CP


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

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

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

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostsAndExpenses
us-gaap:BusinessAcquisition
us-gaap:GainLossOnInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:OperatingExpenses

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:OtherComprehensiveIncomeLocation

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService

us-gaap:Revenues
us-gaap:ProductOrService

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

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:Goodwill
us-gaap:BusinessAcquisition

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:BalanceSheetLocation

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:DividendsPayableCurrent

us-gaap:LiabilitiesCurrent
us-gaap:BalanceSheetLocation
us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:TaxesPayableCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanType

us-gaap:OtherLiabilitiesNoncurrent
us-gaap:BalanceSheetLocation
us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:OtherComprehensiveIncomeLocation

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:UnrecognizedTaxBenefits

us-gaap:LitigationReserveCurrent
us-gaap:LitigationCase, us-gaap:LossContingenciesByNatureOfContingency
cp:AmountofFundtobeDistributed

cp:BusinessCombinationAcquisitionRelatedCostsOtherIncomeExpense

cp:ContractwithCustomersLiabilityIncreaseDueToCashReceived

cp:EffectiveIncomeTaxRateReconciliationEstimatedRateExcludingDiscreteItemsPercent

cp:EquipmentRents

cp:Foreignexchangegainlossondebtandleaseliabilities
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
cp:GainLossOnDisposalOfPropertiesAfterTax
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
cp:GainLossOnSaleOfPropertiesAfterTax
us-gaap:CounterpartyName, us-gaap:LitigationCase
cp:LossContingencyDamagesSoughtPreviouslyValue
us-gaap:CounterpartyName, us-gaap:LitigationCase, us-gaap:LossContingenciesByNatureOfContingency

cp:NetCashAcquiredinBusinessCombination
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
cp:NetInvestmentHedgeGainLossOnDerivativeNet
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
cp:NetInvestmentHedgeGainLossOnDesignatedDebtNet

cp:OtherincomeexpenseOther
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
cp:ProceedsFromPropertiesAndEasements

cp:PurchasedServicesandOther
us-gaap:AwardType
cp:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEstimatedForfeitureRate
us-gaap:AwardType
cp:ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValue

us-gaap:AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease
us-gaap:ProductOrService

us-gaap:BasicEarningsPerShareProForma

us-gaap:BusinessCombinationAcquisitionRelatedCosts
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition, us-gaap:IncomeStatementLocation
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1
us-gaap:AwardType
us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:CostDirectMaterial

us-gaap:CurrentIncomeTaxExpenseBenefit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanContributionsByEmployer
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:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DilutedEarningsPerShareProForma

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents
us-gaap:IncomeStatementLocation
us-gaap:EnvironmentalRemediationExpense

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:FuelCosts

us-gaap:GainLossOnContractTermination
us-gaap:DerivativeInstrumentRisk
us-gaap:GainLossOnDerivativeInstrumentsNetPretax
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:GainLossOnSaleOfProperties

us-gaap:IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet

us-gaap:InterestRevenueExpenseNet

us-gaap:LaborAndRelatedExpense

us-gaap:LeaseIncome
us-gaap:CounterpartyName, us-gaap:LitigationCase
us-gaap:LossContingencyDamagesSoughtValue
us-gaap:CounterpartyName, us-gaap:LitigationCase, us-gaap:LossContingenciesByNatureOfContingency

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent
us-gaap:RetirementPlanType
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:OtherComprehensiveIncomeLocation

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfMergerRelatedCostsFinancingActivities
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired
us-gaap:StatementScenario, us-gaap:SubsequentEventType
us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:PensionExpenseReversalOfExpenseNoncash

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromRepaymentsOfCommercialPaper

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit

us-gaap:ProceedsFromSaleOfOtherProductiveAssets

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:OtherComprehensiveIncomeLocation

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments
us-gaap:StatementScenario, us-gaap:AwardType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:StockGrantedDuringPeriodValueSharebasedCompensationGross

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodShares
us-gaap:ShareRepurchaseProgram

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:ShareRepurchaseProgram
us-gaap:StatementEquityComponents
us-gaap:ShareRepurchaseProgram
us-gaap:TreasuryStockAcquiredAverageCostPerShare
us-gaap:DerivativeInstrumentRisk
us-gaap:UnrealizedGainLossOnDerivatives

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment
us-gaap:PropertyPlantAndEquipmentByType
cp:AnnualDepreciationRate
us-gaap:BusinessAcquisition
cp:BusinessCombinationConsiderationTransferredEntitySharesIssuedPerAcquireeShare
us-gaap:BusinessAcquisition
cp:BusinessCombinationConsiderationTransferredEntitySharesIssuedPerAcquireeSharePostShareSplit
us-gaap:BusinessAcquisition
cp:BusinessCombinationMilesOfRailTunnelAcquired
us-gaap:BusinessAcquisition
cp:BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesAccountsPayableandAccruedLiabilities
us-gaap:BusinessAcquisition
cp:BusinessCombinationTransactionValue

cp:DebtAndFinanceLeaseLiabilitiesExcludingCommercialPaper

cp:DebtAndLeaseObligationExcludingCommercialPaper

cp:Debtandfinanceleaseliabilities
us-gaap:RetirementPlanType
cp:DeferredInvestmentGainsLosses

cp:DeferredRealEstateLeaseAndLicenseRevenue

cp:DeferredRealEstateLeaseAndLicenseRevenueNonCurrent
us-gaap:RetirementPlanType
cp:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeDeferredIncomeTax
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType
cp:DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationAccumulatedPlanAssets
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType
cp:DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationPlanAssets
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType
cp:DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationProjectedBenefitObligation
us-gaap:DefinedBenefitPlanByPlanAssetCategories
cp:FundValueNotSubjecttoRedemption
us-gaap:DefinedBenefitPlanByPlanAssetCategories
cp:FundValueSubjecttoRedemption

cp:LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent
us-gaap:Currency
us-gaap:LongtermDebtType

cp:LongtermAssetsExcludingFinancialInstrumentsAndPensionAssets
us-gaap:StatementGeographical

cp:LongtermDebtandFinanceLeaseObligationCurrentandNoncurrentexcludingPerpetualDebt
us-gaap:RetirementPlanType
cp:OtherThanDeferredInvestmentGains
us-gaap:Currency
cp:PercentageOfDefinedBenefitPlanExposedToForeignCurrencyRisk
us-gaap:Currency
cp:PercentageOfDefinedBenefitPlanExposedToForeignCurrencyRiskExcludingCurrencyForwards
us-gaap:StatementScenario, us-gaap:SubsequentEventType
cp:PercentageofVotingIntereststobeAcquired
us-gaap:AwardType
cp:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsIntheMoneyWeightedAverageExercisePrice
us-gaap:AwardType
cp:SharebasedCompensationArrangementbySharebasedPaymentAwardRatioEmployerMatchPerDollarContributed

cp:Solvencyfundedpositionhedgedagainstinterestraterisk
us-gaap:BusinessAcquisition
cp:TerminationFeeEarlyContractTerminationChangeInBoardRecommendation
us-gaap:BusinessAcquisition
cp:TerminationFeeEarlyContractTerminationRequiredRegulatoryApproval
us-gaap:DerivativeInstrumentRisk
cp:UnamortizedLossesRelatedToInterestRateLocksAccountedAsCashFlowHedges

dei:EntityCommonStockSharesOutstanding

us-gaap:AccountsPayableTradeCurrent

us-gaap:AccountsReceivableGross
us-gaap:ProductOrService

us-gaap:AccountsReceivableNet
us-gaap:ProductOrService

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AccruedEnvironmentalLossContingenciesCurrent

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent

us-gaap:AccruedSalariesCurrent

us-gaap:AccruedVacationCurrent

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
us-gaap:RetirementPlanType

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:AllowanceForDoubtfulAccountsReceivable
us-gaap:ProductOrService

us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired
us-gaap:BusinessAcquisition, us-gaap:StatementEquityComponents
us-gaap:BusinessAcquisitionSharePrice
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage

us-gaap:CapitalLeasedAssetsGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:CapitalLeasesBalanceSheetAssetsByMajorClassNet
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:DerivativeInstrumentRisk
us-gaap:CashFlowHedgeDerivativeInstrumentAssetsAtFairValue
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet

us-gaap:CommercialPaper
us-gaap:DebtInstrument
us-gaap:LongtermDebtType

us-gaap:ContractWithCustomerLiability
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentCollateralAmount
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount

us-gaap:DeferredCompensationShareBasedArrangementsLiabilityCurrent

us-gaap:DeferredCompensationSharebasedArrangementsLiabilityClassifiedNoncurrent

us-gaap:DeferredCosts

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent

us-gaap:DeferredFinanceCostsNet
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DeferredGainOnSaleOfProperty

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredRevenueCurrent

us-gaap:DeferredRevenueNoncurrent

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsUnrealizedCurrencyLosses

us-gaap:DeferredTaxLiabilitiesDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanAmountOfEmployerAndRelatedPartySecuritiesIncludedInPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
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:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:RetirementPlanType
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeNet
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:SubsequentEventType
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:SubsequentEventType
us-gaap:EquityMethodInvestmentOwnershipPercentage

us-gaap:EquityMethodInvestments
us-gaap:BusinessAcquisition
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:GuaranteeObligationsCurrentCarryingValue

us-gaap:InterestPayableCurrent

us-gaap:InventoryNoncurrent

us-gaap:Investments

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:CreditFacility
us-gaap:LettersOfCreditOutstandingAmount
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities

us-gaap:LongTermDebtFairValue

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:MaterialsSuppliesAndOther

us-gaap:OperatingLeaseResidualValueOfLeasedAsset

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:ConsolidatedEntities
us-gaap:OperatingLeasesFutureMinimumPaymentsDue

us-gaap:OperatingLossCarryforwards

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherInvestments
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:PurchaseObligation

us-gaap:SaleLeasebackTransactionDeferredGainNet
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:SharePrice
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:AwardType
us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:DebtInstrument
us-gaap:ShortTermDebtWeightedAverageInterestRate
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Finite Lived Intangible Assets Net
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Finite Lived Intangible Assets Net
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Other Liabilities Current
Noncurrent Liabilities
Other Liabilities Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
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
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Accumulated Amortization

