ▃▂▃▅▅▄▄█▃▃▃▃▁▂▂▃▁▅▃▅▅▁▃▃▂▃▄▄█▄▆▅▆▆1951.01800.02019.02294.02347.02211.02151.02805.02053.01926.01915.01944.01732.01891.01894.02075.01672.02277.02040.02263.02282.01692.01952.01922.01778.02038.02107.02231.02797.02212.02424.02251.02418.02474.0NA2627.03021.02575.02593.02687.02568.02485.02222.02537.0NANANA1865.0NANANA
us-gaap:OperatingLeaseLiabilityCurrent NANA45.0NANANA57.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent ▂▂▂▃▂▃▃▃▂▃▃▂▂▂▂▁▁▃▁▁▂▂█▃▁▁▁▁▁▁▁▁▁▂159.0155.0164.0201.0174.0185.0205.0208.0164.0178.0179.0151.0138.0144.0161.0106.0127.0187.0114.0109.0150.0159.0439.0187.0119.0113.0116.0108.0128.0113.0105.0111.0119.0138.0NA140.0172.0179.0192.0180.0101.0168.092.097.0NANANA100.0NANANA
us-gaap:TaxesPayableCurrent ▅▅▁▃█▆▁▃▂▄▂▃▂▆▃▇▂▆▂▁▃▃▂▆▅▆▃▅▅▅▁▃▂▄242.0237.073.0140.0380.0269.069.0155.0133.0193.0106.0166.0123.0274.0157.0322.095.0302.0129.090.0137.0170.0108.0282.0243.0288.0163.0249.0229.0246.091.0138.0111.0206.0NA85.0261.0228.0134.0129.0129.0137.093.085.0NANANA112.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:DebtAndCapitalLeaseObligations ████████▇▇▆▅▅▅▄▄▄▃▃▂▂▂▃▂▂▂▂▂▁▁▁▁▁▁16351.016347.016705.016492.016506.016732.016238.016737.015767.015766.014757.013772.013788.013787.011809.011807.011825.011294.011293.010519.010537.010536.010703.010106.010125.09741.09742.09617.09309.09346.09555.09051.09375.09418.0NA9832.09063.09089.09125.09241.08654.08680.0NA8664.0NANANANANANANA
us-gaap:LongTermDebtAndCapitalLeaseObligations ████████▇▇▆▆▆▆▄▄▄▃▃▂▂▃▃▂▂▂▂▂▁▂▂▁▁▁16229.016306.016304.016121.016128.016477.015993.015992.015522.015748.014739.013754.013769.013768.011790.011788.011806.010963.010962.09888.09905.010516.010683.010088.010107.09513.09514.09387.08410.09021.09022.08787.08811.08846.0NA9052.08257.08581.08623.08734.08160.08186.07637.08051.0NANANA7895.0NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ██▇▆▅▄▄▂▁7248.07226.07168.07087.07028.06991.06961.06882.06791.0NA6690.0NANANA6418.0NANANA9596.0NANANA9179.0NANANA8717.0NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:OtherPostretirementBenefitPlansDefinedBenefitNANA79.0NANANA97.0NANANA84.0NANANA212.0NANANA235.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:PensionPlansDefinedBenefitNANA270.0NANANA305.0NANANA324.0NANANA211.0NANANA326.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▁▁▁▄▃▅▄▄▄▅▅▄▄▃▄▄▄▃▄▄▃▃▄▄▄███▇▇▇▆▆▅8.09.09.014.013.017.015.015.014.017.017.016.014.013.016.015.014.013.015.014.013.013.016.015.014.023.024.023.022.021.021.020.019.018.0NA14.015.014.013.013.012.011.014.014.0NANANA14.0NANANA
us-gaap:OtherLiabilitiesNoncurrent ▁▁▁▁▁▂▂▁▂▂▂▂▂▂▂▃▃▄▄▆▆▆▆▆▆▆▆▄▄▄▄███493.0518.0513.0534.0554.0568.0591.0548.0568.0583.0594.0613.0636.0646.0650.0766.0797.0903.0863.01105.01137.01145.01162.01118.01138.01100.01122.0840.0847.0859.0870.01366.01378.01393.0NA1457.01284.01315.01330.01525.01283.01285.01289.01298.0NANANA1284.0NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▇▇▇███████▁450.0453.0455.0475.0481.0489.0493.0494.0501.0502.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA43.0NANANA54.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName,us-gaap:RelatedPartyTransactionsByRelatedParty csx:Conrail,us-gaap:CorporateJointVentureNANA30.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA36.0NANANA48.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName,us-gaap:RelatedPartyTransactionsByRelatedParty csx:Conrail,us-gaap:CorporateJointVentureNANA30.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA36.0NANANA39.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName,us-gaap:RelatedPartyTransactionsByRelatedParty csx:Conrail,us-gaap:CorporateJointVentureNANA22.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA35.0NANANA37.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA1172.0NANANA1208.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
 us-gaap:StockholdersEquity us-gaap:StatementEquityComponents us-gaap:AccumulatedGainLossNetCashFlowHedgeParent▆█▄▃▁83.0118.062.034.09.0NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▆▆▆▅▅▄▄▄▅▅▅▇▇██▃▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▁▁13434.013160.013110.012727.012163.011888.011863.011879.012290.012445.012580.013735.014023.014391.014721.010902.011601.011669.011694.011670.011625.011606.011668.011660.011577.011338.011176.011142.010904.010645.010504.09868.09662.09348.0NA9002.09031.08895.08504.08468.08268.08941.08756.08700.0NANANA8768.0NANANA
us-gaap:CommonStockValue █▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂2254.0757.0763.0765.0765.0765.0773.0782.0798.0809.0818.0844.0859.0875.0890.0894.0913.0923.0928.0937.0946.0956.0966.0975.0984.0988.0992.0995.01000.01004.01009.01014.01019.01022.0NA1020.01031.01040.01039.01049.01050.01095.0368.0370.0NANANA393.0NANANA
us-gaap:AdditionalPaidInCapitalCommonStock NA448.0409.0400.0361.0366.0346.0314.0290.0267.0249.0129.0127.0215.0217.0227.0210.0170.0138.0125.0116.0112.0113.0120.0118.0100.092.080.070.065.061.050.044.036.0NA28.020.011.05.06.00.00.00.00.0NANANA80.0NANANA
 us-gaap:AdditionalPaidInCapitalCommonStock us-gaap:Restatement,us-gaap:ReclassificationType srt:RevisionOfPriorPeriodReclassificationAdjustment,us-gaap:ReclassificationOtherNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▅▆▆▅▅▄▄▄▅▅▅▇▇██▃▄▄▄▄▄▄▄▄▄▃▃▃▃▂▂▂▁▁11723.012476.012527.012166.011676.011412.011404.011416.011843.012011.012157.013320.013604.013873.014084.010327.011033.011197.011253.011233.011199.011183.011238.011195.011117.010895.010734.010527.010304.010062.09936.09670.09482.09191.0NA8876.08798.08679.08313.08275.07944.08582.09134.09087.0NANANA9090.0NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▇▆▆▅▅▅▅▅▅▅▇▆▆█▇▇▆▅▅▅▅▅▅▅▅▅███▇▂▁▁-551.0-530.0-598.0-618.0-652.0-672.0-675.0-648.0-655.0-659.0-661.0-574.0-581.0-585.0-486.0-561.0-569.0-634.0-640.0-639.0-649.0-658.0-665.0-645.0-656.0-668.0-666.0-483.0-492.0-507.0-523.0-886.0-902.0-919.0NA-936.0-833.0-849.0-866.0-875.0-738.0-747.0-760.0-771.0NANANA-809.0NANANA
us-gaap:MinorityInterest ▁▁▁▄▃▅▄▄▄▅▅▄▄▃▄▄▄▃▄▄▃▃▄▄▄███▇▇▇▆▆▅8.09.09.014.013.017.015.015.014.017.017.016.014.013.016.015.014.013.015.014.013.013.016.015.014.023.024.023.022.021.021.020.019.018.0NA14.015.014.013.013.012.011.014.014.0NANANA14.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▆▆▄▅▆▅█▅▆▆▇▅▄▂▇▁▅▁▄▃▃▃▄▄▂▅▃▃▂▃▄▃▃1167.01232.01135.0944.01006.01178.01113.01470.01094.01173.01235.01397.01043.0966.0611.01295.0523.01043.0553.0896.0838.0754.0858.0930.0892.0690.01041.0857.0846.0599.0768.0920.0848.0731.0NA642.01013.0847.0444.0906.0998.01081.0506.0969.0855.0678.0744.0NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▅▅▆▆█▅▄▅▂▇▂▅▅▅▇▃▆▂▅▄▇▂▅▁▄▄▂▅▆▂▅▃▆-230.0-297.0-456.0-190.0-147.0144.0-373.0-473.0-386.0-870.0-97.0-832.0-439.0-316.0-416.0-112.0-681.0-286.0-905.0-412.0-522.041.0-941.0-377.0-1074.0-500.0-563.0-970.0-423.0-227.0-984.0-322.0-656.0-265.0NA-952.0-596.0-652.0-77.0-1186.0-470.0-555.0-376.0-694.0-443.0-309.0-310.0NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▄▄▄▄▁▄▂▅▂▁▁█▄▁▅▄▆▄▄▃▆▄▅▄▄▅▄▄▆▃▄▃-906.0-1109.0-448.0-247.0-463.0-285.0-1303.0-329.0-1043.027.0-943.0-1222.0-1264.0929.0-385.0-1212.0-152.0-430.0352.0-447.0-481.0-692.0170.0-450.059.0-298.0-288.019.0-325.0-489.0217.0-621.0-283.0-545.0NA401.0-366.0-180.0-523.0483.0-1200.0192.0-888.0381.0-409.0-729.0-470.0NANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▃▄▆▅█▁31.0-174.0231.0507.0396.01037.0-563.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:DeferredIncomeTaxExpenseBenefit ▇▇▇▇▇▇▇▇▇▇█▇▇▇▁▇▇▇▇█▇▇█▇▇▇█▇▇▇▇▇▇▇26.040.063.056.033.028.087.089.046.051.0131.050.044.054.0-3394.049.053.059.093.0147.085.080.0374.049.027.06.0208.04.087.0-1.071.057.090.082.0NA136.0156.0105.0195.0123.0206.0143.0137.0335.060.033.046.0NANANANA
us-gaap:IncreaseDecreaseInAccountsPayable ▅▆▄▆▁▄▂█▃▆▃█▂▆▂▇▁▇▂▇▃▆▂▆▁▅▃▆▂▅▂▆▃▆20.053.0-14.079.0-99.014.0-54.0113.0-35.074.0-36.0129.0-53.064.0-61.096.0-85.091.0-54.094.0-50.050.0-82.071.0-92.024.0-19.070.0-80.030.0-57.057.0-20.048.0NA-63.0141.0-150.069.0-33.082.052.0-17.052.061.0-8.0-26.0NANANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▇▇▃█▁▆▃▄▅▇▄▆▅▆▅▄▇▆▅▅▅▃▄▄▃▅▅▇▅▆▃▇▄▆63.064.0-71.0108.0-147.027.0-84.0-22.05.056.0-51.050.0-3.050.0-8.0-25.073.030.0-16.0-2.0-9.0-57.0-23.0-25.0-82.0-19.03.056.014.046.0-70.062.0-28.042.0NA-67.02.0-24.022.0-76.030.0194.0-75.07.052.0-81.024.0NANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▆▆▄▅▆▅█▅▆▆▇▅▄▂▇▁▅▁▄▃▃▃▄▄▂▅▃▃▂▃▄▃▃1167.01232.01135.0944.01006.01178.01113.01470.01094.01173.01235.01397.01043.0966.0611.01295.0523.01043.0553.0896.0838.0754.0858.0930.0892.0690.01041.0857.0846.0599.0768.0920.0848.0731.0NA642.01013.0847.0444.0906.0998.01081.0506.0969.0855.0678.0744.0NANANANA
us-gaap:NetIncomeLoss ▃▂▂▂▁▂▂▂▂▂▂▂▂▂█▁▁▁▁▁▁▁▁▁▂▁▁▁▂▁▁▁▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1173.0706.0760.0736.0499.0770.0771.0856.0870.0834.0843.0894.0877.0695.04140.0459.0510.0362.0458.0455.0445.0356.0466.0507.0553.0442.0491.0509.0529.0398.0426.0463.0535.0462.0449.0443.0455.0512.0449.0457.0464.0506.0395.0430.0414.0414.0305.0303.0290.0305.0245.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▅▅▆▆█▅▄▅▂▇▂▅▅▅▇▃▆▂▅▄▇▂▅▁▄▄▂▅▆▂▅▃▆-230.0-297.0-456.0-190.0-147.0144.0-373.0-473.0-386.0-870.0-97.0-832.0-439.0-316.0-416.0-112.0-681.0-286.0-905.0-412.0-522.041.0-941.0-377.0-1074.0-500.0-563.0-970.0-423.0-227.0-984.0-322.0-656.0-265.0NA-952.0-596.0-652.0-77.0-1186.0-470.0-555.0-376.0-694.0-443.0-309.0-310.0NANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▃▁▂▂▂▂▃▂▂▂▃▂▃▂▄▃▃▃▇▄▅▂▅▅▆▄█▅▃▃▅▅▄▃448.0306.0417.0408.0420.0381.0466.0422.0416.0353.0505.0417.0455.0368.0578.0507.0514.0441.0808.0524.0641.0425.0653.0621.0690.0598.0892.0601.0481.0475.0626.0602.0594.0491.0NA511.0607.0754.0469.0861.0489.0557.0390.0722.0416.0359.0328.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▄▄▄▄▁▄▂▅▂▁▁█▄▁▅▄▆▄▄▃▆▄▅▄▄▅▄▄▆▃▄▃-906.0-1109.0-448.0-247.0-463.0-285.0-1303.0-329.0-1043.027.0-943.0-1222.0-1264.0929.0-385.0-1212.0-152.0-430.0352.0-447.0-481.0-692.0170.0-450.059.0-298.0-288.019.0-325.0-489.0217.0-621.0-283.0-545.0NA401.0-366.0-180.0-523.0483.0-1200.0192.0-888.0381.0-409.0-729.0-470.0NANANANA
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANA500.00.00.0500.00.01000.00.01000.01000.00.00.02000.00.00.0850.00.02200.00.0NANA600.00.0NANA0.01000.0NANA500.00.00.00.0NA800.00.00.0300.0600.00.0600.00.0800.00.0NANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:BalanceSheetLocation csx:LongTermLiabilitiesNANANA0.00.0500.0NA1000.00.01000.0NA0.00.02000.0NA0.0NANANANANANANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RepaymentsOfLongTermDebt ▁▆█▁0.0360.0500.018.0NANA500.018.0NANA0.0NANANA1.019.0NANANANANANANANANANANANA35.0209.01.0324.042.0413.0NA27.026.042.0413.010.025.046.0524.010.032.054.017.0NANANANA
 us-gaap:RepaymentsOfLongTermDebt us-gaap:BalanceSheetLocation csx:CurrentLiabilities▁█0.0360.0NA18.0NANANANANANANANANANANA19.0NANANANANANANANANANANANA35.0209.0NANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsOfDividendsCommonStock ██▆▇▇▇▅▆▆▆▅▅▆▆▄▅▅▃▃▄▄▄▄▄▄▂▃▃▃▂▂▂▂▁212.0213.0198.0199.0199.0201.0186.0189.0193.0195.0181.0186.0190.0194.0178.0180.0184.0166.0167.0169.0171.0173.0174.0176.0178.0158.0159.0159.0160.0151.0152.0152.0153.0143.0NA143.0NANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▄▃▂▁▁▃▃▅▄▄█▅▅▄▂▅▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁701.0551.0203.048.039.0577.0606.01111.0860.0796.01871.01000.0974.0836.0207.01000.0499.0258.0278.0263.0266.0249.0258.0262.0157.0127.0129.0131.0131.0127.0129.0129.095.00.0NA234.0NANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value22547577637657657657737827988098188448598758908949139239289379469569669759849889929951000100410091014101910221020103110401039104910501095368370393
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.61.91.91.92.02.02.02.02.12.12.22.32.32.32.52.52.52.62.62.72.72.82.82.92.93.03.03.03.13.23.23.33.33.33.33.43.53.63.63.73.81.31.31.5