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:CommonStockValue ▃▂▁▁▂▂▂▁▂▃▃▄▄▅▅▅▆▆▃▃▃█▇2003.01993.01983.01978.01990.01985.01993.01982.01996.01997.02002.02017.02013.02022.02032.02025.02038.02036.02002.02000.02000.02065.02058.0NANANA2185.0NANANA
us-gaap:CommonStockSharesIssued NANA133.3NANANA137.0NANANA140.5NANANA144.9NANANA146.3NANANA153.0NANANA166.1NANANA
us-gaap:CommonStockSharesOutstanding █▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁666.8133.3133.3134.5135.5135.6137.0137.5139.1139.8140.5142.6142.5143.7144.9145.0146.1146.7146.3146.3148.4153.0153.0153.8161.3164.0166.1NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁669.9133.9NA135.8136.1137.2NA138.7140.2140.5NA143.1143.2144.8NA145.8146.9147.1NA148.3152.6153.8NA158.7165.0166.3NANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁666.7133.3NA135.2135.6136.7NA138.1139.7140.1NA142.6142.8144.4NA145.5146.5146.5NA147.3151.7153.0NA157.6163.7164.9NANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOption0.0NANANA0.20.1NA0.00.00.2NA0.30.10.2NA0.2559280.2698550.502NA0.3315530.4400090.445991NA0.3640140.1750680.000883NANANANA
us-gaap:EarningsPerShareBasic ▂▅▇▅▅▃▅▅▆▃▄▅▃▂█▄▃▃▃▂▂▄▂▂▂▂▃▂▂▁1.874.525.974.424.682.994.844.475.193.13.844.363.052.416.793.53.282.942.632.352.163.532.092.052.381.942.662.332.131.45
us-gaap:EarningsPerShareDiluted ▂▅▇▅▅▃▅▅▆▃▄▅▃▂█▄▃▃▃▂▂▄▂▂▂▂▃▂▂▁1.864.55.954.414.662.984.824.465.173.093.834.353.042.416.773.53.272.932.612.342.153.512.082.042.361.922.632.312.111.44
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
 TTM Greenblatt ROC _ _▆▅█▅▅▆▇▇▆▁▇▆▃▁▅▄▄▃▄▃▁▃▃▅▃▂▄820.0780.0928.0779.0770.0834.0890.0869.0822.0543.0874.0790.0627.0540.0753.0690.0679.0671.0717.0657.0551.0653.0677.0753.0646.0612.0708.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:AllocatedShareBasedCompensationExpense ▅▄██▆▃▇▄▆▅▄▅▄▄▄▃▄▁▃▅▂▄▄▄▃▅25.024.060.056.043.011.045.015.039.034.015.028.018.014.019.011.017.0-12.05.031.01.014.021.021.05.029.0NANANANA
us-gaap:ComprehensiveIncomeNetOfTax █▅▃▅▅▄▂▅▅▄▂▅▄▃▇▄▄▄▁▃▃▄▆▃▄▃1211.0660.0404.0632.0665.0451.0134.0635.0742.0450.0156.0641.0468.0384.0958.0535.0509.0461.018.0385.0338.0536.0955.0343.0464.0332.0NANANANA
us-gaap:CostsAndExpenses █▁1234.01179.0NANA1022.01209.0NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainLossOnInvestments us-gaap:BusinessAcquisition cp:DRTPNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▃▄▃▃▁▄▃▃▁▂▃▁1503.0793.0997.0787.0824.0594.0896.0829.0848.0573.0739.0821.0558.0NANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit █▇▇▇▇▇█▇▆▇▇▇▆▆▁▇▇▇▇▆▆▇▇▇▅▇257.0191.0195.0189.0189.0185.0232.0211.0124.0139.0194.0199.0122.0122.0-363.0170.0138.0148.0143.0123.0117.0170.0137.0159.023.0134.0NANANANA
us-gaap:IncomeTaxesPaidNet ▄▄▄█▁▄▄▄▃▄▃▃▂▃▂▃▄▅▂▁▃▅▃▂▂▁139.0133.0127.0311.05.0139.0127.0122.0108.0149.088.074.052.0104.061.078.0116.0170.048.017.065.0192.069.048.062.0-3.0NANANANA
us-gaap:InterestPaidNet ▁▇▁█▁█▂▇▃▇▃▇57.0155.060.0163.063.0157.071.0141.083.0149.083.0147.0NANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss █▃▅▃▄▂▄▄▄▂▃▄▂▂▆▃▃▂▂▂▂▃▁▁▂▁▂▂▂▁1246.0602.0802.0598.0635.0409.0664.0618.0724.0434.0545.0622.0436.0348.0984.0510.0480.0431.0384.0347.0328.0540.0319.0323.0390.0320.0451.0400.0371.0254.0
us-gaap:OperatingExpenses NANANA1084.01022.01209.01179.01110.01155.01224.01132.01108.01123.01122.0960.0905.0964.0932.0920.0897.0899.0938.01010.0956.01005.01053.0NANANANA
us-gaap:OperatingIncomeLoss ▇▆█▆▆▇▇▇▇▃▇▆▄▃▆▅▅▄▅▄▃▄▅▆▄▄▅▄▃▁820.0780.0928.0779.0770.0834.0890.0869.0822.0543.0874.0790.0627.0540.0753.0690.0679.0671.0717.0657.0551.0653.0677.0753.0646.0612.0708.0621.0587.0423.0
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▇█▃███▁███▃███▇███▃█▇▇-35.058.0-398.034.030.042.0-530.017.018.016.0-389.019.032.036.0-26.025.029.030.0-366.038.010.0-4.0NANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:OtherComprehensiveIncomeLocation us-gaap:AccumulatedDefinedBenefitPlansAdjustment██▃███▁███▃███▇███▂█39.039.0-397.033.033.033.0-532.015.016.015.0-395.020.021.021.0-22.028.027.028.0-419.035.0NANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:OtherComprehensiveIncomeLocation us-gaap:AccumulatedGainLossNetCashFlowHedgeParent▁█▇▇▇▇▇▇▇▇▇▇-72.019.02.02.00.02.03.01.03.01.02.00.0NANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:OtherComprehensiveIncomeLocation us-gaap:AccumulatedTranslationAdjustment-2.0NANA-1.0-3.07.0-1.01.0-1.00.04.0-1.01.00.0-10.0-5.0-1.0-2.01.02.0NANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▁▆█▆█▅▅▅▅▅▅▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅-157.028.096.036.086.0-1.0-6.0-2.0-1.0-1.0-4.08.0-4.0-3.0-4.0-3.0-3.0-1.00.02.0-9.0-7.0-4.0-3.0-5.0-3.0NANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇▇▆▅██▇▇▄▇▆▄▃▄▂▃▃▃▂▁▃▄▄▃▃▅▃▄▂2034.01942.02012.01848.01777.02029.02069.01964.01961.01752.02006.01882.01734.01648.01713.01581.01627.01591.01637.01554.01450.01591.01687.01709.01651.01665.01760.01670.01681.01509.0
us-gaap:Revenues █▇▇▆▅██▇▇▅▇▆▄▃▄▃▃▃▃▂▁▃▄▄▃▃▅▃▄▂2054.01959.02012.01863.01792.02043.02069.01979.01977.01767.02006.01898.01750.01662.01713.01595.01643.01603.01637.01554.01450.01591.01687.01709.01651.01665.01760.01670.01681.01509.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:Assets █▇▇▇▇▆▅▅▅▅▄▄▃▃▂▂▂▁▁▁▁▁▂24704.024121.023640.023787.023562.023488.022367.022539.021933.021910.021254.021109.020685.020318.020135.019479.019537.019397.019221.019421.019068.019349.019637.0NANANA16550.0NANANA
us-gaap:Liabilities ▆▇▇▇▇█▅▅▄▄▃▂▂▁▁▂▂▃▃▄▃▂▄15739.016255.016321.016208.016097.016533.015298.015324.014776.015096.014618.013981.014111.013884.013698.013914.014204.014359.014595.014752.014377.014059.014841.0NANANA10940.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▇▇▆▅▅▅▅▄▄▃▃▂▂▂▁▁▁▁▁▂24704.024121.023640.023787.023562.023488.022367.022539.021933.021910.021254.021109.020685.020318.020135.019479.019537.019397.019221.019421.019068.019349.019637.0NANANA16550.0NANANA
us-gaap:StockholdersEquity █▆▆▆▆▅▅▆▅▅▅▅▅▄▄▃▃▂▂▂▂▃▂▁▃▃▃8965.07866.07319.07579.07465.06955.07069.07215.07157.06814.06636.07128.06574.06434.06437.05565.05333.05038.04626.04669.04691.05290.04796.03992.05251.05418.05610.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:AssetsCurrent █▆▄▄▄▄▃▃▂▄▂▂▂▂▃▁▂▂▂▁▁▄▅1987.01624.01321.01324.01355.01407.01210.01186.01115.01376.01117.01130.01000.01117.01274.0992.01119.01110.01009.0964.0923.01450.01537.0NANANA1221.0NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue NA360.0147.0183.0277.0247.0133.0145.045.0352.061.0150.051.0125.0338.0142.0238.0201.0164.0103.092.0571.0650.0661.0185.0184.0226.0NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents █▄▂▂▃▃▂▂▁▄▁▂▁▂▃▂▃▂▂▁▁892.0360.0147.0183.0277.0247.0133.0145.045.0352.061.0150.051.0125.0338.0142.0238.0201.0164.0103.092.0NA650.0NANANA226.0NANANA
us-gaap:AccountsReceivableNetCurrent ▅▇▇▇▆█▆▅▆▅▆▅▃▄▄▂▂▂▁▂▁▂▃755.0840.0825.0840.0776.0885.0805.0770.0795.0744.0815.0759.0686.0699.0687.0628.0604.0631.0591.0605.0577.0629.0645.0NANANA702.0NANANA
us-gaap:OtherAssetsCurrent ▄█▅▄▃▃▃▂▂▃▂▁▃▅▃▁▂▂▂▁▁▂▁122.0211.0141.0116.0110.098.090.083.080.098.068.065.0103.0139.097.065.085.077.070.064.059.069.054.0NANANA116.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA29051.0NANANA27255.0NANANA26382.0NANANA24429.0NANANA23814.0NANANA23225.0NANANA20943.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType cp:RollingStockNANA4702.0NANANA4529.0NANANA4467.0NANANA4114.0NANANA4060.0NANANA4041.0NANANA3737.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingNANA937.0NANANA833.0NANANA781.0NANANA719.0NANANA662.0NANANA642.0NANANA571.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ComputerEquipmentNANA569.0NANANA527.0NANANA551.0NANANA551.0NANANA584.0NANANA599.0NANANA631.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:PropertyPlantAndEquipmentOtherTypesNANA2167.0NANANA2067.0NANANA1984.0NANANA1760.0NANANA1691.0NANANA1640.0NANANA1489.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:RailroadTransportationEquipmentNANA20676.0NANANA19299.0NANANA18599.0NANANA17285.0NANANA16817.0NANANA16303.0NANANA14515.0NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA8629.0NANANA8099.0NANANA7964.0NANANA7413.0NANANA7125.0NANANA6952.0NANANA6505.0NANANA
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType cp:RollingStockNANA1498.0NANANA1445.0NANANA1613.0NANANA1557.0NANANA1524.0NANANA1524.0NANANA1414.0NANANA
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingNANA259.0NANANA237.0NANANA218.0NANANA196.0NANANA178.0NANANA165.0NANANA150.0NANANA
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType us-gaap:ComputerEquipmentNANA253.0NANANA215.0NANANA252.0NANANA264.0NANANA299.0NANANA291.0NANANA297.0NANANA
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType us-gaap:PropertyPlantAndEquipmentOtherTypesNANA760.0NANANA680.0NANANA645.0NANANA582.0NANANA551.0NANANA545.0NANANA518.0NANANA
 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType us-gaap:RailroadTransportationEquipmentNANA5859.0NANANA5522.0NANANA5236.0NANANA4814.0NANANA4573.0NANANA4427.0NANANA4126.0NANANA
us-gaap:PropertyPlantAndEquipmentNet ███▇▇▇▆▅▅▄▅▄▃▃▃▂▂▂▂▂▁▁▁20639.020503.020422.020169.020019.019900.019156.018909.018489.018312.018418.017792.017616.017234.017016.016700.016703.016661.016689.016382.016160.016013.016273.0NANANA14438.0NANANA
us-gaap:Goodwill NANA329.0NANANA194.0NANANA194.0NANANA178.0NANANA191.0NANANA198.0NANANA164.0NANANA
 us-gaap:Goodwill us-gaap:BusinessAcquisition cp:DRTPNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA37.0NANANA12.0NANANA8.0NANANA9.0NANANA11.0NANANA13.0NANANA12.0NANANA
us-gaap:IntangibleAssetsNetIncludingGoodwill ███▅▅▂▂▁▁▁▂▁▁▁▁▁▁▁▂▁▁▁▂366.0371.0366.0284.0291.0223.0206.0195.0193.0198.0202.0192.0196.0192.0187.0187.0195.0200.0202.0198.0195.0196.0211.0NANANA176.0NANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA178.0NANANA197.0NANANA213.0NANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA316.0NANANA358.0NANANA0.0NANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingLeaseRightOfUseAsset us-gaap:BalanceSheetLocation us-gaap:OtherAssetsNANA316.0NANANA358.0NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▇▇▇███████▁▁▁▁▁▁▁▁▁▁▁▁▁396.0417.0438.0470.0460.0478.0451.0462.0466.0471.071.068.064.082.069.059.073.078.057.070.070.053.063.0NANANA117.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent █▃▄▃▅▄▆▃▃▃▄▁▂▁▂▁▁▁▃▂▂▁▃1945.01418.01467.01380.01577.01528.01693.01415.01401.01312.01449.01189.01213.01183.01238.01139.01183.01148.01322.01246.01247.01143.01417.0NANANA1277.0NANANA
us-gaap:AccruedLiabilitiesCurrent NANA294.0NANANA348.0NANANA360.0NANANA256.0NANANA282.0NANANA353.0NANANA324.0NANANA
us-gaap:DividendsPayableCurrent NANA127.0NANANA114.0NANANA91.0NANANA82.0NANANA73.0NANANA53.0NANANA58.0NANANA
us-gaap:LiabilitiesCurrent ▇█▆▅▃▃▅▄▃▃▄▃▃▄▄▃▄▁▂▃▂▁▂2817.03200.02653.02221.01668.01794.02292.02090.01674.01808.01955.01669.01760.01939.01984.01888.01945.01179.01347.01637.01445.01166.01447.0NANANA1411.0NANANA
 us-gaap:OperatingLeaseLiabilityCurrent us-gaap:BalanceSheetLocation us-gaap:AccountsPayableAndAccruedLiabilitiesNANA63.0NANANA69.0NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent NANA1.0NANANA12.0NANANA17.0NANANA44.0NANANA50.0NANANA53.0NANANA55.0NANANA
us-gaap:TaxesPayableCurrent NANA115.0NANANA139.0NANANA104.0NANANA72.0NANANA146.0NANANA218.0NANANA95.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:LongTermDebtAndCapitalLeaseObligations ▂▃▄▆▇█▃▄▄▄▃▂▃▂▁▁▂▄▅▄▄▄▅7850.07958.08585.08945.09457.09804.08158.08308.08266.08427.08190.07806.07936.07601.07413.07384.07660.08583.08659.08488.08383.08430.08927.0NANANA5625.0NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ██▆▇▅▄▁▅3724.03731.03666.03689.03644.03604.03501.03635.0NANA3518.0NANANANANANANANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▇██▅▅▆▅▁▁▁▁▃▃▃▃▂▂▂▂▄▃▃▄823.0829.0832.0777.0784.0790.0785.0712.0713.0714.0718.0746.0749.0749.0749.0726.0729.0730.0734.0756.0751.0750.0758.0NANANA755.0NANANA
us-gaap:OtherLiabilitiesNoncurrent ▇▇██▇▇▇███▂▁▁▁▁▁▁▁▂▂▂▃▃525.0537.0585.0576.0544.0541.0562.0579.0598.0598.0237.0232.0218.0205.0231.0221.0222.0227.0284.0280.0286.0291.0318.0NANANA432.0NANANA
 us-gaap:OperatingLeaseLiabilityNoncurrent us-gaap:BalanceSheetLocation us-gaap:OtherNoncurrentLiabilitiesNANA248.0NANANA285.0NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA59.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA53.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA42.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA34.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA88.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:StockholdersEquity █▆▆▆▆▅▅▆▅▅▅▅▅▄▄▃▃▂▂▂▂▃▂▁▃▃▃8965.07866.07319.07579.07465.06955.07069.07215.07157.06814.06636.07128.06574.06434.06437.05565.05333.05038.04626.04669.04691.05290.04796.03992.05251.05418.05610.0NANANA
us-gaap:CommonStockValue ▃▂▁▁▂▂▂▁▂▃▃▄▄▅▅▅▆▆▃▃▃█▇2003.01993.01983.01978.01990.01985.01993.01982.01996.01997.02002.02017.02013.02022.02032.02025.02038.02036.02002.02000.02000.02065.02058.0NANANA2185.0NANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▆▅▆▅▄▃▂▂▂▁▃▂▂▁▁▁▁▄▁▃▃▁63.058.055.056.053.051.048.045.045.046.042.047.045.045.043.042.042.042.052.043.049.048.043.0NANANA36.0NANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▆▆▆▅▅▅▅▄▄▄▄▄▄▂▂▂▁▁▁▂▁9690.08571.08095.07961.07872.07399.07550.07180.07125.06798.06635.06718.06189.06072.06103.05213.04993.04729.04371.04059.04113.04658.04172.0NANANA5608.0NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▁▁▃▃▃▂▅▅▅▅▇▇▇▆▇▆▆▆████-2791.0-2756.0-2814.0-2416.0-2450.0-2480.0-2522.0-1992.0-2009.0-2027.0-2043.0-1654.0-1673.0-1705.0-1741.0-1715.0-1740.0-1769.0-1799.0-1433.0-1471.0-1481.0-1477.0NANANA-2219.0NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:OtherComprehensiveIncomeLocation us-gaap:AccumulatedDefinedBenefitPlansAdjustment▁▁▁▃▃▃▂▅▅▅▅▇▇▆▆▆▆▆▆██-2800.0-2839.0-2878.0-2481.0-2514.0-2547.0-2580.0-2048.0-2063.0-2079.0-2094.0-1699.0-1719.0-1740.0-1761.0-1739.0-1767.0-1794.0-1822.0-1403.0-1438.0NA-1504.0NANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:OtherComprehensiveIncomeLocation us-gaap:AccumulatedGainLossNetCashFlowHedgeParent▁█▆▆▆▆▆▅▅▅▅▅▅-101.0-29.0-48.0-50.0-52.0-52.0-54.0-57.0-58.0-61.0-62.0-64.0-64.0NA-89.0NANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:OtherComprehensiveIncomeLocation us-gaap:AccumulatedTranslationAdjustment▁▂▂▃▄▅▂▃▂▃▃▁▁▁▁▅▇▇██▇110.0112.0112.0115.0116.0119.0112.0113.0112.0113.0113.0109.0110.0109.0109.0119.0124.0125.0127.0126.0124.0NA129.0NANANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▅▄▄▄▅▄▂▂▅▂▁▁▄7.05.04.04.04.05.04.03.03.05.03.02.02.04.0NANANA-3.03.03.02.06.03.04.04.06.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▂▄▂▃▂▄▃▃▂▄▃▃▂▃▂▃▁▃▃▂▁▃▃▂▂1954.0582.0985.0493.0835.0489.01033.0823.0721.0413.0931.0673.0711.0397.0733.0527.0611.0311.0768.0591.0512.0218.0623.0696.0585.0555.0NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▆▁▄▄▅▂▄▄▇▅▅▅▇▅▆▆▇▇▇▆▇▅█▆█-405.0-286.0-717.0-483.0-468.0-362.0-668.0-461.0-455.0-219.0-389.0-423.0-408.0-238.0-434.0-306.0-333.0-222.0-252.0-278.0-321.0-218.0-415.0-163.0-354.0-191.0NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▇▆▇▅▇▅▆▄█▃▆▅▅▇▅▆▇▅▅▃▇▆▇▆▅-1016.0-80.0-298.0-100.0-322.0-44.0-374.0-263.0-572.098.0-638.0-146.0-381.0-377.0-103.0-310.0-237.0-50.0-458.0-304.0-669.0-62.0-241.0-75.0-229.0-412.0NANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect █▅▃▃▄▅▃▄▁▆▃▄▃▂▅▃▄▄▄▄532.0213.0-36.0-94.030.0114.0-12.0100.0-307.0291.0-89.099.0-74.0-213.0196.0-96.037.037.061.011.0NANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▆▇▇▇▇▇▇█▆▇█▇▇▇▁▇▇▇▇▇▇██▆▇▇9.051.088.045.049.039.065.096.0-18.038.0101.077.037.041.0-378.077.024.067.087.050.090.093.0128.00.074.032.0NANANANA
us-gaap:DepreciationDepletionAndAmortization ██▇▇▇▇▅▆▆▃▅▅▄▄▄▃▃▄▃▂▃▃▂▁▁▁200.0202.0197.0195.0195.0192.0178.0185.0183.0160.0180.0174.0172.0170.0168.0162.0165.0166.0162.0155.0161.0162.0155.0149.0145.0146.0NANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities █▂▄▂▃▂▄▃▃▂▄▃▃▂▃▂▃▁▃▃▂▁▃▃▂▂1954.0582.0985.0493.0835.0489.01033.0823.0721.0413.0931.0673.0711.0397.0733.0527.0611.0311.0768.0591.0512.0218.0623.0696.0585.0555.0NANANANA
us-gaap:NetIncomeLoss █▃▅▃▄▂▄▄▄▂▃▄▂▂▆▃▃▂▂▂▂▃▁▁▂▁▂▂▂▁1246.0602.0802.0598.0635.0409.0664.0618.0724.0434.0545.0622.0436.0348.0984.0510.0480.0431.0384.0347.0328.0540.0319.0323.0390.0320.0451.0400.0371.0254.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▆▁▄▄▅▂▄▄▇▅▅▅▇▅▆▆▇▇▇▆▇▅█▆█-405.0-286.0-717.0-483.0-468.0-362.0-668.0-461.0-455.0-219.0-389.0-423.0-408.0-238.0-434.0-306.0-333.0-222.0-252.0-278.0-321.0-218.0-415.0-163.0-354.0-191.0NANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▆▃▄██▄█▇▇▁▇▆▆▁▇▃▄▁▂▃▄▂▇▇▄▂416.0323.0330.0484.0502.0355.0500.0464.0459.0224.0467.0430.0413.0241.0445.0319.0346.0230.0280.0294.0330.0278.0455.0449.0355.0263.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▇▆▇▅▇▅▆▄█▃▆▅▅▇▅▆▇▅▅▃▇▆▇▆▅-1016.0-80.0-298.0-100.0-322.0-44.0-374.0-263.0-572.098.0-638.0-146.0-381.0-377.0-103.0-310.0-237.0-50.0-458.0-304.0-669.0-62.0-241.0-75.0-229.0-412.0NANANANA
us-gaap:PaymentsOfDividendsCommonStock ███▇▇▇▇▇▅▅▅▅▄▄▄▄▃▃▃▃▁▁▁▁▁▁126.0127.0128.0113.0112.0114.0114.0116.091.091.093.092.081.082.081.083.073.073.073.075.053.054.054.057.057.058.0NANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock NANA564.0400.044.0501.0170.0500.0257.0207.0544.00.0261.0298.013.0226.0142.00.010.0412.0788.00.0192.01523.0543.0529.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType cp:A305030YearNotesNANA3.05e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value200319931983197819901985199319821996199720022017201320222032202520382036200220002000206520582185
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.18.38.48.38.48.58.98.89.19.19.49.69.710.010.110.410.410.510.410.310.510.710.513.2