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2020-12-31
Value763
Percentage of CommonStockSharesIssued100.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


Common
Period End2020-12-31
Value1800
Percentage of CommonStockSharesAuthorized100.0

Preferred Stock Shares Authorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized


Preferred
Period End2020-12-31
Value25
Percentage of PreferredStockSharesAuthorized100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2020-12-312010-12-312009-12-252008-12-262007-12-28
Value763370393390407
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-252008-12-26
Value2254757762764765765773782798809818844858875889928965991100810201049111111801171
Percentage of CommonStockSharesOutstanding0.00.099.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0300.0300.0300.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-09-252015-06-262015-03-272014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-252010-03-26
Value2275762767767773792807817854868888906924929943952963982989992999100310081018102310231040104310491077110937111451159394
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-09-252015-06-262015-03-272014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-252010-03-26
Value2270761765766772790805814850864885902920927942952962981988991999100310081017102210221038104110471071110236911341149391
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-25
Value2000000.01000000.02000000.02400000.01400000.01000000.0900000.0600000.07000.01000000.0800000.010000000.010000000.03000000.02400000.05000000.04000000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value0.520.931.00.960.651.00.991.081.081.021.021.051.020.784.630.510.550.390.490.480.470.370.480.520.560.450.490.510.530.40.420.460.520.450.440.430.440.490.430.440.430.461.071.151.091.080.780.770.740.780.63
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value0.520.930.990.960.651.00.991.081.081.021.011.051.010.784.620.510.550.390.490.480.470.370.480.520.560.450.490.510.530.40.420.460.520.450.440.430.440.490.430.430.430.461.061.141.081.070.780.770.730.770.62
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value2732-3.020-12.0243113171313131213-12.0194438139.07.08.0-8.02.010.08.0139.06.05.05.07.05.0-3.04.06.04.00.00.07.0111216139.023
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.10.00.8-0.50.81.10.40.60.40.40.40.40.5-0.40.71.51.30.40.30.30.3-0.30.10.30.30.40.30.20.20.20.20.2-0.10.10.20.10.00.00.20.40.40.60.50.30.9

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

csx:StockAwardsDirectors


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-25
Value0.02.03.00.00.02.00.00.00.02.00.00.00.02.01.00.00.02.00.00.00.02.0
Percentage of AllocatedShareBasedCompensationExpense0.06.2-100.00.0-0.08.30.00.00.015.40.00.00.015.4-8.30.00.05.30.00.00.025.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.00.00.00.10.00.00.00.10.00.00.00.10.00.00.00.10.00.00.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:StockAwardsDirectors0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EmployeeStock


Allocated
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1.01.01.01.01.01.01.01.00.00.00.0
Percentage of AllocatedShareBasedCompensationExpense3.73.15.0-8.34.27.75.97.70.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EmployeeStock0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EmployeeStockOption


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-25
Value4.06.03.03.03.010.09.02.05.02.03.04.02.04.0-25.01421122.02.01.02.0
Percentage of AllocatedShareBasedCompensationExpense14.818.8-100.015.0-25.041.729.015.429.415.423.130.816.730.8208.373.747.731.615.422.214.325.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.00.10.10.40.30.10.20.10.10.10.10.1-0.90.50.70.40.10.10.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EmployeeStockOption0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PerformanceShares


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-25
Value2018-9.014-17.09.0198.09.06.06.08.08.06.08.03.018208.05.03.01.0
Percentage of AllocatedShareBasedCompensationExpense74.156.2300.070.0141.737.561.361.552.946.246.261.566.746.2-66.715.840.952.661.555.642.912.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.60.00.5-0.80.30.70.30.30.20.20.30.30.20.30.10.60.70.30.20.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:PerformanceShares0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


Allocated
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-25
Value2.05.02.01.02.02.02.02.02.01.02.01.04.02.05.04.03.02.03.03.0
Percentage of AllocatedShareBasedCompensationExpense7.415.610.0-8.38.315.411.815.415.47.716.77.7-33.310.511.410.523.122.242.937.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.10.00.10.10.10.10.10.00.10.00.10.10.20.10.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RestrictedStockUnitsRSU0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value11527747807705197737448638748367229018815964215467575368418465454363477518565440308518544414770479552476340471529458300473519406400431424317
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax38.527.50.029.123.027.125.829.028.627.723.028.828.420.7147.217.019.612.813.817.216.813.917.217.618.414.59.616.116.813.725.416.018.016.111.816.317.615.410.216.017.214.414.216.215.912.7

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-25
Value15309379949686521013981112511461064109811501144912983750827582751715707568741799887711775813850606642723832725718721809716712746792638701702642
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax51.233.30.036.628.935.534.037.837.435.334.936.836.931.734.327.328.220.324.726.426.121.726.627.228.923.524.325.226.220.121.224.127.124.524.924.926.924.124.125.226.222.724.926.324.1

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value357231234232153243210269276230255256267217-3157.0291317220293260262212275292334269284304321208235260297266275266297267255282286243271288228196
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.98.20.08.86.88.57.39.09.07.68.18.28.67.5-110.310.610.87.79.69.69.78.19.99.910.98.98.99.49.96.97.88.79.79.09.59.29.99.08.69.59.58.69.610.88.67.9

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-181.0-184.0-189.0-187.0-191.0-187.0-189.0-186.0-184.0-178.0
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-6.1-6.50.0-7.1-8.5-6.5-6.6-6.2-6.0-5.9

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value11737067607364997707718568708348438948776954140459510362458455445356466507553442491509529398426463535462449443455512449457464506395430414414305303290305245
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.225.10.027.822.127.026.728.728.427.726.828.628.324.2144.616.717.412.615.116.816.513.616.817.318.014.615.415.816.313.214.115.417.415.615.515.415.717.015.115.515.716.814.115.315.515.512.213.112.714.010.9

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1173706736499770856870834894877695
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.225.127.822.127.028.728.427.728.628.324.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-26
Value2020-32.014152216242523201918172.06.06.07.018138.07.0902.04.02.07.0-26.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.70.00.50.70.80.60.80.80.80.60.60.60.60.10.20.20.20.60.50.30.33.20.10.10.10.2-0.8

Operating Costs And Expenses

us-gaap:OperatingCostsAndExpenses

us-gaap:OperatingCostsAndExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-25
Value1299171216101507142716771731169117561794559627624610621629632576560507539525550542580562557530496509551
Percentage of OperatingCostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.460.90.056.963.358.760.056.857.459.518.220.719.518.919.120.920.819.218.217.118.718.118.318.319.719.018.418.917.619.120.7

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value1691110112151141828117811541287130512191249129312831044112187695871210048418407047919331017843901976997739813854963880815804854943856841878926773846825768632579594577520
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax56.639.10.043.136.741.340.043.242.640.539.741.341.436.339.231.932.724.833.131.031.126.928.431.733.227.828.230.330.724.526.828.531.429.728.227.929.531.328.928.529.630.727.530.030.928.825.425.026.026.423.1

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value299028132825264822552855288529783061301331433129310228762863274329332869303727102704261827812939306430273192322132443012303229993069296328952884289430122966295129633019281028162666266324912320228921852247
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

csx:AgriculturalandFoodProducts


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value370349375335311365354354358344347325327307321288321332
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.412.413.312.713.812.812.311.911.711.411.010.410.510.711.210.510.911.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.412.413.312.713.812.812.311.911.711.411.010.410.510.711.210.510.911.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:AgriculturalandFoodProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:Automotive


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value21623627527193281299297329311333300330304303269307316
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.28.49.710.24.19.810.410.010.710.310.69.610.610.610.69.810.511.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.28.49.710.24.19.810.410.010.710.310.69.610.610.610.69.810.511.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:Automotive100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:Chemicals


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value606580586566531626577589591586598596588557546546552566
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.320.620.721.423.521.920.019.819.319.419.019.019.019.419.119.918.819.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.320.620.721.423.521.920.019.819.319.419.019.019.019.419.119.918.819.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:Chemicals100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:CoalServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value423384375330287405459516557538586588569503541514530522
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.113.713.312.512.714.215.917.318.217.918.618.818.317.518.918.718.118.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.113.713.312.512.714.215.917.318.217.918.618.818.317.518.918.718.118.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:CoalServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:Fertilizers


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value12212211396103112108101112110110104112116113106118129
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.14.34.03.64.63.93.73.43.73.73.53.33.64.03.93.94.04.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.14.34.03.64.63.93.73.43.73.73.53.33.64.03.93.94.04.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:Fertilizers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:ForestProducts


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value233220207206194217214225223216217223215195188181194192
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.87.87.37.88.67.67.47.67.37.26.97.16.96.86.66.66.66.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.87.87.37.88.67.67.47.67.37.26.97.16.96.86.66.66.66.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:ForestProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:Intermodal


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value511468476445359422449447436428492500490449471446448434
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.116.616.816.815.914.815.615.014.214.215.716.015.815.616.516.315.315.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.116.616.816.815.914.815.615.014.214.215.716.015.815.616.516.315.315.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:Intermodal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:MetalsandEquipment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value204186175159142199170195187189180205198186157178178190
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.86.66.26.06.37.05.96.56.16.35.76.66.46.55.56.56.16.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.86.66.26.06.37.05.96.56.16.35.76.66.46.55.56.56.16.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:MetalsandEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:Minerals


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value152125133144134127138145144123130137137114115120128114
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.14.44.75.45.94.44.84.94.74.14.14.44.44.04.04.44.44.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.14.44.75.45.94.44.84.94.74.14.14.44.44.04.04.44.44.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:Minerals100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:OtherServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value153143110961011011171091241681501511361451089515774
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.15.13.93.64.53.54.13.74.15.64.84.84.45.03.83.55.42.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.15.13.93.64.53.54.13.74.15.64.84.84.45.03.83.55.42.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:OtherServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:TotalMerchandise


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value190318181864177715081927186019061944187919151890190717791743168817981839
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.664.666.067.166.967.564.564.063.562.460.960.461.561.960.961.561.364.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.664.666.067.166.967.564.564.063.562.460.960.461.561.960.961.561.364.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax csx:TotalMerchandise100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value299028132825264822552855288529783061301331433129310228762863274329332869303727102704261827812939306430273192322132443012303229993069296328952884289430122966295129633019281028162666266324912320228921852247
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value4001539692397933944338904388343825738795379243815436729368613692437439357393557335861357123541434681345503461035039340153377733161330533262331975316803178230943308813058630571299302958929186294732824828705275772814126887
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value2658126532266832671626741269462639426916256342570924149231262290123048210182467124260240432372023011229252300423371223552220021823218772148121071210352127821075212192123821569208992069420682210051998019764188211944118119
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.466.867.167.768.769.469.069.467.667.465.762.762.061.658.869.467.767.367.066.466.466.566.765.765.765.866.265.865.966.466.968.168.769.470.669.869.970.971.370.768.968.269.167.4

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value4001539692397933944338904388343825738795379243815436729368613692437439357393557335861357123541434681345503461035039340153377733161330533262331975316803178230943308813058630571299302958929186294732824828705275772814126887
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:StockholdersEquity

csx:AccumulatedOtherAdjustmentstoParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-62.0-64.0-62.0-62.0-64.0-65.0-56.0-58.0-60.0-60.0-57.0-50.0-48.0-45.0-46.0-57.0-59.0-61.0-60.0-62.0-64.0-65.0-64.0-67.0-66.0-55.0
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2
Percentage of Assets csx:AccumulatedOtherAdjustmentstoParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-572.0-584.0-598.0-590.0-597.0-607.0-619.0-590.0-595.0-599.0-604.0-524.0-533.0-540.0-440.0-504.0-510.0-573.0-580.0-577.0-585.0-593.0-601.0-578.0-590.0-611.0
Percentage of StockholdersEquity922.6912.5964.5951.6932.8933.81105.41017.2991.7998.31059.61048.01110.41200.0956.5884.2864.4939.3966.7930.6914.1912.3939.1862.7893.91110.9
Percentage of Assets-1.4-1.5-1.5-1.5-1.5-1.6-1.6-1.5-1.6-1.6-1.6-1.4-1.4-1.4-1.2-1.4-1.4-1.6-1.6-1.7-1.7-1.7-1.7-1.7-1.7-1.8
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value8311862349.00.0
Percentage of StockholdersEquity-133.9-184.4-100.0-54.8-14.1-0.0
Percentage of Assets0.20.30.20.10.00.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-551.0-530.0-598.0-618.0-652.0-672.0-675.0-648.0-655.0-659.0-661.0-574.0-581.0-585.0-486.0-561.0-569.0-634.0-640.0-639.0-649.0-658.0-665.0-645.0-656.0-666.0
Percentage of StockholdersEquity888.7828.1964.5996.81018.81033.81205.41117.21091.71098.31159.61148.01210.41300.01056.5984.2964.41039.31066.71030.61014.11012.31039.1962.7993.91210.9
Percentage of Assets-1.4-1.3-1.5-1.6-1.7-1.7-1.8-1.7-1.7-1.7-1.8-1.6-1.6-1.6-1.4-1.6-1.6-1.8-1.8-1.8-1.9-1.9-1.9-1.9-1.9-2.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value45734305444142283791382132783960318634792565278428813542191521722630266024872163222826082966250226692457257226762372228926022200248925672801239323722468293523012967217128552570
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.410.811.210.79.79.88.610.28.49.17.07.67.89.55.46.17.37.47.06.26.47.58.57.47.97.47.88.27.47.28.27.18.18.49.28.08.08.510.08.110.37.910.19.6

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252008-12-262007-12-28
Value31299581521853118885866313201980401591620930603603566731628541438561669479573475592591614705784693642627783580125253412926366339931029669368
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.92.53.92.23.12.31.83.65.31.11.71.72.61.71.71.62.11.81.61.31.72.01.51.81.51.91.92.02.32.62.32.22.12.72.14.41.94.60.00.00.03.80.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value29862955312928982391199595815218531188858401
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.57.47.97.36.15.12.53.92.23.12.31.1