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value133137140144146153166175173
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value666133133134135135137137139139140142142143144145146146146146148153153153161164166
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value669133135136137138140140143143144145146147148152153158165166
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value666133135135136138139140142142144145146146147151153157163164
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption


Antidilutive
Period End2021-06-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value0200000.0100000.000200000.0300000.0100000.0200000.0255930.0269860.0502000.0331550.0440010.0445990.0364010.0175070.0883.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount0.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1.874.525.974.424.682.994.844.475.193.13.844.363.052.416.793.53.282.942.632.352.163.532.092.052.381.942.662.332.131.45
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1.864.55.954.414.662.984.824.465.173.093.834.353.042.416.773.53.272.932.612.342.153.512.082.042.361.922.632.312.111.44
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2524605643114515393415281814191117-12.05.0311.01421215.029
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.23.03.02.40.52.20.82.01.90.71.51.00.81.10.71.0-0.80.32.00.10.91.21.20.31.7

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value121166040463266545113463574245015664146838495853550946118385338536955343464332
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax59.534.020.134.237.422.26.532.337.825.77.834.127.023.355.933.831.329.01.124.823.333.756.620.128.119.9

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-06-302020-03-31
Value1234117910221209
Percentage of CostsAndExpenses100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax60.760.757.559.6

Gain Loss On Investments

us-gaap:GainLossOnInvestments us-gaap:BusinessAcquisition

us-gaap:GainLossOnInvestments

cp:DRTP


Gain
Period End2020-12-22
Value68
Percentage of GainLossOnInvestments100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:DRTP0.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1503793997787824594896829848573739821558
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax73.940.849.642.646.429.343.342.243.232.736.843.632.2

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-09-30
Value257191195189189185232211124139194199122122-363.0170138148143123117170137159231347.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.69.89.710.210.69.111.210.76.37.99.710.67.07.4-21.210.88.59.38.77.98.110.78.19.31.48.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1391331273115.01391271221081498874521046178116170481765192694862-3.0
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.86.86.316.80.36.96.16.25.58.54.43.93.06.33.64.97.110.72.91.14.512.14.12.83.8-0.2

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value571556016363157711418314983147
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.88.03.08.83.57.73.47.24.28.54.17.8

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1246602802598635409664618724434545622436348984510480431384347328540319323390320451400371254
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.331.039.932.435.720.232.131.536.924.827.233.025.121.157.432.329.527.123.522.322.633.918.918.923.619.225.624.022.116.8

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1246602802598635409664618724434545622436348984510480431384347328540319323390320
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.331.039.932.435.720.232.131.536.924.827.233.025.121.157.432.329.527.123.522.322.633.918.918.923.619.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value10841022120911791110115512241132110811231122960905964932920897899938101095610051053
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax58.757.559.657.056.558.969.956.458.964.868.156.057.259.358.656.257.762.059.059.955.960.963.2

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value820780928779770834890869822543874790627540753690679671717657551653677753646612708621587423
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax40.340.246.142.243.341.143.044.241.931.043.642.036.232.844.043.641.742.243.842.338.041.040.144.139.136.840.237.234.928.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-35.058-398.0343042-530.0171816-389.0193236-26.0252930-366.03810.0-4.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.73.0-19.81.81.72.1-25.60.90.90.9-19.41.01.82.2-1.51.61.81.9-22.42.40.7-0.3

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:OtherComprehensiveIncomeLocation

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value3939-397.0333333-532.0151615-395.0202121-22.0282728-419.035
Percentage of OtherComprehensiveIncomeLossNetOfTax-111.467.299.797.1110.078.6100.488.288.993.8101.5105.365.658.384.6112.093.193.3114.592.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.92.0-19.71.81.91.6-25.70.80.80.9-19.71.11.21.3-1.31.81.71.8-25.62.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-72.0192.02.00.02.03.01.03.01.02.00.0
Percentage of OtherComprehensiveIncomeLossNetOfTax205.732.8-0.55.90.04.8-0.65.916.76.2-0.50.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.51.00.10.10.00.10.10.10.20.10.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-2.0-1.0-3.07.0-1.01.0-1.00.04.0-1.01.00.0-10.0-5.0-1.0-2.01.02.0
Percentage of OtherComprehensiveIncomeLossNetOfTax5.7-2.9-10.016.70.25.9-5.60.0-1.0-5.33.10.038.5-20.0-3.4-6.7-0.35.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.1-0.20.3-0.00.1-0.10.00.2-0.10.10.0-0.6-0.3-0.1-0.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-157.028963686-1.0-6.0-2.0-1.0-1.0-4.08.0-4.0-3.0-4.0-3.0-3.0-1.00.02.0-9.0-7.0-4.0-3.0-5.0-3.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.71.44.81.94.8-0.0-0.3-0.1-0.1-0.1-0.20.4-0.2-0.2-0.2-0.2-0.2-0.10.00.1-0.6-0.4-0.2-0.2-0.3-0.2

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value203419422012184817772029206919641961175220061882173416481713158116271591163715541450159116871709165116651760167016811509
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

cp:Automotive


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value98108109943487858710476758591
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.85.65.45.11.94.34.14.45.34.33.74.55.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.85.65.45.11.94.34.14.45.34.33.74.55.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:Automotive100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:CoalRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value170163155130131150168183173158187171164
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.48.47.77.07.47.48.19.38.89.09.39.19.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.48.47.77.07.47.48.19.38.89.09.39.19.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:CoalRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:EnergyChemicalsandPlasticRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value369388366321341491491382346315369339278
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.120.018.217.419.224.223.719.517.618.018.418.016.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.120.018.217.419.224.223.719.517.618.018.418.016.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:EnergyChemicalsandPlasticRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:FertilizerandSulphurRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value78777865777064666357725555
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.84.03.93.54.33.43.13.43.23.33.62.93.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.84.03.93.54.33.43.13.43.23.33.62.93.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:FertilizerandSulphurRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:ForestProductsRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value90808485817875787873737669
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.44.14.24.64.63.83.64.04.04.23.64.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.44.14.24.64.63.83.64.04.04.23.64.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:ForestProductsRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:GrainRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value444448508457446418473409422380453384372
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.823.125.224.725.120.622.920.821.521.722.620.421.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.823.125.224.725.120.622.920.821.521.722.620.421.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:GrainRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:Intermodal


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value445394410385363405400409404380405406360
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.920.320.420.820.420.019.320.820.621.720.221.620.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.920.320.420.820.420.019.320.820.621.720.221.620.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:Intermodal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:MetalsMineralsandConsumerProductsRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value180159155152133189173201205173202208204
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.88.27.78.27.59.38.410.210.59.910.111.111.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.88.27.78.27.59.38.410.210.59.910.111.111.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:MetalsMineralsandConsumerProductsRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:Nonfreightexcludingleasingrevenues


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value26242727252927323026
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.21.31.51.41.41.31.61.51.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.21.31.51.41.41.31.61.51.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:Nonfreightexcludingleasingrevenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:PotashRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value13410110313214611295117136114128130116
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.65.25.17.18.25.54.66.06.96.56.46.96.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.65.25.17.18.25.54.66.06.96.56.46.96.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:PotashRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CargoAndFreight


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2008191819681821175220002024193219311726196418541709162516671547
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.798.897.898.598.698.697.898.498.598.597.998.598.698.697.397.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.798.897.898.598.698.697.898.498.598.597.998.598.698.697.397.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CargoAndFreight100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value205419592012186317922043206919791977176720061898175016621713159516431603163715541450159116871709165116651760167016811509
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax101.0100.9100.0100.8100.8100.7100.0100.8100.8100.9100.0100.9100.9100.8100.0100.9101.0100.8100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ProductOrService

cp:NonFreight


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value46414442404345474641424441374648
Percentage of Revenues2.22.12.22.32.22.12.22.42.32.32.12.32.32.22.73.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.12.22.32.32.12.22.42.32.32.12.32.42.22.73.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax cp:NonFreight0.00.00.00.00.00.00.0146.9153.30.00.0157.1164.00.00.00.0

us-gaap:CargoAndFreight


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2008191819681821175220002024193219311726196418541709162516671547
Percentage of Revenues97.897.997.897.797.897.997.897.697.797.797.997.797.797.897.397.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.798.897.898.598.698.697.898.498.598.597.998.598.698.697.397.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CargoAndFreight100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value247042412123640237872356223488223672253921933219102125421109206852031820135194791953719397192211942119068193491963716550
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value157391625516321162081609716533152981532414776150961461813981141111388413698139141420414359145951475214377140591484110940
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets63.767.469.068.168.370.468.468.067.468.968.866.268.268.368.071.472.774.075.976.075.472.775.666.1

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value247042412123640237872356223488223672253921933219102125421109206852031820135194791953719397192211942119068193491963716550
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value89657866731975797465695570697215715768146636712865746434643755655333503846264669469152904796399252515418561070975097
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.332.631.031.931.729.631.632.032.631.131.233.831.831.732.028.627.326.024.124.024.627.324.40.00.00.033.90.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value-2791.0-2756.0-2814.0-2416.0-2450.0-2480.0-2522.0-1992.0-2009.0-2027.0-2043.0-1654.0-1673.0-1705.0-1741.0-1715.0-1740.0-1769.0-1799.0-1433.0-1471.0-1481.0-1477.0-2113.0-2133.0-2207.0-2219.0-1503.0-2768.0
Percentage of StockholdersEquity-31.1-35.0-38.4-31.9-32.8-35.7-35.7-27.6-28.1-29.7-30.8-23.2-25.4-26.5-27.0-30.8-32.6-35.1-38.9-30.7-31.4-28.0-30.8-52.9-40.6-40.7-39.6-21.2-54.3
Percentage of Assets-11.3-11.4-11.9-10.2-10.4-10.6-11.3-8.8-9.2-9.3-9.6-7.8-8.1-8.4-8.6-8.8-8.9-9.1-9.4-7.4-7.7-7.7-7.50.00.00.0-13.40.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value6358555653514845454642474545434242425243494843424038363441
Percentage of StockholdersEquity0.70.70.80.70.70.70.70.60.60.70.60.70.70.70.70.80.80.81.10.91.00.90.91.10.80.70.60.50.8
Percentage of Assets0.30.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.20.30.20.20.00.00.00.20.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value20031993198319781990198519931982199619972002201720132022203220252038203620022000200020652058205421512177218522402127
Percentage of StockholdersEquity22.325.327.126.126.728.528.227.527.929.330.228.330.631.431.636.438.240.443.342.842.639.042.951.541.040.238.931.641.7
Percentage of Assets8.18.38.48.38.48.58.98.89.19.19.49.69.710.010.110.410.410.510.410.310.510.710.50.00.00.013.20.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value96908571809579617872739975507180712567986635671861896072610352134993472943714059411346584172400951935410560863265697
Percentage of StockholdersEquity108.1109.0110.6105.0105.5106.4106.899.599.699.8100.094.294.194.494.893.793.693.994.586.987.788.187.0100.498.999.9100.089.1111.8
Percentage of Assets39.235.534.233.533.431.533.831.932.531.031.231.829.929.930.326.825.624.422.720.921.624.121.20.00.00.033.90.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value198716241321132413551407121011861115137611171130100011171274992111911101009964923145015371221
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.06.75.65.65.86.05.45.35.16.35.35.44.85.56.35.15.75.75.25.04.87.57.87.4

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value36014718327724713314545352611505112533814223820116410392571650661185184226476333
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.50.60.81.21.10.60.60.21.60.30.70.20.61.70.71.21.00.90.50.53.03.30.00.00.01.40.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-31
Value89236014718327724713314545352611505112533814223820116410392650226
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.61.50.60.81.21.10.60.60.21.60.30.70.20.61.70.71.21.00.90.50.53.31.4

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value755840825840776885805770795744815759686699687628604631591605577629645702
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.13.53.53.53.33.83.63.43.63.43.83.63.33.43.43.23.13.33.13.13.03.33.34.2

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value12221114111611098908380986865103139976585777064596954116
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.90.60.50.50.40.40.40.40.40.30.30.50.70.50.30.40.40.40.30.30.40.30.7

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value29051272552638224429238142322520943
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets122.9121.9124.1121.3123.9118.3126.5

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

cp:RollingStock


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value4702452944674114406040413737
Percentage of PropertyPlantAndEquipmentGross16.216.616.916.817.017.417.8
Percentage of Assets19.920.221.020.421.120.622.6
Percentage of Assets cp:RollingStock0.00.00.00.00.00.00.0

us-gaap:Building


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value937833781719662642571
Percentage of PropertyPlantAndEquipmentGross3.23.13.02.92.82.82.7
Percentage of Assets4.03.73.73.63.43.33.5
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.0

us-gaap:ComputerEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value569527551551584599631
Percentage of PropertyPlantAndEquipmentGross2.01.92.12.32.52.63.0
Percentage of Assets2.42.42.62.73.03.13.8
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentOtherTypes


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2167206719841760169116401489
Percentage of PropertyPlantAndEquipmentGross7.57.67.57.27.17.17.1
Percentage of Assets9.29.29.38.78.88.49.0
Percentage of Assets us-gaap:PropertyPlantAndEquipmentOtherTypes0.00.00.00.00.00.00.0

us-gaap:RailroadTransportationEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value20676192991859917285168171630314515
Percentage of PropertyPlantAndEquipmentGross71.270.870.570.870.670.269.3
Percentage of Assets87.586.387.585.887.583.087.7
Percentage of Assets us-gaap:RailroadTransportationEquipment0.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value8629809979647413712569526505
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.536.237.536.837.135.439.3

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType

cp:RollingStock


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1498144516131557152415241414
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment17.417.820.321.021.421.921.7
Percentage of Assets6.36.57.67.77.97.88.5
Percentage of Assets cp:RollingStock0.00.00.00.00.00.00.0

us-gaap:Building


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value259237218196178165150
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment3.02.92.72.62.52.42.3
Percentage of Assets1.11.11.01.00.90.80.9
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.0

us-gaap:ComputerEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value253215252264299291297
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment2.92.73.23.64.24.24.6
Percentage of Assets1.11.01.21.31.61.51.8
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentOtherTypes


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value760680645582551545518
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment8.88.48.17.97.77.88.0
Percentage of Assets3.23.03.02.92.92.83.1
Percentage of Assets us-gaap:PropertyPlantAndEquipmentOtherTypes0.00.00.00.00.00.00.0

us-gaap:RailroadTransportationEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value5859552252364814457344274126
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment67.968.265.764.964.263.763.4
Percentage of Assets24.824.724.623.923.822.524.9
Percentage of Assets us-gaap:RailroadTransportationEquipment0.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value206392050320422201692001919900191561890918489183121841817792176161723417016167001670316661166891638216160160131627314438
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets83.585.086.484.885.084.785.683.984.383.686.784.385.284.884.585.785.585.986.884.484.782.882.987.2

us-gaap:PropertyPlantAndEquipmentNet us-gaap:PropertyPlantAndEquipmentByType

cp:RollingStock


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3204308428542557253625172323
Percentage of PropertyPlantAndEquipmentNet15.716.115.515.015.215.516.1
Percentage of Assets13.613.813.412.713.212.814.0
Percentage of Assets cp:RollingStock0.00.00.00.00.00.00.0

us-gaap:Building


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value678596563523484477421
Percentage of PropertyPlantAndEquipmentNet3.33.13.13.12.92.92.9
Percentage of Assets2.92.72.62.62.52.42.5
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.0

us-gaap:ComputerEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value316312299287285308334
Percentage of PropertyPlantAndEquipmentNet1.51.61.61.71.71.92.3
Percentage of Assets1.31.41.41.41.51.62.0
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentOtherTypes


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value140713871339117811401095971
Percentage of PropertyPlantAndEquipmentNet6.97.27.36.96.86.76.7
Percentage of Assets6.06.26.35.95.95.65.9
Percentage of Assets us-gaap:PropertyPlantAndEquipmentOtherTypes0.00.00.00.00.00.00.0

us-gaap:RailroadTransportationEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value14817137771336312471122441187610389
Percentage of PropertyPlantAndEquipmentNet72.671.972.673.373.473.072.0
Percentage of Assets62.761.662.961.963.760.562.8
Percentage of Assets us-gaap:RailroadTransportationEquipment0.00.00.00.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value329194194178191198164150
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.40.90.90.91.01.01.00.0

us-gaap:Goodwill us-gaap:BusinessAcquisition

cp:DRTP


Goodwillus-gaap:
Period End2020-12-22
Value90
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets cp:DRTP0.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value37128.09.011131212
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.10.00.00.10.10.10.0

Intangible Assets Net Including Goodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value366371366284291223206195193198202192196192187187195200202198195196211176162
Percentage of IntangibleAssetsNetIncludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.51.51.21.20.90.90.90.90.91.00.90.90.90.91.01.01.01.11.01.01.01.11.10.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-31
Value178197213
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0
Percentage of Assets0.80.91.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-312018-12-31
Value3163580.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.00.0
Percentage of Assets1.31.60.0

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:BalanceSheetLocation

us-gaap:OtherAssets


Operating
Period End2020-12-312019-12-31
Value316358
Percentage of OperatingLeaseRightOfUseAsset100.0100.0
Percentage of Assets1.31.6
Percentage of Assets us-gaap:OtherAssets0.00.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value39641743847046047845146246647171686482695973785770705363117
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.71.92.02.02.02.02.02.12.10.30.30.30.40.30.30.40.40.30.40.40.30.30.7

Accounts Payable And Accrued Liabilities Current

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value194514181467138015771528169314151401131214491189121311831238113911831148132212461247114314171277
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.95.96.25.86.76.57.66.36.46.06.85.65.95.86.15.86.15.96.96.46.55.97.27.7

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value294348360256282353324
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.61.71.31.51.82.0

Dividends Payable Current

us-gaap:DividendsPayableCurrent

us-gaap:DividendsPayableCurrent


Dividends
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1271149182735358
Percentage of DividendsPayableCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.40.40.40.30.4

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value281732002653222116681794229220901674180819551669176019391984188819451179134716371445116614471411
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.413.311.29.37.17.610.29.37.68.39.27.98.59.59.99.710.06.17.08.47.66.07.48.5

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:AccountsPayableAndAccruedLiabilities


Operating
Period End2020-12-312019-12-31
Value6369
Percentage of OperatingLeaseLiabilityCurrent100.0100.0
Percentage of Assets0.30.3
Percentage of Assets us-gaap:AccountsPayableAndAccruedLiabilities0.00.0

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1.0121744505355
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.10.10.20.30.30.3

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1151391047214621895
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.60.50.40.81.10.6

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value785079588585894594579804815883088266842781907806793676017413738476608583865984888383843089275625
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.833.036.337.640.141.736.536.937.738.538.537.038.437.436.837.939.244.245.043.744.043.645.534.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-01-012018-12-31
Value3724373136663689364436043501363535153518
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.115.515.515.515.515.315.716.10.016.6

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value823829832777784790785712713714718746749749749726729730734756751750758755
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.33.43.53.33.33.43.53.23.33.33.43.53.63.73.73.73.73.83.83.93.93.93.94.6

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value515502463481471
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent61.963.964.564.264.2
Percentage of Assets2.22.22.22.42.5
Percentage of Assets us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value317283255268263
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent38.136.135.535.835.8
Percentage of Assets1.31.31.21.31.4
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value525537585576544541562579598598237232218205231221222227284280286291318432
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.22.52.42.32.32.52.62.72.71.11.11.11.01.11.11.11.21.51.41.51.51.62.6

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OtherNoncurrentLiabilities


Operating
Period End2020-12-312019-12-31
Value248285
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0
Percentage of Assets1.01.3
Percentage of Assets us-gaap:OtherNoncurrentLiabilities0.00.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value59
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.2

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value53
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.2

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value42
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.2

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value34
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value88
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.4

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-31
Value311
Percentage of OperatingLeaseLiability100.0
Percentage of Assets1.3

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value347
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets1.5

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value36
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.2

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value89657866731975797465695570697215715768146636712865746434643755655333503846264669469152904796399252515418561070975097
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.332.631.031.931.729.631.632.032.631.131.233.831.831.732.028.627.326.024.124.024.627.324.40.00.00.033.90.00.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value-2791.0-2756.0-2814.0-2416.0-2450.0-2480.0-2522.0-1992.0-2009.0-2027.0-2043.0-1654.0-1673.0-1705.0-1741.0-1715.0-1740.0-1769.0-1799.0-1433.0-1471.0-1481.0-1477.0-2113.0-2133.0-2207.0-2219.0-1503.0-2768.0
Percentage of StockholdersEquity-31.1-35.0-38.4-31.9-32.8-35.7-35.7-27.6-28.1-29.7-30.8-23.2-25.4-26.5-27.0-30.8-32.6-35.1-38.9-30.7-31.4-28.0-30.8-52.9-40.6-40.7-39.6-21.2-54.3
Percentage of Assets-11.3-11.4-11.9-10.2-10.4-10.6-11.3-8.8-9.2-9.3-9.6-7.8-8.1-8.4-8.6-8.8-8.9-9.1-9.4-7.4-7.7-7.7-7.50.00.00.0-13.40.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value6358555653514845454642474545434242425243494843424038363441
Percentage of StockholdersEquity0.70.70.80.70.70.70.70.60.60.70.60.70.70.70.70.80.80.81.10.91.00.90.91.10.80.70.60.50.8
Percentage of Assets0.30.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.20.30.20.20.00.00.00.20.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value20031993198319781990198519931982199619972002201720132022203220252038203620022000200020652058205421512177218522402127
Percentage of StockholdersEquity22.325.327.126.126.728.528.227.527.929.330.228.330.631.431.636.438.240.443.342.842.639.042.951.541.040.238.931.641.7
Percentage of Assets8.18.38.48.38.48.58.98.89.19.19.49.69.710.010.110.410.410.510.410.310.510.710.50.00.00.013.20.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value96908571809579617872739975507180712567986635671861896072610352134993472943714059411346584172400951935410560863265697
Percentage of StockholdersEquity108.1109.0110.6105.0105.5106.4106.899.599.699.8100.094.294.194.494.893.793.693.994.586.987.788.187.0100.498.999.9100.089.1111.8
Percentage of Assets39.235.534.233.533.431.533.831.932.531.031.231.829.929.930.326.825.624.422.720.921.624.121.20.00.00.033.90.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value200319931983197819901985199319821996199720022017201320222032202520382036200220002000206520582185
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.18.38.48.38.48.58.98.89.19.19.49.69.710.010.110.410.410.510.410.310.510.710.513.2

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value635855565351484545464247454543424242524349484336
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.20.30.20.20.2

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value969085718095796178727399755071807125679866356718618960726103521349934729437140594113465841725608
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets39.235.534.233.533.431.533.831.932.531.031.231.829.929.930.326.825.624.422.720.921.624.121.233.9

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value-2791.0-2756.0-2814.0-2416.0-2450.0-2480.0-2522.0-1992.0-2009.0-2027.0-2043.0-1654.0-1673.0-1705.0-1741.0-1715.0-1740.0-1769.0-1799.0-1433.0-1471.0-1481.0-1477.0-2219.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-11.3-11.4-11.9-10.2-10.4-10.6-11.3-8.8-9.2-9.3-9.6-7.8-8.1-8.4-8.6-8.8-8.9-9.1-9.4-7.4-7.7-7.7-7.5-13.4

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:OtherComprehensiveIncomeLocation

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-2800.0-2839.0-2878.0-2481.0-2514.0-2547.0-2580.0-2048.0-2063.0-2079.0-2094.0-1699.0-1719.0-1740.0-1761.0-1739.0-1767.0-1794.0-1822.0-1403.0-1438.0-1504.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.3103.0102.3102.7102.6102.7102.3102.8102.7102.6102.5102.7102.7102.1101.1101.4101.6101.4101.397.997.8101.8
Percentage of Assets-11.3-11.8-12.2-10.4-10.7-10.8-11.5-9.1-9.4-9.5-9.9-8.0-8.3-8.6-8.7-8.9-9.0-9.2-9.5-7.2-7.5-7.7
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-101.0-29.0-48.0-50.0-52.0-52.0-54.0-57.0-58.0-61.0-62.0-64.0-64.0-89.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax3.61.11.72.12.12.12.12.92.93.03.03.93.85.1
Percentage of Assets-0.4-0.1-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.3-0.3-0.4
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value110112112115116119112113112113113109110109109119124125127126124129
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-3.9-4.1-4.0-4.8-4.7-4.8-4.4-5.7-5.6-5.6-5.5-6.6-6.6-6.4-6.3-6.9-7.1-7.1-7.1-8.8-8.4-8.7
Percentage of Assets0.40.50.50.50.50.50.50.50.50.50.50.50.50.50.50.60.60.60.70.60.70.7
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value7.05.04.04.04.05.04.03.03.05.03.02.02.04.0-3.03.03.02.06.03.04.04.06.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value7.05.04.04.04.05.04.03.03.05.03.02.02.04.0-3.03.03.02.06.03.04.04.06.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value19545829854938354891033823721413931673711397733527611311768591512218623696585555
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax96.130.049.026.747.024.149.941.936.823.646.435.841.024.142.833.337.619.546.938.035.313.736.940.735.433.3

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-405.0-286.0-717.0-483.0-468.0-362.0-668.0-461.0-455.0-219.0-389.0-423.0-408.0-238.0-434.0-306.0-333.0-222.0-252.0-278.0-321.0-218.0-415.0-163.0-354.0-191.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-19.9-14.7-35.6-26.1-26.3-17.8-32.3-23.5-23.2-12.5-19.4-22.5-23.5-14.4-25.3-19.4-20.5-14.0-15.4-17.9-22.1-13.7-24.6-9.5-21.4-11.5

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1016.0-80.0-298.0-100.0-322.0-44.0-374.0-263.0-572.098-638.0-146.0-381.0-377.0-103.0-310.0-237.0-50.0-458.0-304.0-669.0-62.0-241.0-75.0-229.0-412.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-50.0-4.1-14.8-5.4-18.1-2.2-18.1-13.4-29.25.6-31.8-7.8-22.0-22.9-6.0-19.6-14.6-3.1-28.0-19.6-46.1-3.9-14.3-4.4-13.9-24.7

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value532213-36.0-94.030114-12.0100-307.0291-89.099-74.0-213.0196-96.037376111
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.211.0-1.8-5.11.75.6-0.65.1-15.716.6-4.45.3-4.3-12.911.4-6.12.32.33.70.7

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value9.051884549396596-18.038101773741-378.0772467875090931280.07432
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value200202197195195192178185183160180174172170168162165166162155161162155149145146
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value19545829854938354891033823721413931673711397733527611311768591512218623696585555
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax96.130.049.026.747.024.149.941.936.823.646.435.841.024.142.833.337.619.546.938.035.313.736.940.735.433.3

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1246602802598635409664618724434545622436348984510480431384347328540319323390320451400371254
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.331.039.932.435.720.232.131.536.924.827.233.025.121.157.432.329.527.123.522.322.633.918.918.923.619.225.624.022.116.8

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1246602802598635409664618724434545622436348984510480431384347328540319323390320
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax61.331.039.932.435.720.232.131.536.924.827.233.025.121.157.432.329.527.123.522.322.633.918.918.923.619.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-405.0-286.0-717.0-483.0-468.0-362.0-668.0-461.0-455.0-219.0-389.0-423.0-408.0-238.0-434.0-306.0-333.0-222.0-252.0-278.0-321.0-218.0-415.0-163.0-354.0-191.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-19.9-14.7-35.6-26.1-26.3-17.8-32.3-23.5-23.2-12.5-19.4-22.5-23.5-14.4-25.3-19.4-20.5-14.0-15.4-17.9-22.1-13.7-24.6-9.5-21.4-11.5

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value416323330484502355500464459224467430413241445319346230280294330278455449355263
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1016.0-80.0-298.0-100.0-322.0-44.0-374.0-263.0-572.098-638.0-146.0-381.0-377.0-103.0-310.0-237.0-50.0-458.0-304.0-669.0-62.0-241.0-75.0-229.0-412.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-50.0-4.1-14.8-5.4-18.1-2.2-18.1-13.4-29.25.6-31.8-7.8-22.0-22.9-6.0-19.6-14.6-3.1-28.0-19.6-46.1-3.9-14.3-4.4-13.9-24.7

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value126127128113112114114116919193928182818373737375535454575758
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value564400445011705002572075440.0261298132261420.010.04127880.01921523543529
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateStatedPercentage

cp:A305030YearNotes


Debt
Period End2020-12-31
Value3.05
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations cp:A305030YearNotes0.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value17.124.0523.970.22980.3110.25430.14630.24240.24230.21880.25920.24950.22310.2560.26230.2640.2390.32920.3130.295
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value225.2199.12176.02150.64
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312015-12-312014-12-31
Value36663501351833912717
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value555213131315171619
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0

Litigation Reserve Current

us-gaap:LitigationReserveCurrent

us-gaap:LitigationReserveCurrent


Litigation
Period End2020-12-312019-12-312018-12-312017-12-31
Value37556828
Percentage of LitigationReserveCurrent100.0100.0100.0100.0

cp:AmountofFundtobeDistributed us-gaap:LitigationCase, us-gaap:LossContingenciesByNatureOfContingency

cp:AmountofFundtobeDistributed

cp:LacMeganticRailAccident, cp:ClaimedLossorDamagesDuetoDerailment


Amountof
Period End2021-06-302021-03-312020-12-31
Value0.04400.0
Percentage of AmountofFundtobeDistributed0.0100.00.0

cp:BusinessCombinationAcquisitionRelatedCostsOtherIncomeExpense

cp:BusinessCombinationAcquisitionRelatedCostsOtherIncomeExpense


Business
Period End2021-06-302021-03-31
Value2093.0
Percentage of BusinessCombinationAcquisitionRelatedCostsOtherIncomeExpense100.0100.0

cp:ContractwithCustomersLiabilityIncreaseDueToCashReceived

cp:ContractwithCustomersLiabilityIncreaseDueToCashReceived


Contractwith
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value150647.05.04.03.0764.04.073
Percentage of ContractwithCustomersLiabilityIncreaseDueToCashReceived100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:EffectiveIncomeTaxRateReconciliationEstimatedRateExcludingDiscreteItemsPercent

cp:EffectiveIncomeTaxRateReconciliationEstimatedRateExcludingDiscreteItemsPercent


Effective
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value24.624.625.00.250.250.25110.25750.25750.24750.24750.24750.2650.2650.2650.25170.26930.2750.2750.2750.275
Percentage of EffectiveIncomeTaxRateReconciliationEstimatedRateExcludingDiscreteItemsPercent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:EquipmentRents

cp:EquipmentRents


Equipment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-03-31
Value2833343933363533343531333333343537364143444542
Percentage of EquipmentRents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:Foreignexchangegainlossondebtandleaseliabilities

cp:Foreignexchangegainlossondebtandleaseliabilities


Foreignexchangegainlossondebtandleaseliabilities
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-52.0-33.0-103.0-40.0-86.0215-37.025-37.045113-38.044-49.0
Percentage of Foreignexchangegainlossondebtandleaseliabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:GainLossOnDisposalOfPropertiesAfterTax us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

cp:GainLossOnDisposalOfPropertiesAfterTax

cp:ChicagoPropertyAndEasements


Gain
Period End2021-03-31
Value38
Percentage of GainLossOnDisposalOfPropertiesAfterTax100.0

cp:GainLossOnSaleOfPropertiesAfterTax us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

cp:GainLossOnSaleOfPropertiesAfterTax

cp:ChicagoPropertyAndEasements


Gain
Period End2021-03-31
Value38
Percentage of GainLossOnSaleOfPropertiesAfterTax100.0

cp:LossContingencyDamagesSoughtPreviouslyValue us-gaap:CounterpartyName, us-gaap:LitigationCase

cp:LossContingencyDamagesSoughtPreviouslyValue

cp:QuebecAttorneyGeneral, cp:LacMeganticRailAccident


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.04090.00.00.04090.00.0
Percentage of LossContingencyDamagesSoughtPreviouslyValue0.0100.00.00.00.0100.00.00.0

cp:LossContingencyDamagesSoughtPreviouslyValue us-gaap:CounterpartyName, us-gaap:LitigationCase, us-gaap:LossContingenciesByNatureOfContingency

cp:InitialInsurerClaimants, cp:LacMeganticRailAccident, cp:SubrogatedInsuranceClaim


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.0160.00.00.0160.00.0
Percentage of LossContingencyDamagesSoughtPreviouslyValue0.03.90.00.00.03.90.00.0

cp:NetCashAcquiredinBusinessCombination

cp:NetCashAcquiredinBusinessCombination


Net
Period End2020-09-302020-06-302019-06-30
Value0.0190.0
Percentage of NetCashAcquiredinBusinessCombination0.0100.00.0

cp:NetInvestmentHedgeGainLossOnDerivativeNet us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

cp:NetInvestmentHedgeGainLossOnDerivativeNet

us-gaap:NetInvestmentHedging


Net
Period End2021-03-312020-03-31
Value76-555.0
Percentage of NetInvestmentHedgeGainLossOnDerivativeNet100.0100.0

cp:NetInvestmentHedgeGainLossOnDesignatedDebtNet us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

cp:NetInvestmentHedgeGainLossOnDesignatedDebtNet

us-gaap:NetInvestmentHedging


Net
Period End2021-06-302020-06-30
Value86264
Percentage of NetInvestmentHedgeGainLossOnDesignatedDebtNet100.0100.0

cp:OtherincomeexpenseOther

cp:OtherincomeexpenseOther


Otherincomeexpense
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value3000000.01000000.06000000.02000000.0-1000000.01000000.06000000.02000000.01000000.0
Percentage of OtherincomeexpenseOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:ProceedsFromPropertiesAndEasements us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

cp:ProceedsFromPropertiesAndEasements

cp:ChicagoPropertyAndEasements


Proceeds
Period End2021-03-31
Value61
Percentage of ProceedsFromPropertiesAndEasements100.0

cp:PurchasedServicesandOther

cp:PurchasedServicesandOther


Purchased
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value355274197275266312294277265357250263284275244257277278215228
Percentage of PurchasedServicesandOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEstimatedForfeitureRate us-gaap:AwardType

cp:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEstimatedForfeitureRate

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-31
Value0.012.60.01
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEstimatedForfeitureRate100.0100.0100.0

cp:ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValue us-gaap:AwardType

cp:ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValue

cp:DeferredShareUnit


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.04.01.01.01.04.00.01.01.03.01.00.01.02.01.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValue100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0

cp:PerformanceDeferredShareUnits


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.01.00.00.00.04.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValue0.025.00.00.00.0100.0