Short Term Investments

us-gaap:ShortTermInvestments

us-gaap:ShortTermInvestments


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value4.02.02.01.020348799610378788222536158310.01811347728741715226237581042568025729257521624848712840336758735411395236143565461
Percentage of ShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.51.32.62.72.32.20.71.70.20.00.10.31.30.81.20.40.81.12.31.22.00.80.91.80.70.81.50.41.31.21.90.10.10.51.80.20.10.20.20.2

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value1192957912980860100898611011111110610101090103610459709811015943938925912917982100310221103112911231062107310529819469769621163113611611129114811121068993995
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.02.42.32.52.22.62.62.82.92.92.73.02.82.82.72.82.82.62.62.72.62.62.82.93.03.33.43.43.33.43.33.23.13.23.13.93.84.03.84.13.93.93.53.7

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value1029396969174776612212218113311613815495908512286898370871029968951239164851181037510412511278112123102106124
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.20.20.20.20.20.20.20.30.30.50.40.30.40.40.30.30.20.30.20.30.20.20.30.30.30.20.30.40.30.20.30.40.30.20.30.40.40.30.40.40.40.40.5

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value4571445593455304540945327450654510045012447564482644805444854430644103440004410543751433994300042720423454186542000408434031339824393433853338010376043718436637361493567435279350203461634002337043314132777323603206530907
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets114.2114.9114.4115.1116.5116.0117.9116.0118.0117.5122.0120.7120.0117.8123.1124.0122.0121.5121.4123.2122.6121.0119.9120.1119.4120.1119.0118.1118.9118.7117.0118.4117.1116.6115.4117.0117.0116.5114.4117.3114.2117.3113.9115.0

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

csx:EquipmentFreightCars


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value255729643093326233863362324431113088282126532672
Percentage of PropertyPlantAndEquipmentGross5.66.66.97.47.98.08.28.48.88.48.38.6
Percentage of Assets6.47.78.49.19.69.69.89.810.19.69.49.9
Percentage of Assets csx:EquipmentFreightCars0.00.00.00.00.00.00.00.00.00.00.00.0

csx:EquipmentLocomotive


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value508553205661608361105673503649874747445543544358
Percentage of PropertyPlantAndEquipmentGross11.211.812.613.814.213.512.813.413.513.213.614.1
Percentage of Assets12.813.915.417.017.316.215.215.715.515.115.516.2
Percentage of Assets csx:EquipmentLocomotive0.00.00.00.00.00.00.00.00.00.00.00.0

csx:EquipmentWorkEquipmentAndOther


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value2585242423382261210820731828166614661345436436
Percentage of PropertyPlantAndEquipmentGross5.75.45.25.14.94.94.64.54.24.01.41.4
Percentage of Assets6.56.36.46.36.05.95.55.24.84.61.51.6
Percentage of Assets csx:EquipmentWorkEquipmentAndOther0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadBallast


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value323831563076299428972793269326122528244623722279
Percentage of PropertyPlantAndEquipmentGross7.17.06.96.86.76.76.87.07.27.37.47.4
Percentage of Assets8.18.28.48.48.28.08.18.28.38.38.48.5
Percentage of Assets csx:RoadBallast0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadBridgesTrestlesAndCulverts


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value268825292506240523062238211920081962188718151765
Percentage of PropertyPlantAndEquipmentGross5.95.65.65.55.45.35.45.45.65.65.75.7
Percentage of Assets6.86.66.86.76.56.46.46.36.46.46.46.6
Percentage of Assets csx:RoadBridgesTrestlesAndCulverts0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadBuildings


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value13661335131812781238115211021011926874750715
Percentage of PropertyPlantAndEquipmentGross3.03.02.92.92.92.72.82.72.62.62.32.3
Percentage of Assets3.43.53.63.63.53.33.33.23.03.02.72.7
Percentage of Assets csx:RoadBuildings0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadGrading


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value276827632757266226002533246024252407237923682351
Percentage of PropertyPlantAndEquipmentGross6.16.16.26.06.06.06.36.56.87.17.47.6
Percentage of Assets7.07.27.57.47.37.27.47.67.98.18.48.7
Percentage of Assets csx:RoadGrading0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadOther


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value514650304955463445664306407036543345303825272254
Percentage of PropertyPlantAndEquipmentGross11.311.211.110.510.610.310.39.89.59.07.97.3
Percentage of Assets12.913.113.513.012.912.312.311.510.910.39.08.4
Percentage of Assets csx:RoadOther0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadRailAndOtherTrackMaterial


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value844981947964769473267150677164526177594955685406
Percentage of PropertyPlantAndEquipmentGross18.618.217.817.517.017.017.217.417.517.717.417.5
Percentage of Assets21.221.421.721.520.720.420.520.320.220.219.820.1
Percentage of Assets csx:RoadRailAndOtherTrackMaterial0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadSignalsAndInterlockers


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value317030772975275925232315210319221787168016101565
Percentage of PropertyPlantAndEquipmentGross7.06.86.66.35.95.55.35.25.15.05.05.1
Percentage of Assets8.08.08.17.77.16.66.46.05.85.75.75.8
Percentage of Assets csx:RoadSignalsAndInterlockers0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadTies


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value628460415860566553685077480745344287412638963678
Percentage of PropertyPlantAndEquipmentGross13.813.413.112.912.512.112.212.212.212.212.211.9
Percentage of Assets15.815.816.015.915.214.514.514.314.014.013.813.7
Percentage of Assets csx:RoadTies0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadTotal


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value331093212531411300912882427564261252461823419223792090620013
Percentage of PropertyPlantAndEquipmentGross72.771.270.168.467.065.666.466.266.466.465.264.8
Percentage of Assets83.284.085.584.281.478.779.077.576.675.974.374.4
Percentage of Assets csx:RoadTotal0.00.00.00.00.00.00.00.00.00.00.00.0

csx:TotalEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value1022710708110921160611604111081010897649301862174437466
Percentage of PropertyPlantAndEquipmentGross22.523.724.826.427.026.425.726.326.425.623.224.2
Percentage of Assets25.728.030.232.532.831.730.630.730.429.326.427.8
Percentage of Assets csx:TotalEquipment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value37143145777891310031196854602728529336
Percentage of PropertyPlantAndEquipmentGross0.81.01.01.82.12.43.02.31.72.21.61.1
Percentage of Assets0.91.11.22.22.62.93.62.72.02.51.91.2
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Land


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value182318361845184918331858187518421745183218751937
Percentage of PropertyPlantAndEquipmentGross4.04.14.14.24.34.44.85.04.95.45.86.3
Percentage of Assets4.64.85.05.25.25.35.75.85.76.26.77.2
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value13228131901308613028130661287712932129341273712838128071261412459123551256012526123241214012077119381173811572114001120611063109521075910539103251011098939691955093869229908889848861873087238575844582667843
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.133.232.933.033.633.233.833.333.633.634.934.233.733.035.135.234.434.034.134.434.033.432.532.932.833.032.632.332.331.931.131.330.930.730.230.430.430.429.630.929.930.629.429.2

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType

csx:EquipmentFreightCars


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value54088088299810461018116911351119109510961142
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment4.16.86.97.98.78.910.911.512.112.513.314.6
Percentage of Assets1.42.32.42.83.02.93.53.63.73.73.94.2
Percentage of Assets csx:EquipmentFreightCars0.00.00.00.00.00.00.00.00.00.00.00.0

csx:EquipmentLocomotive


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value184920202266249025042461232521762079196018521716
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment14.115.617.719.820.721.621.622.022.522.522.421.9
Percentage of Assets4.65.36.27.07.17.07.06.86.86.76.66.4
Percentage of Assets csx:EquipmentLocomotive0.00.00.00.00.00.00.00.00.00.00.00.0

csx:EquipmentWorkEquipmentAndOther


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value1559141413361282119011541032914810746199180
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment11.910.910.410.29.910.19.69.28.88.52.42.3
Percentage of Assets3.93.73.63.63.43.33.12.92.62.50.70.7
Percentage of Assets csx:EquipmentWorkEquipmentAndOther0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadBallast


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value10511013971921860802679645624610605585
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment8.07.87.67.37.17.06.36.56.87.07.37.5
Percentage of Assets2.62.62.62.62.42.32.12.02.02.12.12.2
Percentage of Assets csx:RoadBallast0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadBridgesTrestlesAndCulverts


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value380334382356317283278250224195170116
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment2.92.63.02.82.62.52.62.52.42.22.11.5
Percentage of Assets1.00.91.01.00.90.80.80.80.70.70.60.4
Percentage of Assets csx:RoadBridgesTrestlesAndCulverts0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadBuildings


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value529492486464447424377355316342253187
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment4.03.83.83.73.73.73.53.63.43.93.12.4
Percentage of Assets1.31.31.31.31.31.21.11.11.01.20.90.7
Percentage of Assets csx:RoadBuildings0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadGrading


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value614595572542514479481448414382348283
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment4.74.64.54.34.34.24.54.54.54.44.23.6
Percentage of Assets1.51.61.61.51.51.41.51.41.41.31.21.1
Percentage of Assets csx:RoadGrading0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadOther


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value210119801964186719051793151713861281127310141011
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment16.115.315.314.915.815.714.114.013.914.612.312.9
Percentage of Assets5.35.25.35.25.45.14.64.44.24.33.63.8
Percentage of Assets csx:RoadOther0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadRailAndOtherTrackMaterial


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value1739171916981606149314141400127011311021937870
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment13.313.313.312.812.412.413.012.812.311.711.311.1
Percentage of Assets4.44.54.64.54.24.04.24.03.73.53.33.2
Percentage of Assets csx:RoadRailAndOtherTrackMaterial0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadSignalsAndInterlockers


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value944819693588496416356291302198183232
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment7.26.35.44.74.13.63.32.93.32.32.23.0
Percentage of Assets2.42.11.91.61.41.21.10.91.00.70.70.9
Percentage of Assets csx:RoadSignalsAndInterlockers0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadTies


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value1780166615571446129211471060947861868807748
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment13.612.912.211.510.710.19.99.69.39.99.89.5
Percentage of Assets4.54.44.24.03.63.33.23.02.82.92.92.8
Percentage of Assets csx:RoadTies0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadTotal


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value913886188323779073246758614855925153488943174032
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment69.866.665.062.060.659.357.156.555.856.052.251.4
Percentage of Assets23.022.522.721.820.719.318.617.616.916.615.315.0
Percentage of Assets csx:RoadTotal0.00.00.00.00.00.00.00.00.00.00.00.0

csx:TotalEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value394843144484477047404633452642254008380131473038
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment30.233.435.038.039.240.642.142.743.443.538.138.7
Percentage of Assets9.911.312.213.313.413.213.713.313.112.911.211.3
Percentage of Assets csx:TotalEquipment0.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value3248632403324443238132261321883216832078320193198831998318713184731748317643157931427312593115030782306073029330174296372925028872285842799427685274942729126946265992628826050259322563225141249742441824202239152379923064
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets81.281.681.582.182.982.984.182.784.483.887.186.586.384.888.988.887.687.588.088.888.687.586.187.186.687.186.585.886.686.885.987.186.185.985.286.686.686.184.786.484.386.784.685.8

us-gaap:PropertyPlantAndEquipmentNet us-gaap:PropertyPlantAndEquipmentByType

csx:EquipmentFreightCars


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value201720842211226423402344207519761969172615571530
Percentage of PropertyPlantAndEquipmentNet6.26.56.97.17.57.87.37.27.66.96.56.6
Percentage of Assets5.15.46.06.36.66.76.36.26.45.95.55.7
Percentage of Assets csx:EquipmentFreightCars0.00.00.00.00.00.00.00.00.00.00.00.0

csx:EquipmentLocomotive


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value323633003395359336063212271128112668249525022642
Percentage of PropertyPlantAndEquipmentNet10.010.310.611.311.610.69.510.310.210.010.511.5
Percentage of Assets8.18.69.210.110.29.28.28.88.78.58.99.8
Percentage of Assets csx:EquipmentLocomotive0.00.00.00.00.00.00.00.00.00.00.00.0

csx:EquipmentWorkEquipmentAndOther


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value102610101002979918919796752656599237256
Percentage of PropertyPlantAndEquipmentNet3.23.13.13.12.93.02.82.82.52.41.01.1
Percentage of Assets2.62.62.72.72.62.62.42.42.12.00.81.0
Percentage of Assets csx:EquipmentWorkEquipmentAndOther0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadBallast


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value218721432105207320371991201419671904183617671694
Percentage of PropertyPlantAndEquipmentNet6.76.76.66.56.56.67.07.27.37.47.47.3
Percentage of Assets5.55.65.75.85.85.76.16.26.26.26.36.3
Percentage of Assets csx:RoadBallast0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadBridgesTrestlesAndCulverts


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value230821952124204919891955184117581738169216451649
Percentage of PropertyPlantAndEquipmentNet7.16.86.66.56.46.56.46.46.76.86.97.1
Percentage of Assets5.85.75.85.75.65.65.65.55.75.75.86.1
Percentage of Assets csx:RoadBridgesTrestlesAndCulverts0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadBuildings


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value837843832814791728725656610532497528
Percentage of PropertyPlantAndEquipmentNet2.62.62.62.62.52.42.52.42.32.12.12.3
Percentage of Assets2.12.22.32.32.22.12.22.12.01.81.82.0
Percentage of Assets csx:RoadBuildings0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadGrading


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value215421682185212020862054197919771993199720202068
Percentage of PropertyPlantAndEquipmentNet6.66.76.86.76.76.86.97.27.78.08.59.0
Percentage of Assets5.45.75.95.95.95.96.06.26.56.87.27.7
Percentage of Assets csx:RoadGrading0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadOther


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value304530502991276726612513255322682064176515131243
Percentage of PropertyPlantAndEquipmentNet9.49.59.38.78.58.38.98.37.97.16.45.4
Percentage of Assets7.78.08.17.77.57.27.77.16.86.05.44.6
Percentage of Assets csx:RoadOther0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadRailAndOtherTrackMaterial


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value671064756266608858335736537151825046492846314536
Percentage of PropertyPlantAndEquipmentNet20.720.119.619.218.719.018.819.019.419.719.519.7
Percentage of Assets16.916.917.117.016.516.416.216.316.516.716.516.9
Percentage of Assets csx:RoadRailAndOtherTrackMaterial0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadSignalsAndInterlockers


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value222622582282217120271899174716311485148214271333
Percentage of PropertyPlantAndEquipmentNet6.97.07.16.86.56.36.16.05.75.96.05.8
Percentage of Assets5.65.96.26.15.75.45.35.14.95.05.15.0
Percentage of Assets csx:RoadSignalsAndInterlockers0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadTies


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value450443754303421940763930374735873426325830892930
Percentage of PropertyPlantAndEquipmentNet13.913.613.413.313.113.013.113.113.213.013.012.7
Percentage of Assets11.311.411.711.811.511.211.311.311.211.111.010.9
Percentage of Assets csx:RoadTies0.00.00.00.00.00.00.00.00.00.00.00.0

csx:RoadTotal


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value239712350723088223012150020806199771902618266174901658915981
Percentage of PropertyPlantAndEquipmentNet73.973.172.270.269.069.069.969.770.170.069.769.3
Percentage of Assets60.261.462.962.460.759.460.459.959.759.358.959.4
Percentage of Assets csx:RoadTotal0.00.00.00.00.00.00.00.00.00.00.00.0

csx:TotalEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value627963946608683668646475558255395293482042964428
Percentage of PropertyPlantAndEquipmentNet19.419.920.721.522.021.519.520.320.319.318.119.2
Percentage of Assets15.816.718.019.119.418.516.917.417.316.415.316.5
Percentage of Assets csx:TotalEquipment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value37143145777891310031196854602728529336
Percentage of PropertyPlantAndEquipmentNet1.11.31.42.42.93.34.23.12.32.92.21.5
Percentage of Assets0.91.11.22.22.62.93.62.72.02.51.91.2
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Land


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value182318361845184918331858187518421745183218751937
Percentage of PropertyPlantAndEquipmentNet5.65.75.85.85.96.26.66.76.77.37.98.4
Percentage of Assets4.64.85.05.25.25.35.75.85.76.26.77.2
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.00.00.0

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures


Investments
Period End2021-06-302021-03-312020-12-312019-12-312011-07-012011-04-012010-12-312009-12-25
Value2033200719851879477464461438
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.15.15.04.91.71.71.61.6

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization

csx:AffiliatesAndOtherCompanies


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302010-12-31
Value937920908897880863845836823810796779642631622619603595591591583579575577570563558546526519512511502496495493481461
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures0.00.00.047.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0
Percentage of Assets2.42.42.32.32.32.32.22.32.22.22.12.21.81.81.71.71.71.71.71.71.71.71.71.71.71.81.81.71.71.71.71.71.71.71.71.71.71.6
Percentage of Assets csx:AffiliatesAndOtherCompanies0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

csx:InvestmentsInJointVentures


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302010-12-31
Value10121001993982969959948943941931918907864856847840830818811803793787778779775768756752715709703695693687683678687673
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures0.00.00.052.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0146.0
Percentage of Assets2.62.62.62.62.52.52.52.62.62.52.52.52.42.42.42.42.42.42.32.32.32.32.32.42.42.42.42.42.32.32.32.32.32.32.32.32.42.4
Percentage of Assets csx:InvestmentsInJointVentures0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4624674725005125235325395505500.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.21.21.21.31.31.31.41.41.51.40.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value461510451385419401400369347344387442455435374316317324318303302307505500492479541608587583591556565516514410402399393361378351353165
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.31.11.01.11.01.01.00.90.91.11.21.21.21.00.90.90.90.90.90.90.91.41.51.51.41.61.91.81.81.91.81.81.71.71.41.41.41.31.31.31.31.30.6

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value87985980910429601058104311019891019949982852905847905810898806859766815764842772858845986900975957107810221043101411971055120511471170107610241046967
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.22.02.62.52.72.72.82.62.72.62.72.32.42.42.52.32.52.32.52.22.42.22.52.32.62.63.02.83.13.03.53.33.43.34.03.64.13.94.13.73.73.73.6

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value19511800201922942347221121512805205319261915194417321891189420751672227720402263228216921952192217782038210722312797221224242251241824742627302125752593268725682485222225371865
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.94.55.15.86.05.75.67.25.45.05.25.34.75.15.35.84.76.45.86.56.64.95.65.75.36.16.46.88.77.07.67.37.88.18.610.18.78.99.19.18.78.19.06.9

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2020-12-312019-12-31
Value4557
Percentage of OperatingLeaseLiabilityCurrent100.0100.0
Percentage of Assets0.10.1

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value1591551642011741852052081641781791511381441611061271871141091501594391871191131161081281131051111191381401721791921801011689297100
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.50.40.50.50.50.40.50.50.40.40.40.50.30.40.50.30.30.40.51.30.50.40.30.40.30.40.40.30.40.40.50.50.60.60.70.60.40.60.30.30.4

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value2422377314038026969155133193106166123274157322953021299013717010828224328816324922924691138111206852612281341291291379385112
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.20.41.00.70.20.40.40.50.30.50.30.70.40.90.30.80.40.30.40.50.30.80.70.90.50.80.70.80.30.40.40.70.30.90.80.50.40.50.50.30.30.4

Debt And Capital Lease Obligations

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:DebtAndCapitalLeaseObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012010-12-31
Value1635116347167051649216506167321623816737157671576614757137721378813787118091180711825112941129310519105371053610703101061012597419742961793099346955590519375941898329063908991259241865486808664
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets40.941.242.041.842.443.142.443.141.641.340.237.437.336.833.033.233.031.631.930.330.530.430.529.730.029.429.529.529.129.530.129.330.430.832.230.330.731.331.430.630.230.8

us-gaap:DebtAndCapitalLeaseObligations us-gaap:LongtermDebtType

csx:EquipmentObligations


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-26
Value160178195213232250277
Percentage of DebtAndCapitalLeaseObligations1.01.11.31.82.12.32.8
Percentage of Assets0.40.50.50.60.70.70.8
Percentage of Assets csx:EquipmentObligations0.00.00.00.00.00.00.0

us-gaap:NotesPayableOtherPayables


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-26
Value1654216056145581159111055104459456
Percentage of DebtAndCapitalLeaseObligations99.098.998.798.297.997.697.1
Percentage of Assets41.642.039.632.431.229.828.6
Percentage of Assets us-gaap:NotesPayableOtherPayables0.00.00.00.00.00.00.0

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value1622916306163041612116128164771599315992155221574814739137541376913768117901178811806109631096298889905105161068310088101079513951493878410902190228787881188469052825785818623873481608186763780517895
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets40.641.141.040.941.542.441.841.240.941.340.137.337.336.833.033.132.930.731.028.528.730.430.529.729.928.728.828.826.328.528.428.428.528.929.627.629.029.529.628.928.527.728.629.4

us-gaap:LongTermDebtAndCapitalLeaseObligations us-gaap:BalanceSheetLocation

csx:LongTermLiabilities


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-28
Value1622916306163041612116128164771599315992155221574814739137541376913768117901178811806109631096298889905105161051510088101079513951493878410902190228787881188469052
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.098.4100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets40.641.141.040.941.542.441.841.240.941.340.137.337.336.833.033.132.930.731.028.528.730.430.029.729.928.728.828.826.328.528.428.428.528.929.6
Percentage of Assets csx:LongTermLiabilities0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312016-12-302015-12-252014-12-26
Value72487226716870877028699169616882679166906418959691798717
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.118.218.018.018.118.018.217.717.918.218.027.126.226.4

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value799784212235
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0
Percentage of Assets0.20.30.20.60.7
Percentage of Assets us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value270305324211326
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent341.8314.4385.799.5138.7
Percentage of Assets0.70.80.90.60.9
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value8.09.09.01413171515141717161413161514131514131316151423242322212120191814151413131211141414
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.00.10.00.00.00.00.00.10.00.1

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value493518513534554568591548568583594613636646650766797903863110511371145116211181138110011228408478598701366137813931457128413151330152512831285128912981284
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.31.31.41.41.51.51.41.51.51.61.71.71.71.82.22.22.52.43.23.33.33.33.33.43.33.42.62.62.72.74.44.54.64.84.34.44.65.24.54.54.74.64.8

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4504534554754814894934945015020.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.11.11.11.21.21.31.31.31.31.30.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-312019-12-31
Value4354
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0
Percentage of Assets0.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

csx:Conrail, us-gaap:CorporateJointVenture


Lessee
Period End2020-12-31
Value30
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo69.8
Percentage of Assets0.1
Percentage of Assets csx:Conrail us-gaap:CorporateJointVenture0.0

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-312019-12-31
Value3648
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0
Percentage of Assets0.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

csx:Conrail, us-gaap:CorporateJointVenture


Lessee
Period End2020-12-31
Value30
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree83.3
Percentage of Assets0.1
Percentage of Assets csx:Conrail us-gaap:CorporateJointVenture0.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-312019-12-31
Value3639
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0
Percentage of Assets0.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

csx:Conrail, us-gaap:CorporateJointVenture


Lessee
Period End2020-12-31
Value22
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour61.1
Percentage of Assets0.1
Percentage of Assets csx:Conrail us-gaap:CorporateJointVenture0.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-312019-12-31
Value3537
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0
Percentage of Assets0.10.1

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-312019-12-31
Value11721208
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0
Percentage of Assets2.93.2

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value500550553560555
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets1.31.41.41.51.5

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-312019-12-31
Value13691444
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0
Percentage of Assets3.43.8

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

csx:Conrail, us-gaap:CorporateJointVenture


Lessee
Period End2020-12-31
Value112
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue8.2
Percentage of Assets0.3
Percentage of Assets csx:Conrail us-gaap:CorporateJointVenture0.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value869
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets2.2

Stockholders Equity

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:StockholdersEquity

csx:AccumulatedOtherAdjustmentstoParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-62.0-64.0-62.0-62.0-64.0-65.0-56.0-58.0-60.0-60.0-57.0-50.0-48.0-45.0-46.0-57.0-59.0-61.0-60.0-62.0-64.0-65.0-64.0-67.0-66.0-55.0
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2
Percentage of Assets csx:AccumulatedOtherAdjustmentstoParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-572.0-584.0-598.0-590.0-597.0-607.0-619.0-590.0-595.0-599.0-604.0-524.0-533.0-540.0-440.0-504.0-510.0-573.0-580.0-577.0-585.0-593.0-601.0-578.0-590.0-611.0
Percentage of StockholdersEquity922.6912.5964.5951.6932.8933.81105.41017.2991.7998.31059.61048.01110.41200.0956.5884.2864.4939.3966.7930.6914.1912.3939.1862.7893.91110.9
Percentage of Assets-1.4-1.5-1.5-1.5-1.5-1.6-1.6-1.5-1.6-1.6-1.6-1.4-1.4-1.4-1.2-1.4-1.4-1.6-1.6-1.7-1.7-1.7-1.7-1.7-1.7-1.8
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value8311862349.00.0
Percentage of StockholdersEquity-133.9-184.4-100.0-54.8-14.1-0.0
Percentage of Assets0.20.30.20.10.00.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262014-12-26
Value-551.0-530.0-598.0-618.0-652.0-672.0-675.0-648.0-655.0-659.0-661.0-574.0-581.0-585.0-486.0-561.0-569.0-634.0-640.0-639.0-649.0-658.0-665.0-645.0-656.0-666.0
Percentage of StockholdersEquity888.7828.1964.5996.81018.81033.81205.41117.21091.71098.31159.61148.01210.41300.01056.5984.2964.41039.31066.71030.61014.11012.31039.1962.7993.91210.9
Percentage of Assets-1.4-1.3-1.5-1.6-1.7-1.7-1.8-1.7-1.7-1.7-1.8-1.6-1.6-1.6-1.4-1.6-1.6-1.8-1.8-1.8-1.9-1.9-1.9-1.9-1.9-2.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-252008-12-262007-12-28
Value13434131601311012727121631188811863118791229012445125801373514023143911472110902116011166911694116701162511606116681166011577113381117611142109041064510504986896629348900290318895850484688268894187568700876879858633
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.633.232.932.331.330.631.030.632.432.634.337.338.038.441.230.632.332.733.033.633.633.533.334.334.334.233.834.234.133.633.131.931.330.629.430.230.129.128.729.331.131.830.932.60.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-252008-12-262007-12-28
Value-551.0-530.0-598.0-618.0-652.0-672.0-675.0-648.0-655.0-659.0-661.0-574.0-581.0-585.0-486.0-640.0-665.0-666.0-523.0-936.0-875.0-771.0-809.0-741.0-325.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-4.1-4.0-4.6-4.9-5.4-5.7-5.7-5.5-5.3-5.3-5.3-4.2-4.1-4.1-3.3-5.5-5.7-6.0-5.0-10.4-10.3-8.9-9.2-9.3-3.8
Percentage of Assets-1.4-1.3-1.5-1.6-1.7-1.7-1.8-1.7-1.7-1.7-1.8-1.6-1.6-1.6-1.4-1.8-1.9-2.0-1.6-3.1-3.0-2.7-3.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-252008-12-26
Value2254120511721165112611311119109610881076106797398610901107106610791084107010481055370473391
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest16.89.28.99.29.39.59.49.28.98.68.57.17.07.67.59.19.29.710.211.612.54.35.44.9
Percentage of Assets5.63.02.93.02.92.92.92.82.92.82.92.62.72.93.13.03.13.33.43.43.61.31.80.0
Percentage of Assets us-gaap:CommonStockIncludingAdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-252008-12-262007-12-28
Value8.09.09.014131715151417171614131615162421141314142021
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.30.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.00.00.00.10.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-252008-12-262007-12-28
Value1172312476125271216611676114121140411416118431201112157133201360413873140841125311238107349936887682759087909083158492
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest87.394.895.695.696.096.096.196.196.496.596.697.097.096.495.796.296.396.094.698.697.7104.4103.7104.198.4
Percentage of Assets29.331.431.530.830.029.429.829.431.231.533.136.136.837.139.431.832.132.531.329.028.132.333.80.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value22547577637657657657737827988098188448598758908949139239289379469569669759849889929951000100410091014101910221020103110401039104910501095368370393
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.61.91.91.92.02.02.02.02.12.12.22.32.32.32.52.52.52.62.62.72.72.82.82.92.93.03.03.03.13.23.23.33.33.33.33.43.53.63.63.73.81.31.31.5

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value44840940036136634631429026724912912721521722721017013812511611211312011810092807065615044362820115.06.00.00.00.00.080
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0
Percentage of Assets1.11.01.00.90.90.90.80.80.70.70.30.30.60.60.60.60.50.40.40.30.30.30.40.30.30.30.20.20.20.20.20.10.10.10.10.00.00.00.00.00.00.00.3

us-gaap:AdditionalPaidInCapitalCommonStock us-gaap:Restatement, us-gaap:ReclassificationType

srt:RevisionOfPriorPeriodReclassificationAdjustment, us-gaap:ReclassificationOther


Additional
Period End2021-06-04
Value1000
Percentage of AdditionalPaidInCapitalCommonStock0.0
Percentage of Assets0.0
Percentage of Assets srt:RevisionOfPriorPeriodReclassificationAdjustment us-gaap:ReclassificationOther0.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value11723124761252712166116761141211404114161184312011121571332013604138731408410327110331119711253112331119911183112381119511117108951073410527103041006299369670948291918876879886798313827579448582913490879090
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets29.331.431.530.830.029.429.829.431.231.533.136.136.837.139.429.030.831.431.832.432.432.332.132.932.932.932.532.332.231.831.331.330.730.029.029.429.328.528.128.129.933.132.333.8

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:Restatement, us-gaap:ReclassificationType

srt:RevisionOfPriorPeriodReclassificationAdjustment, us-gaap:ReclassificationOther