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.0360.00.00.0341.010.00.0290.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValue100.0900.00.00.00.0850.0100.00.00.01450.00.0

us-gaap:AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease

us-gaap:AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1000000.01000000.0001000000.02000000.0
Percentage of AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease100.0100.00.00.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease us-gaap:ProductOrService

cp:NonFreight


Allowance
Period End2020-12-312020-09-302020-06-302020-03-31
Value-1000000.0002000000.0
Percentage of AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease0.00.00.0100.0

us-gaap:CargoAndFreight


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1000000.01000000.01000000.001000000.00
Percentage of AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease100.0100.00.00.0100.00.0

us-gaap:BasicEarningsPerShareProForma

us-gaap:BasicEarningsPerShareProForma


Basic
Period End2021-03-312020-03-31
Value0.90.6
Percentage of BasicEarningsPerShareProForma100.0100.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts

us-gaap:BusinessCombinationAcquisitionRelatedCosts


Business
Period End2021-06-302021-03-31
Value30836
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0100.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts us-gaap:BusinessAcquisition

cp:KCS


Business
Period End2021-03-31
Value36
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts us-gaap:BusinessAcquisition, us-gaap:IncomeStatementLocation

cp:KCS, cp:PurchasedServicesandOther


Business
Period End2021-06-302021-03-31
Value9933
Percentage of BusinessCombinationAcquisitionRelatedCosts32.191.7

cp:KCS, us-gaap:OtherNonoperatingIncomeExpense


Business
Period End2021-06-302021-03-31
Value2093.0
Percentage of BusinessCombinationAcquisitionRelatedCosts67.98.3

us-gaap:BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1

cp:DRTP


Business
Period End2020-12-22
Value479
Percentage of BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1100.0

us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1

cp:DRTP


Business
Period End2020-12-22
Value81
Percentage of BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1100.0

us-gaap:CommonStockDividendsPerShareDeclared us-gaap:AwardType

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:EmployeeStockOption


Common
Period End2020-07-212019-05-06
Value0.950.83
Percentage of CommonStockDividendsPerShareDeclared100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
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
Value19115.02537370.08.03.02.00.03.02.02.0
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:CostDirectMaterial

us-gaap:CostDirectMaterial


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value54595453505949505457464753554845
Percentage of CostDirectMaterial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CurrentIncomeTaxExpenseBenefit

us-gaap:CurrentIncomeTaxExpenseBenefit


Current
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value248140107144140146167115142101931228581159311481567327779.0159103102
Percentage of CurrentIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-1.0-1.0-1.0-1.0-1.0-1.0-9.0-1.00.0-2.00.00.0-1.0-1.03.0-1.00.0-1.0-4.0-1.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-51.0-52.0-45.0-44.0-44.0-44.0-23.0-20.0-20.0-21.0-28.0-29.0-28.0-29.0-39.0-38.0-38.0-38.0-47.0-48.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses5100.05200.04500.04400.04400.04400.0255.62000.00.01050.00.00.02800.02900.0-1300.03800.00.03800.01175.04800.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.0-1.00.00.0-1.00.00.00.0-1.00.0-1.0-2.0-1.0-1.0-1.0-2.0-2.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit0.0100.00.00.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanContributionsByEmployer us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value7.04.03.09.06.09.0131712111113111.01111121210.04.0
Percentage of DefinedBenefitPlanContributionsByEmployer100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value240240236236236237237236237237239239238239224223223223212211
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value4.04.04.04.04.05.06.04.05.05.05.05.05.04.05.05.05.05.05.06.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value8888101102101102112113113112109110109110113112113113117117
Percentage of DefinedBenefitPlanInterestCost2200.02200.02525.02550.02525.02040.01866.72825.02260.02240.02180.02200.02180.02750.02260.02240.02260.02260.02340.01950.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value8.08.08.08.08.09.0178.09.010.08.08.09.08.06.09.08.09.0139.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-58.0-57.0-55.0-56.0-56.0-56.0-76.0-77.0-77.0-77.0-72.0-71.0-71.0-71.0-48.0-48.0-47.0-48.0-23.0-22.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-725.0-712.5-687.5-700.0-700.0-622.2-447.1-962.5-855.6-770.0-900.0-887.5-788.9-887.5-800.0-533.3-587.5-533.3-176.9-244.4

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value3.03.03.03.03.03.02.03.03.03.03.03.03.03.03.03.03.03.03.02.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value4343353535352627272730303030262626252726
Percentage of DefinedBenefitPlanServiceCost1433.31433.31166.71166.71166.71166.71300.0900.0900.0900.01000.01000.01000.01000.0866.7866.7866.7833.3900.01300.0

us-gaap:DerivativeGainLossOnDerivativeNet us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:NetInvestmentHedging


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value292135264-555.0116-68.0120120-302.096-122.0-151.0-23.018011646
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DilutedEarningsPerShareProForma

us-gaap:DilutedEarningsPerShareProForma


Diluted
Period End2021-03-312020-03-31
Value0.90.6
Percentage of DilutedEarningsPerShareProForma100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1271261261281131121141141159191939381828183737272765451555857
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1271261261281131121141141159191939381828183737272765451555857
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1.0-3.0-6.0-4.0-15.031-3.01.0-1.0-1.07.0-5.04.05.00.0-7.0-4.0-2.03.02.0-1.0-17.02218-1.06.0
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EnvironmentalRemediationExpense us-gaap:IncomeStatementLocation

us-gaap:EnvironmentalRemediationExpense

cp:PurchasedServicesandOther


Environmental
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value2000000.02000000.02000000.03000000.01000000.02000000.01000000.01000000.02000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.03000000.03000000.0
Percentage of EnvironmentalRemediationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value3.0-1.0-1.0-2.0-1.05.00.0-2.04.03.0-1.01.0-4.01.02.03.00.01.00.0-2.00.07.02010.00.0-6.0
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.00.0100.0

us-gaap:FuelCosts

us-gaap:FuelCosts


Fuel
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value218206169140131212227210236209247226230215197150160170173138131125166162185195
Percentage of FuelCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnContractTermination

us-gaap:GainLossOnContractTermination


Gain
Period End2021-06-30
Value845
Percentage of GainLossOnContractTermination100.0

us-gaap:GainLossOnDerivativeInstrumentsNetPretax us-gaap:DerivativeInstrumentRisk

us-gaap:GainLossOnDerivativeInstrumentsNetPretax

us-gaap:InterestRateSwap


Gain
Period End2021-06-30
Value-240000000.0
Percentage of GainLossOnDerivativeInstrumentsNetPretax100.0

us-gaap:TreasuryLock


Gain
Period End2021-06-30
Value-7000000.0
Percentage of GainLossOnDerivativeInstrumentsNetPretax2.9

us-gaap:GainLossOnSaleOfProperties us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:GainLossOnSaleOfProperties

cp:ChicagoPropertyAndEasements


Gain
Period End2021-06-302021-03-31
Value4.050
Percentage of GainLossOnSaleOfProperties100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet

us-gaap:IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-564.091-59.0296-77.0229-196.03160131-131.072-124.0118
Percentage of IncreaseDecreaseInOtherCurrentAssetsAndLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestRevenueExpenseNet

us-gaap:InterestRevenueExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-101.0-110.0-112.0-114.0-118.0-114.0-112.0-110.0-112.0-114.0-114.0-112.0-112.0-115.0-116.0-115.0-122.0-120.0-116.0-116.0-115.0-124.0-122.0-103.0-84.0-85.0
Percentage of InterestRevenueExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value379405433382347398396355383406378365351374269256277233282294284329333352308378
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseIncome

us-gaap:LeaseIncome


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value201717151514181516151616
Percentage of LeaseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyDamagesSoughtValue us-gaap:CounterpartyName, us-gaap:LitigationCase

us-gaap:LossContingencyDamagesSoughtValue

cp:Plaintiff, cp:LacMeganticRailAccident


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-05-14
Value0.05.00.00.00.05.00.00.05.0
Percentage of LossContingencyDamagesSoughtValue0.0100.00.00.00.0100.00.00.0100.0

cp:QuebecAttorneyGeneral, cp:LacMeganticRailAccident


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302017-10-102015-07-06
Value0.03150.00.00.03150.00.0315409
Percentage of LossContingencyDamagesSoughtValue0.06300.00.00.00.06300.00.00.00.00.0

cp:QuebecMinisterofSustainableDevelopmentandEnvironment, cp:LacMeganticRailAccident


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302016-07-05
Value0.0950.00.00.0950.00.095
Percentage of LossContingencyDamagesSoughtValue0.01900.00.00.00.01900.00.00.00.0

us-gaap:LossContingencyDamagesSoughtValue us-gaap:CounterpartyName, us-gaap:LitigationCase, us-gaap:LossContingenciesByNatureOfContingency

cp:AdditionalInsurerClaimants, cp:LacMeganticRailAccident, cp:SubrogatedInsuranceClaim


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302016-07-11
Value0.03.00.00.00.03.00.00.03.0
Percentage of LossContingencyDamagesSoughtValue0.060.00.00.00.060.00.00.00.0

cp:InitialInsurerClaimants, cp:LacMeganticRailAccident, cp:SubrogatedInsuranceClaim


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302017-12-282017-09-282016-07-04
Value0.0150.00.00.0150.00.0141516
Percentage of LossContingencyDamagesSoughtValue0.0300.00.00.00.0300.00.00.00.00.00.0

cp:MMAR, cp:LacMeganticRailAccident, cp:Damagesforlossinbusinessvalue


Loss
Period End2021-06-302021-03-312020-12-31
Value0.0300.0
Percentage of LossContingencyDamagesSoughtValue0.0600.00.0

cp:TheWDTrustee, cp:LacMeganticRailAccident, cp:LadingLossRecovery


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302016-04-12
Value0.06.00.00.00.06.00.00.06.0
Percentage of LossContingencyDamagesSoughtValue0.0120.00.00.00.0120.00.00.00.0

cp:TheWDTrustee, cp:LacMeganticRailAccident, cp:Reimbursementforsettlementpaidbyconsignee


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.0600.00.00.0600.0
Percentage of LossContingencyDamagesSoughtValue0.01200.00.00.00.01200.00.0

cp:TheWDTrustee, cp:LacMeganticRailAccident, cp:Reimbursementforsettlementpaidbyconsignor


Loss
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.01100.00.00.01100.0
Percentage of LossContingencyDamagesSoughtValue0.02200.00.00.00.02200.00.0

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-96.0-95.0-85.0-86.0-86.0-85.0-87.0-99.0-98.0-97.0-97.0-96.0-95.0-96.0-71.0-68.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value5.05.05.05.05.06.0155.06.07.05.05.06.05.03.06.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent-5.2-5.3-5.9-5.8-5.8-7.1-17.2-5.1-6.1-7.2-5.2-5.2-6.3-5.2-4.2-8.8

us-gaap:PensionPlansDefinedBenefit


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-101.0-100.0-90.0-91.0-91.0-91.0-102.0-104.0-104.0-104.0-102.0-101.0-101.0-101.0-74.0-74.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent105.2105.3105.9105.8105.8107.1117.2105.1106.1107.2105.2105.2106.3105.2104.2108.8

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1 us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1

cp:ChicagoPropertyAndEasements


Noncash
Period End2021-03-31
Value42
Percentage of NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1100.0

us-gaap:NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1 us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1

cp:ChicagoPropertyAndEasements


Noncash
Period End2021-03-31
Value103
Percentage of NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-52.0-53.0541-44.0-45.0-45.0722-20.0-21.0-20.0535-28.0-29.0-29.033-38.0-37.0-38.0571-47.0-43.0-47.0-856.0-65.0-66.0-72.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value10.010.0361631-65.014-8.01516-36.012-16.0-20.0-14.019145.0-15.0-7.03.037-23.0-33.07.0-37.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Other
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value0-1000000.000-1000000.01000000.00-1000000.00
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax0.0100.00.00.0100.0100.00.0100.00.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-76.017-433.0-1.0-5.07.0-550.01.00.0-2.0-413.0-2.09.012-56.0-5.0-10.00.0-404.02.0-26.0-40.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:OtherComprehensiveIncomeLocation

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-74.0170.00.0-2.00.00.00.01.0-1.00.0-2.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax97.4100.0-0.0-0.040.00.0-0.00.00.050.0-0.0100.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-2.0-1.0-3.07.0-1.01.0-1.00.04.0-1.01.00.0-9.0-5.0-1.0-2.01.02.0
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax2.6100.060.0100.00.2100.00.0-0.0-1.050.011.10.016.1100.010.00.0-0.2100.0