Retained
Period End2021-06-04
Value-1000.0
Percentage of RetainedEarningsAccumulatedDeficit0.0
Percentage of Assets0.0
Percentage of Assets srt:RevisionOfPriorPeriodReclassificationAdjustment us-gaap:ReclassificationOther0.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-252008-12-26
Value-551.0-530.0-598.0-618.0-652.0-672.0-675.0-648.0-655.0-659.0-661.0-574.0-581.0-585.0-486.0-561.0-569.0-634.0-640.0-639.0-649.0-658.0-665.0-645.0-656.0-668.0-666.0-483.0-492.0-507.0-523.0-886.0-902.0-919.0-936.0-833.0-849.0-866.0-875.0-738.0-747.0-760.0-771.0-809.0-741.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-1.4-1.3-1.5-1.6-1.7-1.7-1.8-1.7-1.7-1.7-1.8-1.6-1.6-1.6-1.4-1.6-1.6-1.8-1.8-1.8-1.9-1.9-1.9-1.9-1.9-2.0-2.0-1.5-1.5-1.6-1.6-2.9-2.9-3.0-3.1-2.8-2.9-3.0-3.0-2.6-2.6-2.8-2.7-3.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value8.09.09.01413171515141717161413161514131514131316151423242322212120191814151413131211141414
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.00.10.00.00.00.00.00.10.00.1

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value11671232113594410061178111314701094117312351397104396661112955231043553896838754858930892690104185784659976892084873164210138474449069981081506969855678744
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.043.840.235.644.641.338.649.435.738.939.344.633.633.621.347.217.836.418.233.131.028.830.931.629.122.832.626.626.119.925.330.727.624.722.335.028.115.030.733.735.818.034.432.125.529.9

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value-230.0-297.0-456.0-190.0-147.0144-373.0-473.0-386.0-870.0-97.0-832.0-439.0-316.0-416.0-112.0-681.0-286.0-905.0-412.0-522.041-941.0-377.0-1074.0-500.0-563.0-970.0-423.0-227.0-984.0-322.0-656.0-265.0-952.0-596.0-652.0-77.0-1186.0-470.0-555.0-376.0-694.0-443.0-309.0-310.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.7-10.6-16.1-7.2-6.55.0-12.9-15.9-12.6-28.9-3.1-26.6-14.2-11.0-14.5-4.1-23.2-10.0-29.8-15.2-19.31.6-33.8-12.8-35.1-16.5-17.6-30.1-13.0-7.5-32.5-10.7-21.4-9.0-33.0-20.6-21.6-2.6-40.2-15.9-18.4-13.4-24.6-16.6-11.6-12.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value-906.0-1109.0-448.0-247.0-463.0-285.0-1303.0-329.0-1043.027-943.0-1222.0-1264.0929-385.0-1212.0-152.0-430.0352-447.0-481.0-692.0170-450.059-298.0-288.019-325.0-489.0217-621.0-283.0-545.0401-366.0-180.0-523.0483-1200.0192-888.0381-409.0-729.0-470.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-30.3-39.4-15.9-9.3-20.5-10.0-45.2-11.0-34.10.9-30.0-39.1-40.732.3-13.4-44.2-5.2-15.011.6-16.5-17.8-26.46.1-15.31.9-9.8-9.00.6-10.0-16.27.2-20.7-9.2-18.413.9-12.6-6.0-17.616.4-40.56.4-31.613.5-15.3-27.4-18.9

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value31-174.02315073961037-563.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.0-6.28.219.117.636.3-19.5

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value26406356332887894651131504454-3394.049535993147858037449276.02084.087-1.071579082136156105195123206143137335603346
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value2053-14.079-99.014-54.0113-35.074-36.0129-53.064-61.096-85.091-54.094-50.050-82.071-92.024-19.070-80.030-57.057-20.048-63.0141-150.069-33.08252-17.05261-8.0-26.0
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value6364-71.0108-147.027-84.0-22.05.056-51.050-3.050-8.0-25.07330-16.0-2.0-9.0-57.0-23.0-25.0-82.0-19.03.0561446-70.062-28.042-67.02.0-24.022-76.030194-75.07.052-81.024
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value11671232113594410061178111314701094117312351397104396661112955231043553896838754858930892690104185784659976892084873164210138474449069981081506969855678744
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.043.840.235.644.641.338.649.435.738.939.344.633.633.621.347.217.836.418.233.131.028.830.931.629.122.832.626.626.119.925.330.727.624.722.335.028.115.030.733.735.818.034.432.125.529.9

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-302012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-262009-12-252009-09-252009-06-262009-03-27
Value11737067607364997707718568708348438948776954140459510362458455445356466507553442491509529398426463535462449443455512449457464506395430414414305303290305245
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.225.126.927.822.127.026.728.728.427.726.828.628.324.2144.616.717.412.615.116.816.513.616.817.318.014.615.415.816.313.214.115.417.415.615.515.415.717.015.115.515.716.814.115.315.515.512.213.112.714.010.9

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1173706736499770856870834894877695
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.225.127.822.127.028.728.427.728.628.324.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value-230.0-297.0-456.0-190.0-147.0144-373.0-473.0-386.0-870.0-97.0-832.0-439.0-316.0-416.0-112.0-681.0-286.0-905.0-412.0-522.041-941.0-377.0-1074.0-500.0-563.0-970.0-423.0-227.0-984.0-322.0-656.0-265.0-952.0-596.0-652.0-77.0-1186.0-470.0-555.0-376.0-694.0-443.0-309.0-310.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.7-10.6-16.1-7.2-6.55.0-12.9-15.9-12.6-28.9-3.1-26.6-14.2-11.0-14.5-4.1-23.2-10.0-29.8-15.2-19.31.6-33.8-12.8-35.1-16.5-17.6-30.1-13.0-7.5-32.5-10.7-21.4-9.0-33.0-20.6-21.6-2.6-40.2-15.9-18.4-13.4-24.6-16.6-11.6-12.4

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value448306417408420381466422416353505417455368578507514441808524641425653621690598892601481475626602594491511607754469861489557390722416359328
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value-906.0-1109.0-448.0-247.0-463.0-285.0-1303.0-329.0-1043.027-943.0-1222.0-1264.0929-385.0-1212.0-152.0-430.0352-447.0-481.0-692.0170-450.059-298.0-288.019-325.0-489.0217-621.0-283.0-545.0401-366.0-180.0-523.0483-1200.0192-888.0381-409.0-729.0-470.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-30.3-39.4-15.9-9.3-20.5-10.0-45.2-11.0-34.10.9-30.0-39.1-40.732.3-13.4-44.2-5.2-15.011.6-16.5-17.8-26.46.1-15.31.9-9.8-9.00.6-10.0-16.27.2-20.7-9.2-18.413.9-12.6-6.0-17.616.4-40.56.4-31.613.5-15.3-27.4-18.9

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232015-12-252015-09-252014-12-262014-09-262013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-24
Value5000.00.05000.010000.0100010000.00.020000.00.08500.022000.06000.00.010005000.00.00.08000.00.03006000.06000.08000.0
Percentage of ProceedsFromIssuanceOfLongTermDebt100.00.00.0100.00.0100.00.0100.0100.00.00.0100.00.00.0100.00.0100.00.0100.00.00.0100.0100.00.00.00.0100.00.00.0100.0100.00.0100.00.0100.00.0

us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:BalanceSheetLocation

csx:LongTermLiabilities


Proceeds
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302015-09-25
Value0.00.050010000.010000.00.020000.00.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.00.0100.0100.00.0100.00.00.0100.00.00.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302018-12-312017-12-312017-09-302014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value0.036050018500180.01.019352091.03244241327264241310.0254652410.0325417
Percentage of RepaymentsOfLongTermDebt0.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfLongTermDebt us-gaap:BalanceSheetLocation

csx:CurrentLiabilities


Repayments
Period End2021-06-302021-03-312020-09-302017-09-302014-06-272014-03-28
Value0.0360181935209
Percentage of RepaymentsOfLongTermDebt0.0100.0100.0100.0100.0100.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-28
Value212213198199199201186189193195181186190194178180184166167169171173174176178158159159160151152152153143143
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-28
Value70155120348395776061111860796187110009748362071000499258278263266249258262157127129131131127129129950.0234
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:PaymentsForRepurchaseOfCommonStock us-gaap:ShareRepurchaseProgram

csx:StructuredShareRepurchaseProgram


Payments
Period End2021-06-30
Value228
Percentage of PaymentsForRepurchaseOfCommonStock32.5

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2020-12-312019-12-312013-12-272012-12-282011-12-302010-12-312009-12-252008-12-26
Value60.8849.7805.365.645.825.875.98
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.00.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:RestrictedStockUnitsRSU, csx:LongtermIncentivePlan


Share
Period End2021-02-102021-02-282020-02-182020-02-292019-02-062019-02-282018-03-31
Value163000.0490000.091000.091000.065000.065000.085000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0100.0100.0100.0100.0100.0

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

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


Share
Period End2021-02-102021-02-282020-02-182020-02-29
Value189000.0566000.0218000.0218000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod115.5116.0239.6239.6

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value7646758574447298102189905946791308796838277687261
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value478624754880622726750623819963907891
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-252008-12-26
Value16131224252321232422205057
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Sale Of Short Term Investments

us-gaap:ProceedsFromSaleOfShortTermInvestments

us-gaap:ProceedsFromSaleOfShortTermInvestments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-01
Value0.01.01.02022859366286705602504903.04.08.0236465287205255260140670185650250140572456237409944033705348.0271094378.0242220
Percentage of ProceedsFromSaleOfShortTermInvestments0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:DefinedBenefitPlanNetPeriodicBenefitCostBeforeGainLossDuetoSettlementsandCurtailments us-gaap:RetirementPlanType

csx:DefinedBenefitPlanNetPeriodicBenefitCostBeforeGainLossDuetoSettlementsandCurtailments

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-24
Value-1.00.0-1.0-2.01.0-1.02.02.02.02.03.02.04.04.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostBeforeGainLossDuetoSettlementsandCurtailments100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-24
Value2.01.01.0-2.0-1.0-2.0-3.0-3.0-2.0-2.0-1.03.01414
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostBeforeGainLossDuetoSettlementsandCurtailments-200.00.0-100.0100.0-100.0200.0-150.0-150.0-100.0-100.0-33.3150.0350.0350.0

csx:EquipmentAndOtherRents

csx:EquipmentAndOtherRents


Equipment
Period End2021-06-302020-06-302011-04-012010-03-26
Value877897100
Percentage of EquipmentAndOtherRents100.0100.0100.0100.0

csx:EquipmentandOtherRents

csx:EquipmentandOtherRents


Equipmentand
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-28
Value88918878811011041031009389112101147979590123105105105108114101113107106114101959496959796
Percentage of EquipmentandOtherRents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodAndOther us-gaap:StatementEquityComponents

csx:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodAndOther

us-gaap:CommonStock


Share
Period End2021-06-302021-03-312020-06-302020-03-31
Value640000.03003000.0522000.02680000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodAndOther100.0100.0100.0100.0

csx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsExercisesinPeriodandOther us-gaap:StatementEquityComponents

csx:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsExercisesinPeriodandOther

us-gaap:CommonStock


Sharebased
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1001000.0427000.0174000.0894000.0264000.0278000.02524000.0-50000.0-157000.0469000.0
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsExercisesinPeriodandOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:StockIssuedDuringPeriodValueStockOptionsExercisedAndOther

csx:StockIssuedDuringPeriodValueStockOptionsExercisedAndOther


Stock
Period End2021-06-302021-03-312020-06-302020-03-31
Value3540-6.030
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedAndOther100.0100.0100.0100.0

csx:StockIssuedDuringPeriodValueStockOptionsExercisedAndOther us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-06-302020-03-31
Value-186.037-4.021
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedAndOther-531.492.566.770.0

us-gaap:NoncontrollingInterest


Stock
Period End2021-06-302020-06-302020-03-31
Value-1.0-4.02.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedAndOther-2.966.76.7

us-gaap:RetainedEarnings


Stock
Period End2021-06-302021-03-312020-06-302020-03-31
Value2223.02.07.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedAndOther634.37.5-33.323.3

csx:StockIssuedDuringPeriodValueStockOptionsExercisedandOther

csx:StockIssuedDuringPeriodValueStockOptionsExercisedandOther


Stock
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value4041-6.0302624203.0-85.0104
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedandOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:StockIssuedDuringPeriodValueStockOptionsExercisedandOther us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stock
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value3940-4.0212423212.0-88.0-2.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedandOther97.597.666.770.092.395.8105.066.7103.5-1.9

us-gaap:NoncontrollingInterest


Stock
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302018-09-302018-06-302018-03-31
Value1.0-4.02.01.0-3.02.01.0-3.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedandOther2.466.76.73.8-12.566.7-1.2-2.9

us-gaap:RetainedEarnings


Stock
Period End2021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1.02.07.01.04.0-1.0-1.02.0109
Percentage of StockIssuedDuringPeriodValueStockOptionsExercisedandOther2.5-33.323.33.816.7-5.0-33.3-2.4104.8

us-gaap:AmortizationOfDebtDiscountPremium

us-gaap:AmortizationOfDebtDiscountPremium


Amortization
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-25
Value4.02.04.01.0-6.0-12.01.09.0-3.0-1.0222.01.01.01.01.01.0
Percentage of AmortizationOfDebtDiscountPremium100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfDebtDiscountPremium us-gaap:BalanceSheetLocation

csx:LongTermLiabilities


Amortization
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-25
Value4.02.04.01.0-6.0-12.01.09.0-3.0-1.0221.02.01.00.01.01.0
Percentage of AmortizationOfDebtDiscountPremium100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.050.0200.0100.00.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-24
Value-19.0-18.0-11.0-15.0-14.0-14.0-7.0-8.0-8.0-7.0-11.0-10.0-10.0-10.0-10.0-10.0-10.0-11.0-12.0-12.0-12.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3000000.0-1000000.0-2000000.0-2000000.0-1000000.0-2000000.0-2000000.0-2000000.0-1000000.0-2000000.0-2000000.0000
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-24
Value474646434443424343434544434443434342393940
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-24
Value1.03.01.00.01.00.00.01.01.02.02.01.02.01.02.02.02.03.03.03.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-24
Value131421202120262526262323232323232323302930
Percentage of DefinedBenefitPlanInterestCost1300.00.0700.02000.00.02000.00.00.02600.02600.01150.01150.02300.01150.02300.01150.01150.01150.01000.0966.71000.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-24
Value-2.0-1.00.0-1.01.02.02.02.02.02.03.0155.04.04.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-24
Value-6.0-5.01.01.0-4.0-3.0-3.0-2.012-2.06.053141414
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost300.0500.00.0-100.0-400.0-150.0-150.0-100.0600.0-100.0200.0353.3280.0350.0350.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-302016-09-232016-06-24
Value0.00.01.00.00.00.01.00.01.00.01.00.01.00.01.01.00.01.0
Percentage of DefinedBenefitPlanServiceCost0.00.0100.00.00.00.0100.00.0100.00.0100.00.0100.00.0100.0100.00.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-24
Value9.09.01310.010.010.07.08.08.08.08.08.07.09.08.08.09.011121212
Percentage of DefinedBenefitPlanServiceCost0.00.00.00.01000.00.00.00.0800.00.0800.00.0700.00.0800.00.0900.00.01200.00.01200.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value348345347348344344344338337330345334329323337331327320348321319313312302299295290291287283281277276270271268263257236251246243257232230228
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value212213199199201189193195186190194
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value212213199199201189193195186190194
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value6.09.02.06.02.09.02.06.07.0283.06.09.03.02.07.012135.03.03.03.0-4.01.04.03.05.04.02.02.02.03.02.01.01.03.01.00.00.03.04.04.07.05.03.09.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExtinguishmentOfDebtAmount us-gaap:DebtInstrument

us-gaap:ExtinguishmentOfDebtAmount

csx:A370NotesDueNovember12023


Extinguishment
Period End2020-12-01
Value500
Percentage of ExtinguishmentOfDebtAmount100.0

us-gaap:FuelCosts

us-gaap:FuelCosts


Fuel
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value19419013911991192216223234233253268270255243205198218217174172150201223263270361393416446408407397444421397410444423412431402346279304283
Percentage of FuelCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-30
Value3673.02.04.011182265372732533732131.02.02.01244.0701.0190.06.01.03.01.02.01.0373094332019
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment us-gaap:PropertyPlantAndEquipmentByType

csx:LandEasement


Gain
Period End2021-04-14
Value349
Percentage of GainLossOnSaleOfPropertyPlantEquipment0.0

us-gaap:IncreaseDecreaseInAccruedTaxesPayable

us-gaap:IncreaseDecreaseInAccruedTaxesPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-24
Value-11.0192-59.0-240.0111227-112.025-61.0150-123.043-151.0127-160.0226-208.016248-52.0-32.059-172.032-52.0130-68.028-45.0159-133.026-87.0127-165.0308830137.03640-122.056
Percentage of IncreaseDecreaseInAccruedTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInOtherCurrentAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-24
Value-1.05.038134.02016-43.0-19.0-22.0-31.0-56.0-33.01946-35.021-33.055-3.03130239.01.051-21.0-13.01941-42.0-25.0-7.038-25.0-13.01852-14.0-27.02935-22.0-8.0
Percentage of IncreaseDecreaseInOtherCurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-24
Value40-60.09.09511-140.01969-12.0-172.0511750-165.0398932-117.096-50.091-102.055-28.056-201.0941994-173.0717060-88.0472.028-151.049-13.0180-181.02675
Percentage of IncreaseDecreaseInOtherCurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value596620588574507606658638648672678695669696665717743789852762749796799787825879909845809814803791777767752754744770779765764765776731721729
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent us-gaap:RetirementPlanType

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-2.0-1.02.0-1.0-1.0-1.0-2.0-2.00.0-1.00.02.01.02.01.02.02.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-15.0-14.0-14.0-8.0-9.0-9.0-9.0-10.0-9.0-10.0-11.0-11.0-10.0-11.0-10.0-10.0-10.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent750.01400.0-700.0800.0900.0900.0450.0500.00.01000.00.0-550.0-1000.0-550.0-1000.0-500.0-500.0

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-45.073183210.0-7.0-43.00.0-3.0-2.0-117.0-1.0-2.01.0
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsBeforeTaxAttributableToParent us-gaap:StatementEquityComponents

csx:AccumulatedOtherAdjustmentstoParent


Oci
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-06-242016-03-252015-09-25
Value-1.0-1.0-1.0-7.00.00.0-3.0-2.0-6.0-1.0-2.01.0112.01.0-1.00.0-1.00.0
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent-5.6-3.1-10.0100.0-0.00.0100.0100.05.1100.0100.0100.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Oci
Period End2021-06-302021-03-312020-12-312020-09-30
Value-45.0733633
Percentage of OciBeforeReclassificationsBeforeTaxAttributableToParent100.0100.0200.0103.1

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:InterestRateSwap, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value-35.05628259.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-29
Value-21.0682034203.0-27.07.04.02.0-87.07.04.0-99.0-2.0-183.09.01516363161717
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

csx:AccumulatedOtherAdjustmentstoParent


Other
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-09-25
Value-2.00.02.01.0-9.02.02.00.0-3.0-7.0-2.0-3.01.0112.02.0-1.02.02.01.0-1.0-1.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-2.90.05.95.0-300.0-7.428.60.0-150.08.0-28.6-75.0-1.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-29
Value1214-8.07.010.012-29.05.04.05.0-80.09.07.0-100.0646.0637.0-3.08.08.08.0-23.0121110.0-178.010.010.09.0338161718
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-57.120.6-40.020.650.0400.0107.471.4100.0250.092.0128.6175.0101.00.00.00.00.00.00.00.00.00.00.00.0-500.097.3111.166.756.293.1100.0100.0105.9

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-302021-03-312020-12-312020-09-30
Value-35.0562825
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent166.782.4140.073.5

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-25
Value-21.06834203.07.04.02.07.04.0-99.0758.0656.0-1.010.09.07.0-20.011
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-29
Value-5.0199.0117.01.0-9.02.02.02.0-25.02.03.01.08.0-106.05.06.07.01971310.010.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1 us-gaap:StatementEquityComponents

csx:AccumulatedOtherAdjustmentstoParent


Other
Period End2021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-09-25
Value-1.01.0-1.00.01.00.01.0-1.00.00.0-1.00.00.01.00.0-2.00.02.00.00.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1-5.314.3-100.0-0.050.00.050.04.00.00.0-100.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-29
Value4.03.00.03.04.02.0-9.01.02.01.0-24.02.03.02.0213.0364.0-1.05.04.05.0-14.07.07.08.0-105.05.06.06.0198131110.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1-80.015.80.027.357.1200.0100.050.0100.050.096.0100.0100.0200.00.00.00.00.00.00.00.00.00.00.00.0100.099.1100.0100.085.7100.5100.0110.0100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-302021-03-312020-12-312020-09-30
Value-10.0178.08.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1200.089.588.972.7

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostAndExpenseOperating


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-26
Value441469445378407454436415455478542474469482540516490567493507519550570580559627624610
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherOperatingActivitiesCashFlowStatement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-24
Value0.028-2.0-5.0-25.00.0367.0-7.0-14.0-8.02.0-21.06.0-4.02.0-17.02.0-23.0-20.02.0-29.0-25.0-18.0392633-20.010.0-9.0188.0-4.0-57.047-50.0-5.0-56.0-29.04.0-9.0-1.0-28.01.0
Percentage of OtherOperatingActivitiesCashFlowStatement0.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPaymentsToAcquireBusinesses us-gaap:BusinessAcquisition

us-gaap:OtherPaymentsToAcquireBusinesses

csx:PanAmRailwaysInc


Other
Period End2020-11-30
Value30
Percentage of OtherPaymentsToAcquireBusinesses100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value9.0-8.045-10.02220-12.0-35.0142.0190.00.08.034-30.0-16.0-25.0171.04.0-31.05.010.011-63.04215-16.0-4.0584.0321880-4.02.0-8.073-19.0-2.0-14.0-28.027-50.0-18.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:PaymentsToAcquireBusinessesGross

csx:QualityCarriersInc, us-gaap:SubsequentEvent


Payments
Period End2021-07-01
Value546
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireShortTermInvestments

us-gaap:PaymentsToAcquireShortTermInvestments


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-01
Value0.00.00.0426583828614813125534770.01371004707551915025235569395670105263810195165447119400290555205.0534786.00.08.0
Percentage of PaymentsToAcquireShortTermInvestments0.00.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312010-09-242010-06-252010-03-26
Value7.015-47.0182.0-7.0-11.0-11.010.018-7.0-1.0-10.0-41.01.0-7.0-6.0-6.0-3.04.0-44.0-270.03.06.04.0-13.01.0-3.00.0-2.0-1.0-16.04.05.02.04.05.07.017-16.0-7.013-4.09.00.0-137.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232015-12-252015-09-252014-12-262014-09-26
Value5.06.010.0353672984862116895259223.0131843.0101-1.05.020
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType

csx:LandEasement


Proceeds
Period End2021-04-14
Value200
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment0.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment us-gaap:StatementScenario, us-gaap:PropertyPlantAndEquipmentByType, us-gaap:SubsequentEventType

srt:ScenarioForecast, csx:LandEasement, us-gaap:SubsequentEvent


Proceeds
Period End2021-12-31
Value168
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment0.0

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-19000000.0-14000000.0-11000000.0-13000000.0-17000000.0-11000000.0-7000000.0-9000000.0-9000000.0-6000000.0-5000000.0-10000000.0-9000000.0-8000000.0
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent us-gaap:StatementEquityComponents

csx:AccumulatedOtherAdjustmentstoParent


Reclassification
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-09-25
Value3000000.0-2000000.0-3000000.0-3000000.03000000.0-2000000.0-3000000.0-3000000.002000000.01000000.01000000.02000000.000-2000000.003000000.0-1000000.0-3000000.001000000.0
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent-21.418.223.117.6-27.328.633.333.3-0.0-40.0-10.0-11.1-25.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-09-25
Value-16000000.0-17000000.0-9000000.0-10000000.0-14000000.0-14000000.0-5000000.0-6000000.0-6000000.0-6000000.0-7000000.0-11000000.0-10000000.0-10000000.0-23000000.0-9000000.0-13000000.0-11000000.0-12000000.0-13000000.0-12000000.0-13000000.0-19000000.0
Percentage of ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent84.2121.481.876.982.4127.371.466.766.7100.0140.0110.0111.1125.00.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1.11.201.1880.0150.01200.0140.0120.01300.0120.0130.015000.0150.015
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

csx:PerformanceUnits


Share
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value24.25500.2450-0.00030.27630.2790.00050.2915
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate100.00.0100.00.0100.0100.0100.0100.0100.0

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value31.031.20.125.740.3010.2600.2570.2540.25800.2550.2580.27000.270.271
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.00.00.0106.10.0106.10.00.0-84666.793.40.091.451600.092.60.00.00.00.0

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-06-302020-03-31
Value34.333.6024.5
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.00.00.010000.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

csx:PerformanceUnits


Share
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1.38600.014000.0250.02700.023
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.00.0100.00.00.0100.0100.00.0100.0

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1.00.701.3860.0050.014-0.0010.0140.0240.02600.0280.0280.026000.0210.022
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.00.00.0100.00.0100.00.00.00.0104.00.0103.70.0113.00.00.00.00.0

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.20.201.4
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.00.00.010000.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

csx:LongtermIncentivePlan


Share
Period End2021-02-102021-02-282020-02-292019-02-062018-03-31
Value610000.01831000.01300000.0843000.0950000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value9.1823.640.07017.7718.87-0.1215.4420.5117.45020.5217.6214.620.01012.2712.83
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod

us-gaap:EmployeeStock, csx:EmployeeStockPurchasePlan


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value264000.0132000.00120000.00122000.00144000.00105000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod100.0100.00.0100.00.0100.00.0100.00.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value33.3588.46070.8779.4866.3578.5868.0974.8465.4454.07047.849.61
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-02-282018-03-312018-02-222017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-27
Value226.03.01.01.09.09.01611122615163.0153.04.0209.06.08.010.010.010.09.09.04.04.04.04.04.05.05.05.0
Percentage of StockRepurchasedAndRetiredDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares us-gaap:ShareRepurchaseProgram

csx:ShareRepurchaseProgramJanuary2019


Stock
Period End2020-12-31
Value1.1
Percentage of StockRepurchasedAndRetiredDuringPeriodShares36.7

csx:StructuredShareRepurchaseProgram


Stock
Period End2021-06-30
Value7.0
Percentage of StockRepurchasedAndRetiredDuringPeriodShares31.8

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares us-gaap:StatementEquityComponents

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value186.130.7050.588.906161111141614
Percentage of StockRepurchasedAndRetiredDuringPeriodShares83.4102.270.558.099.0100.6102.496.295.6102.499.8

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Stock
Period End2021-07-012018-10-102018-07-17
Value3.07.07.0
Percentage of StockRepurchasedAndRetiredDuringPeriodShares0.00.00.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value701551483957711118607961006974836
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value196.01.01.09.0161112151615
Percentage of StockRepurchasedAndRetiredDuringPeriodValue2.71.12.12.61.61.41.31.51.51.61.8

us-gaap:RetainedEarnings


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value68254547385681095849784991958821
Percentage of StockRepurchasedAndRetiredDuringPeriodValue97.398.997.997.498.498.698.798.598.598.498.2

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-232016-06-242016-03-252015-09-252015-06-262015-03-272014-09-262014-06-272014-03-282013-09-272013-06-282013-03-292012-09-282012-06-292012-03-302011-09-302011-07-012011-04-012010-09-242010-06-25
Value5.01.02.01.01.02.02.03.04.04.03.04.04.02.01.00.01.01.01.01.00.00.00.01.01.01.02.02.02.06.06.6067.0119.681
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationReturnOnPlanAssets us-gaap:RetirementPlanType

csx:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value6.750.06750.06750.06750.0675
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationReturnOnPlanAssets100.0100.0100.0100.0100.0

csx:DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal us-gaap:RetirementPlanType

csx:DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value8094109214
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1840183018121837
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal2300.01946.81662.4858.4

csx:EquityMethodInvestmentOwnershipVotingInterest us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

csx:EquityMethodInvestmentOwnershipVotingInterest

csx:Conrail, us-gaap:CorporateJointVenture


Equity
Period End2020-12-31
Value50.0
Percentage of EquityMethodInvestmentOwnershipVotingInterest100.0

csx:LongTermDebtAndFinanceLeaseMaturityAfterYearFive

csx:LongTermDebtAndFinanceLeaseMaturityAfterYearFive


Long
Period End2020-12-31
Value14851
Percentage of LongTermDebtAndFinanceLeaseMaturityAfterYearFive100.0

csx:LongTermDebtAndFinanceLeaseMaturityYearFive

csx:LongTermDebtAndFinanceLeaseMaturityYearFive


Long
Period End2020-12-31
Value601
Percentage of LongTermDebtAndFinanceLeaseMaturityYearFive100.0

csx:LongTermDebtAndFinanceLeaseMaturityYearFour

csx:LongTermDebtAndFinanceLeaseMaturityYearFour


Long
Period End2020-12-31
Value551
Percentage of LongTermDebtAndFinanceLeaseMaturityYearFour100.0

csx:LongTermDebtAndFinanceLeaseMaturityYearOne

csx:LongTermDebtAndFinanceLeaseMaturityYearOne


Long
Period End2020-12-31
Value401
Percentage of LongTermDebtAndFinanceLeaseMaturityYearOne100.0

csx:LongTermDebtAndFinanceLeaseMaturityYearThree

csx:LongTermDebtAndFinanceLeaseMaturityYearThree


Long
Period End2020-12-31
Value139
Percentage of LongTermDebtAndFinanceLeaseMaturityYearThree100.0

csx:LongTermDebtAndFinanceLeaseMaturityYearTwo

csx:LongTermDebtAndFinanceLeaseMaturityYearTwo


Long
Period End2020-12-31
Value162
Percentage of LongTermDebtAndFinanceLeaseMaturityYearTwo100.0

csx:NumberOfImpairedSites us-gaap:LossContingenciesByNatureOfContingency

csx:NumberOfImpairedSites

us-gaap:EnvironmentalIssue


Number
Period End2021-06-302021-03-312020-12-312020-09-30
Value210.0220.0220.0224.0
Percentage of NumberOfImpairedSites100.0100.0100.0100.0

csx:NumberOfOceanRiverAndLakePortsServiced

csx:NumberOfOceanRiverAndLakePortsServiced


Number
Period End2020-12-31
Value70.0
Percentage of NumberOfOceanRiverAndLakePortsServiced100.0

csx:NumberOfShortLineAndRegionalRailroadsServed

csx:NumberOfShortLineAndRegionalRailroadsServed


Number
Period End2020-12-31
Value230.0
Percentage of NumberOfShortLineAndRegionalRailroadsServed100.0

csx:NumberOfTerminals us-gaap:ProductOrService

csx:NumberOfTerminals

csx:IntermodalBusiness


Number
Period End2020-12-31
Value30.0
Percentage of NumberOfTerminals100.0

csx:NumberOfTerminalsAndFacilities dei:LegalEntity, us-gaap:StatementGeographical, us-gaap:BusinessAcquisition

csx:NumberOfTerminalsAndFacilities

csx:QualityCarriersInc, csx:UnitedStatesCanadaAndMexico, csx:QualityCarriersInc


Number
Period End2021-05-12
Value100.0
Percentage of NumberOfTerminalsAndFacilities100.0

csx:PercentageOfAssetsDepreciatedUnderGroupLifeMethod

csx:PercentageOfAssetsDepreciatedUnderGroupLifeMethod


Percentage
Period End2020-12-312012-12-282011-12-302010-12-31
Value87.00.850.850.85
Percentage of PercentageOfAssetsDepreciatedUnderGroupLifeMethod100.0100.0100.0100.0

csx:PercentageOfLaborCostRailInstallationDeconstructionOfOldTrack

csx:PercentageOfLaborCostRailInstallationDeconstructionOfOldTrack


Percentage
Period End2020-12-31
Value20.0
Percentage of PercentageOfLaborCostRailInstallationDeconstructionOfOldTrack100.0

csx:PercentageOfLaborCostRailInstallationInstallationOfNewTrack

csx:PercentageOfLaborCostRailInstallationInstallationOfNewTrack


Percentage
Period End2020-12-31
Value80.0
Percentage of PercentageOfLaborCostRailInstallationInstallationOfNewTrack100.0

csx:RailRouteNetworkDistance

csx:RailRouteNetworkDistance


Rail
Period End2021-06-302021-03-312020-12-312020-09-302013-12-272013-03-292012-12-282012-09-282012-06-292012-03-302011-12-30
Value19500.019500.019500.020000.021000.021000.021000.021000.021000.021000.021000.0
Percentage of RailRouteNetworkDistance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

csx:RailRouteNetworkDistance dei:LegalEntity

csx:PanAmRailwaysInc


Rail
Period End2020-11-30
Value1200.0
Percentage of RailRouteNetworkDistance0.0

csx:RailRouteNetworkDistance dei:LegalEntity, us-gaap:BusinessAcquisition

csx:PanAmSystemsInc, csx:PanAmSystemsInc


Rail
Period End2020-11-30
Value1200.0
Percentage of RailRouteNetworkDistance0.0

csx:RailRouteNetworkDistancePartialInterest dei:LegalEntity

csx:RailRouteNetworkDistancePartialInterest

csx:PanAmRailwaysInc


Rail
Period End2020-11-30
Value600.0
Percentage of RailRouteNetworkDistancePartialInterest100.0

csx:RailRouteNetworkDistancePartialInterest dei:LegalEntity, us-gaap:BusinessAcquisition

csx:PanAmSystemsInc, csx:PanAmSystemsInc


Rail
Period End2020-11-30
Value600.0
Percentage of RailRouteNetworkDistancePartialInterest100.0

csx:SaleOfPropertyPlantAndEquipmentConsideration us-gaap:PropertyPlantAndEquipmentByType

csx:SaleOfPropertyPlantAndEquipmentConsideration

csx:LandEasement


Sale
Period End2021-03-26
Value525
Percentage of SaleOfPropertyPlantAndEquipmentConsideration100.0

csx:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValue us-gaap:AwardType

csx:SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValue

csx:RestrictedStockUnitsRSUsandRestrictedStock


Sharebased
Period End2020-12-312019-12-312018-12-312017-12-31
Value79.369.1962.648.35
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValue100.0100.0100.0100.0

dei:EntityNumberOfEmployees

dei:EntityNumberOfEmployees


Entity
Period End2020-12-31
Value19300.0
Percentage of EntityNumberOfEmployees100.0

us-gaap:AcceleratedShareRepurchasesSettlementPaymentOrReceipt us-gaap:ShareRepurchaseProgram

us-gaap:AcceleratedShareRepurchasesSettlementPaymentOrReceipt

csx:ShareRepurchaseProgramJanuary2019


Accelerated
Period End2020-12-312019-08-31
Value100250
Percentage of AcceleratedShareRepurchasesSettlementPaymentOrReceipt100.0100.0

us-gaap:AccountsReceivableGross us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:AccountsReceivableGross

csx:FreightReceivables


Accounts
Period End2021-06-302020-12-31
Value821716
Percentage of AccountsReceivableGross100.0100.0

csx:NonFreightReceivables


Accounts
Period End2021-06-302020-12-31
Value397224
Percentage of AccountsReceivableGross48.431.3

us-gaap:AccountsReceivableGross us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:PropertyPlantAndEquipmentByType

csx:NonFreightReceivables, csx:LandEasement


Accounts
Period End2021-06-30
Value168
Percentage of AccountsReceivableGross20.5

us-gaap:AccountsReceivableGross us-gaap:ProductOrService

csx:FreightReceivables


Accounts
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value786716756644802790861884891846887844855810
Percentage of AccountsReceivableGross0.0100.00.00.00.00.00.00.00.00.00.00.00.00.0

csx:NonFreightReceivables


Accounts
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value199224250244235226269256241190230218218186
Percentage of AccountsReceivableGross0.031.30.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableNet


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value119295791298086010089861101111111061010109010361045970
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNet us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

csx:FreightReceivables


Accounts
Period End2021-06-302020-12-31
Value807700
Percentage of AccountsReceivableNet67.776.8

csx:NonFreightReceivables


Accounts
Period End2021-06-302020-12-31
Value385212
Percentage of AccountsReceivableNet32.323.2

us-gaap:AccountsReceivableNet us-gaap:ProductOrService

csx:FreightReceivables


Accounts
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value770700740627782769841864874828870827837793
Percentage of AccountsReceivableNet80.576.875.572.977.678.076.477.879.082.079.879.880.181.8

csx:NonFreightReceivables


Accounts
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value187212240233226217260247232182220209208177
Percentage of AccountsReceivableNet19.523.224.527.122.422.023.622.221.018.020.220.219.918.2

us-gaap:AllowanceForDoubtfulAccountsReceivable us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:AllowanceForDoubtfulAccountsReceivable

csx:FreightReceivables


Allowance
Period End2021-06-302020-12-31
Value1416
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable us-gaap:ProductOrService

csx:FreightReceivables


Allowance
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1616161720212020171817171817
Percentage of AllowanceForDoubtfulAccountsReceivable0.0100.00.00.00.00.00.00.00.00.00.00.00.00.0

csx:NonFreightReceivables


Allowance
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value121210.0119.09.09.09.09.08.010.09.010.09.0
Percentage of AllowanceForDoubtfulAccountsReceivable0.075.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AociTaxAttributableToParent

us-gaap:AccumulatedOtherComprehensiveIncome


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value142137156165178183184175177179180156158160162
Percentage of AociTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value868789912945731100111895790334070517095
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:EstimateOfFairValueFairValueDisclosure


Available
Period End2020-12-312019-12-312018-12-312017-12-31
Value23252626
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:EstimateOfFairValueFairValueDisclosure


Available
Period End2020-12-312019-12-312018-12-312017-12-31
Value2210.01411
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue

us-gaap:EstimateOfFairValueFairValueDisclosure


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-26
Value4.02.02.01.020348799610378788222536158210.018113477287417152262375810425680257292
Percentage of AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue

us-gaap:EstimateOfFairValueFairValueDisclosure


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value525054535352535451524849464240
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue

us-gaap:EstimateOfFairValueFairValueDisclosure


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value172023303731252627242625272526
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue

us-gaap:EstimateOfFairValueFairValueDisclosure


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252014-12-26
Value23232218119.010.09.08.08.0141716178.010.07.06.04.02.03.0122742100
Percentage of AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


Available
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value9695101108434195
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0

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

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


Available
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value666568595661
Percentage of AvailableForSaleSecuritiesDebtSecurities68.868.467.35.416.464.2

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


Available
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value303033363534
Percentage of AvailableForSaleSecuritiesDebtSecurities31.231.632.73.310.335.8

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FairValueByMeasurementBasis

us-gaap:EstimateOfFairValueFairValueDisclosure


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value96951011023045791084112696490634170617195
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.00.00.00.0100.00.00.00.0100.00.00.0100.0

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

us-gaap:DebtInstrumentFairValue

us-gaap:FairValueInputsLevel2, us-gaap:CarryingReportedAmountFairValueDisclosure


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282012-12-28
Value16351163471670516492165061673216238167371576715766147571377213788137871180911807118251129411293105191053710536107031010610125974197429617930993469555905193759832
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282012-12-28
Value1961918765210762045720733187781850318923175361679114914141731406914487132201308213168120551209612235121741149611340107701078811379110421071510563104111035498841041711562
Percentage of DebtInstrumentFairValue120.0114.8126.2124.0125.6112.2113.9113.1111.2106.5101.1102.9102.0105.1111.9110.8111.4106.7107.1116.3115.5109.1106.0106.6106.5116.8113.3111.4113.5111.4108.4109.2111.1117.6

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value320426529657225261256257278354353365
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value96127146182272258306299292309311303
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value6271794112520718867249300243223
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value451565645722293291334262252234211135
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value719570206799657699259614913388688544814875577126
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value31342963262328732717
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value7874103-7.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-854.0-879.0-888.0-705.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax-1094.9-1187.8-862.110071.4

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value-96000000.0-117000000.0-118000000.0-250000000.0-274000000.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value-257000000.0-297000000.0-327000000.0-169000000.0-332000000.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet267.7253.8277.167.6121.2

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value292513579.0
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312017-03-312016-12-30
Value2.070.02870.03980.03340.03590.0371
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312017-06-302017-03-312016-12-30
Value2.430.03130.04240.03560.03940.04080.0408
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate117.4109.1106.5106.60.0113.6110.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-25
Value96117118250274314
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-25
Value325731222758300228712860
Percentage of DefinedBenefitPlanBenefitObligation3392.72668.42337.31200.81047.8910.8

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value28343276
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value898897886888
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter3207.12638.22768.81168.4

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value17203438
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value196193192198
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths1152.9965.0564.7521.1

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value8.09.09.022
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value185182180183
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive2312.52022.22000.0831.8

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value8.09.010.024
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value186184183186
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour2325.02044.41830.0775.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value9.010.01126
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value187186185189
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree2077.81860.01681.8726.9

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value10.0121328
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value188188186193
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo1880.01566.71430.8689.3

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value300028252400283325392309250425002294185018511781
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value-96000000.0-117000000.0-118000000.0-250000000.0-274000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value-257000000.0-297000000.0-327000000.0-169000000.0-332000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan267.7253.8277.167.6121.2

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets


Defined
Period End2020-12-31
Value2884
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets100.0

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation


Defined
Period End2020-12-31
Value3170
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets


Defined
Period End2020-12-31
Value2884
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation


Defined
Period End2020-12-31
Value264
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation100.0

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value100.01.01.01.01.01.01.01.01.01.01.01.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:DefinedBenefitPlanByPlanAssetCategories

csx:DefinedBenefitPlanEquitySecuritiesCashAndCashEquivalents


Defined
Period End2020-12-312019-12-31
Value8.01.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations8.0100.0

csx:DefinedBenefitPlanEquitySecuritiesEquity


Defined
Period End2020-12-312019-12-31
Value44.063.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations44.06300.0

csx:DefinedBenefitPlanEquitySecuritiesFixedIncome


Defined
Period End2020-12-312019-12-31
Value9.08.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations9.0800.0

csx:DefinedBenefitPlanFixIncomeFundsFixedIncome


Defined
Period End2020-12-312019-12-31
Value34.021.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations34.02100.0

csx:DefinedBenefitPlanFixedIncomeFundsCashAndCashEquivalents


Defined
Period End2020-12-312019-12-31
Value5.07.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations5.0700.0

us-gaap:DefinedBenefitPlanEquitySecurities


Defined
Period End2020-12-312019-12-31
Value61.072.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations61.07200.0

us-gaap:FixedIncomeFunds


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value39.00.290.290.260.260.280.30.320.360.41
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations39.029.029.026.026.028.030.032.036.041.0

us-gaap:DerivativeAssetNotionalAmount us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:DerivativeAssetNotionalAmount

us-gaap:InterestRateSwap, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-07-092020-06-302020-04-29
Value108153804450011250
Percentage of DerivativeAssetNotionalAmount100.0100.0100.0100.0100.0100.0100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationConsideration us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupIncludingDiscontinuedOperationConsideration

us-gaap:DisposalGroupHeldForSaleOrDisposedOfBySaleNotDiscontinuedOperations, csx:LineSegments


Disposal
Period End2021-03-26
Value525
Percentage of DisposalGroupIncludingDiscontinuedOperationConsideration100.0

us-gaap:DueToAffiliateCurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:BalanceSheetLocation, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DueToAffiliateCurrent

csx:Conrail, us-gaap:AccountsPayable, us-gaap:CorporateJointVenture


Due
Period End2020-12-312019-12-31
Value50213
Percentage of DueToAffiliateCurrent100.0100.0

csx:TTXCompany, us-gaap:AccountsPayable, srt:AffiliatedEntity


Due
Period End2020-12-312019-12-31
Value4034
Percentage of DueToAffiliateCurrent80.016.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value447419482436352345489486412406550517486443602601506445545450464398490447480410613507490404587511452376468416434392541474430336520383
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

csx:RestrictedStockUnitsRSUsandRestrictedStock


Employee
Period End2020-12-312019-12-31
Value9.08.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions100.0100.0

us-gaap:EmployeeStockOption


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value18151310.015
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions200.0187.50.00.00.0

us-gaap:PerformanceShares


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value2.023382418
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions22.2287.50.00.00.0

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity

csx:Conrail, us-gaap:CorporateJointVenture


Equity
Period End2020-12-31
Value335
Percentage of EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity100.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:EquityMethodInvestmentOwnershipPercentage

csx:Conrail, us-gaap:CorporateJointVenture


Equity
Period End2020-12-31
Value42.0
Percentage of EquityMethodInvestmentOwnershipPercentage100.0

csx:TTXCompany, srt:AffiliatedEntity


Equity
Period End2020-12-31
Value20.0
Percentage of EquityMethodInvestmentOwnershipPercentage47.6

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2020-12-312019-12-31
Value3000000.04000000.0
Percentage of FinanceLeaseLiability100.0100.0

us-gaap:InvestmentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:InvestmentsFairValueDisclosure

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-302016-09-232015-12-252014-12-262013-06-282012-12-28
Value1023045791084112696490634170617195189554500226915442582728
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

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


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-302016-09-232015-12-252014-12-262013-06-282012-12-28
Value68675659626159565657616060636273141131122
Percentage of InvestmentsFairValueDisclosure66.722.09.75.45.56.36.516.47.933.364.231.710.812.627.48.031.922.516.8

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


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-302016-09-232015-12-252014-12-26
Value3435373635343435403934292922143251
Percentage of InvestmentsFairValueDisclosure33.311.56.43.33.13.53.810.35.722.835.815.35.24.46.23.511.5

us-gaap:LesseeFinanceLeaseDiscountRate

us-gaap:LesseeFinanceLeaseDiscountRate


Lessee
Period End2020-12-31
Value14.5
Percentage of LesseeFinanceLeaseDiscountRate100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-312019-12-31
Value4758
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

csx:Conrail, us-gaap:CorporateJointVenture


Lessee
Period End2020-12-31
Value30
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths63.8

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012011-04-012010-12-312009-12-25
Value12241401371378255245745245181818191919191933133163163220201818228228230899325533264564572780806508502507494494503613113
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent us-gaap:BalanceSheetLocation

csx:CurrentLiabilities


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-28
Value12241401371378255245745245181818191919191933133163163220201818228228230899325533264564572780
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:LossContingencyAccrualAtCarryingValue


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262010-12-312009-12-252008-12-262007-12-28
Value312318314309306309305305309319324341346364374375363366374374379385400416426427418678737879871
Percentage of LossContingencyAccrualAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyAccrualAtCarryingValue us-gaap:LossContingenciesByNatureOfContingency

csx:OccupationalCasualty


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-28
Value626365636162585958545654546060596058599.09.0111217171718182123232736
Percentage of LossContingencyAccrualAtCarryingValue19.919.820.720.419.920.119.019.318.816.917.315.815.616.516.015.716.515.815.82.42.42.93.04.14.04.04.30.00.00.00.00.00.0

csx:OtherReserves


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-12-302010-12-31
Value4441424343434443434445485453566253475048494749555460596264657166646459
Percentage of LossContingencyAccrualAtCarryingValue14.112.913.413.914.113.914.414.113.913.813.914.115.614.615.016.514.612.813.412.812.912.212.213.212.714.114.10.00.00.00.00.00.00.08.7

csx:PersonalInjuryCasualty


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-28
Value129137131129127127129125130141143150147162168165163168170192191200204203205200191198199199207201233
Percentage of LossContingencyAccrualAtCarryingValue41.343.141.741.741.541.142.341.042.144.244.144.042.544.544.944.044.945.945.551.350.451.951.048.848.146.845.70.00.00.00.00.00.0

csx:TotalCasualty


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-12-302010-12-31
Value191200196192188189187184188195199204201222228224223226229247246258269273277273265263269272280279325372375
Percentage of LossContingencyAccrualAtCarryingValue61.262.962.462.161.461.261.360.360.861.161.459.858.161.061.059.761.461.761.266.064.967.067.265.665.063.963.40.00.00.00.00.00.00.055.3

us-gaap:EnvironmentalIssue


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-12-302010-12-31
Value77777674757774787880808991899089879395798480828895949410710797100888883107
Percentage of LossContingencyAccrualAtCarryingValue24.724.224.223.924.524.924.325.625.225.124.726.126.324.524.123.724.025.425.421.122.220.820.521.222.322.022.50.00.00.00.00.00.00.015.8

us-gaap:LossContingencyAccrualCarryingValueCurrent

us-gaap:LossContingencyAccrualCarryingValueCurrent


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272011-04-012010-12-312009-12-25
Value102899010410399100110110112113110114106108122115114115124133130131146146141142151151149151174176190
Percentage of LossContingencyAccrualCarryingValueCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyAccrualCarryingValueCurrent us-gaap:LossContingenciesByNatureOfContingency

csx:OccupationalCasualty


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value7.011119.09.06.06.09.09.010.010.07.07.07.06.04.04.07.07.04.04.03.03.03.03.03.03.03.03.03.03.04.05.010.010.0
Percentage of LossContingencyAccrualCarryingValueCurrent6.912.412.28.78.76.16.08.28.28.98.86.46.16.65.63.33.56.16.13.23.02.32.32.12.12.12.12.02.02.02.00.00.05.75.7

csx:OtherReserves


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value2117182120202122222324242826283023192018191920222217181616172018192426
Percentage of LossContingencyAccrualCarryingValueCurrent20.619.120.020.219.420.221.020.020.020.521.221.824.624.525.924.620.016.717.414.514.314.615.315.115.112.112.710.610.611.413.20.00.013.814.8

csx:PersonalInjuryCasualty


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value4438384444424247474140424242434545464657575757585868686363605979757878
Percentage of LossContingencyAccrualCarryingValueCurrent43.142.742.242.342.742.442.042.742.736.635.438.236.839.639.836.939.140.440.046.042.943.843.539.739.748.247.941.741.740.339.10.00.044.844.3

csx:TotalCasualty


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value5149495353484856565150494949494949535365736869666676767676737290889797
Percentage of LossContingencyAccrualCarryingValueCurrent50.055.154.451.051.548.548.050.950.945.544.244.543.046.245.440.242.646.546.152.454.952.352.745.245.253.953.550.350.349.047.70.00.055.755.1

us-gaap:EnvironmentalIssue


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-28
Value302323303031313232383937373131434342424141434258584848595959594133
Percentage of LossContingencyAccrualCarryingValueCurrent29.425.825.628.829.131.331.029.129.133.934.533.632.529.228.735.237.436.836.533.130.833.132.139.739.734.033.839.139.139.639.10.00.0

us-gaap:LossContingencyAccrualCarryingValueNoncurrent

us-gaap:LossContingencyAccrualCarryingValueNoncurrent


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272011-04-012010-12-312009-12-25
Value210229224205203210205195199207211231232258266253248252259250246255269270280286276281289285300491502547
Percentage of LossContingencyAccrualCarryingValueNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyAccrualCarryingValueNoncurrent us-gaap:LossContingenciesByNatureOfContingency

csx:OccupationalCasualty


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value555254545256525049444647475354555651525.05.08.09.0141414151518202023313130
Percentage of LossContingencyAccrualCarryingValueNoncurrent26.222.724.126.325.626.725.425.624.621.321.820.320.320.520.321.722.620.220.12.02.03.13.35.25.04.95.45.36.27.06.70.00.06.36.0

csx:OtherReserves


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value232424222323232121212124262728323028303030282933324341464848514845110110
Percentage of LossContingencyAccrualCarryingValueNoncurrent11.010.510.710.711.311.011.210.810.610.110.010.411.210.510.512.612.111.111.612.012.211.010.812.211.415.014.916.416.616.817.00.00.022.421.9

csx:PersonalInjuryCasualty


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value859993858385877883100103108105120125120118122124135134143147145147132123135136139148122158178176
Percentage of LossContingencyAccrualCarryingValueNoncurrent40.543.241.541.540.940.542.440.041.748.348.846.845.346.547.047.447.648.447.954.054.556.154.653.752.546.244.648.047.148.849.30.00.036.335.1

csx:TotalCasualty


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-282011-04-012010-12-31
Value140151147139135141139128132144149155152173179175174173176182173190200207211197189187193199208189237274278
Percentage of LossContingencyAccrualCarryingValueNoncurrent66.765.965.667.866.567.167.865.666.369.670.667.165.567.167.369.270.268.768.072.870.374.574.376.775.468.968.566.566.869.869.30.00.055.855.4

us-gaap:EnvironmentalIssue


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272012-12-28
Value475453444546434646424152545859464451533843374030374646484838414755
Percentage of LossContingencyAccrualCarryingValueNoncurrent22.423.623.721.522.221.921.023.623.120.319.422.523.322.522.218.217.720.220.515.217.514.514.911.113.216.116.717.116.613.313.70.00.0

us-gaap:LossContingencyEstimateOfPossibleLoss us-gaap:Range, us-gaap:LitigationStatus

us-gaap:LossContingencyEstimateOfPossibleLoss

srt:Maximum, us-gaap:PendingLitigation


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value232024414338292855102120118117
Percentage of LossContingencyEstimateOfPossibleLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Minimum, us-gaap:PendingLitigation


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2.01.01.02.01.01.01.01.03.04.03.02.02.0
Percentage of LossContingencyEstimateOfPossibleLoss8.75.04.24.92.32.63.43.65.53.92.51.71.7

us-gaap:MaterialsSuppliesAndOther

us-gaap:MaterialsSuppliesAndOther


Materials
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-302016-09-232016-06-242016-03-252015-12-252015-09-252015-06-262015-03-272014-12-262014-09-262014-06-272014-03-282013-12-272013-09-272013-06-282013-03-292012-12-282012-09-282012-06-292012-03-302011-12-302011-09-302011-07-012010-12-31
Value289298302253246257261235222241263283326369372392428415407397399370350309295291273276275259252267264283274264256251240236251218
Percentage of MaterialsSuppliesAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NotesPayableRelatedPartiesNoncurrent us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:BalanceSheetLocation, us-gaap:DebtInstrument, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:NotesPayableRelatedPartiesNoncurrent

csx:Conrail, us-gaap:LongTermDebt, csx:CSXPromissoryNoteRelatedPartyDecember2050, us-gaap:CorporateJointVenture


Notes
Period End2020-12-31
Value73
Percentage of NotesPayableRelatedPartiesNoncurrent100.0

csx:Conrail, us-gaap:LongTermDebt, csx:CSXTPromissoryNoteRelatedPartyDecember2050, us-gaap:CorporateJointVenture


Notes
Period End2020-12-31
Value368
Percentage of NotesPayableRelatedPartiesNoncurrent504.1

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value1720343839
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-30
Value1617161515
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities94.185.047.139.538.5

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

csx:RestrictedStockUnitsRSUsandRestrictedStock


Share
Period End2020-12-312019-12-312018-12-31
Value352000.0427000.0684000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, csx:LongTermIncentivePlans


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-25
Value640000.0643000.0722000.0976000.01581000.01941000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber181.8150.6105.60.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

csx:RestrictedStockUnitsRSUsandRestrictedStock


Share
Period End2020-12-312019-12-312018-12-31
Value67.0857.2939.3
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0

us-gaap:PerformanceShares


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-26
Value76.1766.1855.5749.524.1735.4528.13
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue113.6115.5141.40.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, csx:LongTermIncentivePlans


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-25
Value71.5960.5852.5833.930.031.73
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue106.7105.7133.80.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-25
Value79.5870.0154.1949.6324.1324.99
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber


Share
Period End2020-12-31
Value1257000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice


Share
Period End2020-12-31
Value40.05
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue


Share
Period End2020-12-31
Value126
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1


Sharebased
Period End2020-12-31
Value64
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares


Sharebased
Period End2020-12-312019-12-31
Value4217000.03795000.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares100.0100.0

us-gaap:ShortTermBorrowings us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:ShortTermBorrowings

csx:Conrail


Short
Period End2020-12-31
Value217
Percentage of ShortTermBorrowings100.0

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1


Stock
Period End2021-06-302021-03-312020-12-31
Value460053005900
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1100.0100.0100.0

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 us-gaap:ShareRepurchaseProgram

csx:ShareRepurchaseProgramJanuary2019


Stock
Period End2021-03-312020-12-312020-09-30
Value3398891100
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount16.415.10.0

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

csx:ShareRepurchaseProgramOctober2020, us-gaap:SubsequentEvent


Stock
Period End2020-10-21
Value6100
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount10.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-302010-12-312009-12-25
Value1310.09.0191615131517151541
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value298290269258310328170226252297
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

csx:LocomotivePurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value284273242225274316159220247285
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary95.394.190.087.288.496.393.597.398.096.0

csx:OtherPurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value141727333612116.05.012
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary4.75.910.012.811.63.76.52.72.04.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value234292242290363680963613559828
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

csx:LocomotivePurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value195233137171234570727292472475
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary83.379.856.659.064.583.875.547.684.457.4

csx:OtherPurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value395910511912911023632187353
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary16.720.243.441.035.516.224.552.415.642.6

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value284254275258316323181238271322
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

csx:LocomotivePurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value270237242223270306169232257288
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary95.193.388.086.485.494.793.497.594.889.4

csx:OtherPurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value141733354617126.01434
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary4.96.712.013.614.65.36.62.55.210.6

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value226197280229336635496319406357
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

csx:LocomotivePurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value204178232162244561474253347301
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary90.390.482.970.772.688.395.679.385.584.3

csx:OtherPurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value22194867927422665956
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary9.79.617.129.327.411.74.420.714.515.7

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value248229272253312307190260306336
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

csx:LocomotivePurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value228211237218260287177245263300
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary91.992.187.186.283.393.593.294.285.989.3

csx:OtherPurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value20183535522013154336
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary8.17.912.913.816.76.56.85.814.110.7

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312017-09-302016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value32753710403742171700558068523272302336814628
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

csx:LocomotivePurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value3073346936053700497265552909255634194078
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount93.893.589.387.789.195.788.984.692.988.1

csx:OtherPurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value202241432502608297363467262550
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount6.26.510.711.910.94.311.115.47.111.9

us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears

us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value1985244826992929394345791272136718872488
Percentage of UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

csx:LocomotivePurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value1892233725152716369045151203131418332429
Percentage of UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears95.395.593.292.793.698.694.696.197.197.6

csx:OtherPurchaseObligations


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-302015-12-252014-12-262013-12-272012-12-282011-12-30
Value931111842132536469535459
Percentage of UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears4.74.56.87.36.41.45.43.92.92.4

Line plots across dimensions of each concept


TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType
(None,)
Allocated Share Based Compensation Expenseus-gaap: Award Type
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Accumulated Depreciation Depletion And Amortization Property Plant And Equipmentus-gaap: Property Plant And Equipment By Type
us-gaap:PropertyPlantAndEquipmentNet
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Netus-gaap: Property Plant And Equipment By Type
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
us-gaap:InvestmentsInAndAdvancesToAffiliatesCategorization
(None,)
Investments In Affiliates Subsidiaries Associates And Joint Venturesus-gaap: Investments In And Advances To Affiliates Categorization
us-gaap:DebtAndCapitalLeaseObligations
us-gaap:LongtermDebtType
(None,)
Debt And Capital Lease Obligationsus-gaap: Longterm Debt Type
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanType
(None,)
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrentus-gaap: Retirement Plan Type
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Equity Components