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-35.088-502.06377-18.0-706.0144038-569.0412730-39.0595548-513.0411737842-13.0109-34.0
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-97.0253.03.01.02.02.02.04.02.02.01.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-35.058-398.0343042-530.0171816-389.0193236-26.0252930-366.03810.0-4.0636207412
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value-35.058-398.0343042-530.0171816-389.0193236-26.02529303810.0-4.0207412
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Other
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-30
Value454445222021292829
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-52.0-53.0-45.0-45.0-45.0-45.0-22.0-21.0-20.0-21.0-29.0-29.0-29.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-39000000.0-39000000.0-33000000.0-33000000.0-33000000.0-33000000.0-17000000.0-15000000.0-16000000.0-16000000.0-22000000.0-19000000.0-21000000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value131482-11.0-12.01235-5.0-5.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.030-104.02947-60.0-176.0-3.0222215822-5.06.0-143.0342618-147.03.07.041206-33.035-46.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent10.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherOperatingActivitiesCashFlowStatement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value52-88.00.05627-72.056241845-56.0-6.04.0-21.0-25.0-1.0-2.0-85.0-68.0-17.0-47.0-66.0174-53.0-28.0-41.0
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.01.0-10.09.02.01.04.01.0-16.00.00.01.02.00.00.0-5.01.00.02.00.01.08.07.0-20.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.00.0100.0100.00.0100.00.0100.0100.0100.0100.0

us-gaap:PaymentsOfMergerRelatedCostsFinancingActivities

us-gaap:PaymentsOfMergerRelatedCostsFinancingActivities


Payments
Period End2021-06-302021-03-31
Value1233
Percentage of PaymentsOfMergerRelatedCostsFinancingActivities100.0100.0

us-gaap:PaymentsOfMergerRelatedCostsFinancingActivities us-gaap:BusinessAcquisition

cp:KCS


Payments
Period End2021-03-31
Value33
Percentage of PaymentsOfMergerRelatedCostsFinancingActivities100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

cp:DRTP


Payments
Period End2020-12-22
Value398
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0

us-gaap:PaymentsToAcquireEquityMethodInvestments us-gaap:StatementScenario, us-gaap:SubsequentEventType

us-gaap:PaymentsToAcquireEquityMethodInvestments

srt:ScenarioForecast, us-gaap:SubsequentEvent


Payments
Period End2020-10-15
Value312
Percentage of PaymentsToAcquireEquityMethodInvestments100.0

us-gaap:PensionExpenseReversalOfExpenseNoncash

us-gaap:PensionExpenseReversalOfExpenseNoncash


Pension
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
Value-65000000.0-61000000.0-58000000.0-65000000.0-62000000.0-65000000.0-89000000.0-94000000.0-89000000.0-88000000.0-83000000.0-84000000.0-82000000.0-72000000.0-59000000.0-59000000.0-59000000.0-60000000.0
Percentage of PensionExpenseReversalOfExpenseNoncash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value8.08.0203.05.0246.06.010.04.08.04.04.08.06.02.09.0287.05.04.05.0115.01116
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet

us-gaap:ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.00.0-1.09590.00.00.03970.00.06380.00.00.00.00.00.00.00.00.026010.0810
Percentage of ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet0.00.0100.0100.00.00.00.0100.00.00.0100.00.00.00.00.00.00.00.00.00.0100.00.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-4.00.00.00.011-10.0-2.00.00.00.00.00.00.00.00.00.00.0-1.0-2.00.00.00.00.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.00.00.00.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.0100.0100.00.00.00.00.0

us-gaap:ProceedsFromRepaymentsOfCommercialPaper

us-gaap:ProceedsFromRepaymentsOfCommercialPaper


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-872.093384459-20.0-553.0-77.03552460.00.0-53.0530.00.00.0-374.01901760.00.0-669.0369-593.0
Percentage of ProceedsFromRepaymentsOfCommercialPaper100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.00.00.0100.0100.0100.00.00.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-06-30
Value0.00.0-140.01450.0
Percentage of ProceedsFromRepaymentsOfLinesOfCredit0.00.0100.0100.00.0

us-gaap:ProceedsFromSaleOfOtherProductiveAssets

us-gaap:ProceedsFromSaleOfOtherProductiveAssets


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1237132.05.02.08.04.08.06.0627.05.04.01313133.02916116041138.052
Percentage of ProceedsFromSaleOfOtherProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-41000000.0-41000000.0-35000000.0-35000000.0-35000000.0-35000000.0-20000000.0-16000000.0-18000000.0-18000000.0-24000000.0-21000000.0-23000000.0-24000000.0-30000000.0-30000000.0-39000000.0-30000000.0-38000000.0-36000000.0-36000000.0-36000000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:OtherComprehensiveIncomeLocation

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-39000000.0-39000000.0-33000000.0-33000000.0-33000000.0-33000000.0-17000000.0-15000000.0-16000000.0-16000000.0-22000000.0-19000000.0-21000000.0-22000000.0-28000000.0-28000000.0-27000000.0-28000000.0-36000000.0-34000000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax95.195.194.394.394.394.385.093.888.988.991.790.591.391.793.393.369.293.394.794.4

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-2000000.0-2000000.0-2000000.0-2000000.0-2000000.0-2000000.0-3000000.0-1000000.0-2000000.0-2000000.0-2000000.0-2000000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax4.94.95.75.75.75.715.06.211.111.18.39.5

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value10.02110.04910.0159.06.04805.09.05.07345.0153.09.05.08.0127.0116.04329.058
Percentage of RepaymentsOfLongTermDebtAndCapitalSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid

us-gaap:PerformanceShares


Share
Period End2021-03-312020-03-31
Value9876
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:PerformanceShares


Share
Period End2021-03-31
Value114010.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-05-062018-12-312018-09-302018-05-10
Value-3.043.80000.00580.8300.13540.65
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments100.0100.00.00.00.0100.0100.00.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments us-gaap:StatementScenario, us-gaap:AwardType

srt:ScenarioForecast, us-gaap:EmployeeStockOption


Share
Period End2020-07-21
Value3.8
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendPayments0.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-31
Value027.140.03
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-31
Value00.53-0.01
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised

cp:DeferredShareUnit


Share
Period End2020-09-30
Value3583.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-76.1195.160.140.1198.98-126.5400.08165.47
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-350.3437.94-6.610.330.49271.849.41-0.09231.59
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensationGross us-gaap:AwardType

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensationGross

us-gaap:EmployeeStockOption


Stock
Period End2021-06-302021-03-312020-12-31
Value1.0250.0
Percentage of StockGrantedDuringPeriodValueSharebasedCompensationGross100.0100.00.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation


Stock
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value200000.0100000.000200000.0100000.00200000.000100000.00
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.00.00.0100.0100.00.0100.00.00.0100.00.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value8.08.0192.06.011185.09.04.08.04.04.08.06.03.09.0278.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-2.0-2.0-5.0-1.02.02.0-1.0-3.0-4.0-1.0-8.00.0-2.0-2.0-2.00.0-3.0-7.06.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised-25.0-25.0-26.3-50.033.318.2-5.6-60.0-44.4-25.0-100.00.0-50.0-25.0-33.30.0-33.3-25.975.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value10.010.0243.08.013198.0135.0164.06.010.08.03.012342.0
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised125.0125.0126.3150.0133.3118.2105.6160.0144.4125.0200.0100.0150.0125.0133.3100.0133.3125.925.0

us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:StockRepurchasedDuringPeriodShares


Stock
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.31.00.11.60.61.60.90.72.10.01.2
Percentage of StockRepurchasedDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:StockRepurchasedDuringPeriodShares us-gaap:ShareRepurchaseProgram

cp:CurrentNormalCourseIssuerBidNCIB


Stock
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-312017-12-312017-09-302017-06-30
Value1.050.150861.4558540.31.519540.9562430.7076781.43570.07171.14540.6829
Percentage of StockRepurchasedDuringPeriodShares105.0150.991.050.095.0106.2101.10.00.00.00.0

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:StockRepurchasedDuringPeriodValue


Stock
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302015-06-302015-03-31
Value561396524681884712961855680.0241318132250.03431131555590490
Percentage of StockRepurchasedDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:ShareRepurchaseProgram

cp:CurrentNormalCourseIssuerBidNCIB


Stock
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-312017-12-312017-09-30
Value3965246810047129618531813225
Percentage of StockRepurchasedDuringPeriodValue100.0100.0100.053.2100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:CommonStock


Stock
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302015-06-302015-03-31
Value19153.0218.0221410.0310.015201.0160.0148.01034129
Percentage of StockRepurchasedDuringPeriodValue3.43.85.84.54.34.74.75.45.50.06.26.37.77.10.04.17.16.66.95.9

us-gaap:RetainedEarnings


Stock
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302015-06-302015-03-31
Value542381494471804492821755370.0226298122090.03291051452549461
Percentage of StockRepurchasedDuringPeriodValue96.696.294.295.595.795.395.394.694.50.093.893.792.392.90.095.992.993.493.194.1

us-gaap:TreasuryStockAcquiredAverageCostPerShare us-gaap:ShareRepurchaseProgram

us-gaap:TreasuryStockAcquiredAverageCostPerShare

cp:CurrentNormalCourseIssuerBidNCIB


Treasury
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-03-312017-12-312017-09-30
Value379.42341.27321.71310.36308.84261.73221.760.03196.46
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrealizedGainLossOnDerivatives us-gaap:DerivativeInstrumentRisk

us-gaap:UnrealizedGainLossOnDerivatives

us-gaap:ForwardContracts


Unrealized
Period End2021-06-30
Value-17000000.0
Percentage of UnrealizedGainLossOnDerivatives100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value3200000.0600000.0600000.0500000.0500000.0600000.0500000.0400000.0500000.0400000.0400000.0300000.0400000.0600000.01000000.0900000.0800000.01100000.01300000.01400000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cp:AnnualDepreciationRate us-gaap:PropertyPlantAndEquipmentByType

cp:AnnualDepreciationRate

cp:RollingStock


Annual
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2.80.0280.0280.0290.0280.023
Percentage of AnnualDepreciationRate100.0100.0100.0100.0100.0100.0

us-gaap:Building


Annual
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2.90.0290.030.030.030.032
Percentage of AnnualDepreciationRate103.6103.6107.1103.4107.1139.1

us-gaap:ComputerEquipment


Annual
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value9.30.10.1040.1140.1170.122
Percentage of AnnualDepreciationRate332.1357.1371.4393.1417.9530.4

us-gaap:PropertyPlantAndEquipmentOtherTypes


Annual
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value5.20.0520.0510.0510.0530.035
Percentage of AnnualDepreciationRate185.7185.7182.1175.9189.3152.2

us-gaap:RailroadTransportationEquipment


Annual
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2.80.0280.0280.0280.0280.026
Percentage of AnnualDepreciationRate100.0100.0100.096.6100.0113.0

cp:BusinessCombinationConsiderationTransferredEntitySharesIssuedPerAcquireeShare us-gaap:BusinessAcquisition

cp:BusinessCombinationConsiderationTransferredEntitySharesIssuedPerAcquireeShare

cp:KCS


Business
Period End2021-03-21
Value0.489
Percentage of BusinessCombinationConsiderationTransferredEntitySharesIssuedPerAcquireeShare100.0

cp:BusinessCombinationConsiderationTransferredEntitySharesIssuedPerAcquireeSharePostShareSplit us-gaap:BusinessAcquisition

cp:BusinessCombinationConsiderationTransferredEntitySharesIssuedPerAcquireeSharePostShareSplit

cp:KCS


Business
Period End2021-03-21
Value2.445
Percentage of BusinessCombinationConsiderationTransferredEntitySharesIssuedPerAcquireeSharePostShareSplit100.0

cp:BusinessCombinationMilesOfRailTunnelAcquired us-gaap:BusinessAcquisition

cp:BusinessCombinationMilesOfRailTunnelAcquired

cp:DRTP


Business
Period End2020-12-22
Value1.6
Percentage of BusinessCombinationMilesOfRailTunnelAcquired100.0

cp:BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesAccountsPayableandAccruedLiabilities us-gaap:BusinessAcquisition

cp:BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesAccountsPayableandAccruedLiabilities

cp:DRTP


Business
Period End2020-12-22
Value1.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesAccountsPayableandAccruedLiabilities100.0

cp:BusinessCombinationTransactionValue us-gaap:BusinessAcquisition

cp:BusinessCombinationTransactionValue

cp:KCS


Business
Period End2021-03-21
Value29000
Percentage of BusinessCombinationTransactionValue100.0

cp:DebtAndFinanceLeaseLiabilitiesExcludingCommercialPaper

cp:DebtAndFinanceLeaseLiabilitiesExcludingCommercialPaper


Debt
Period End2021-06-302021-03-312020-12-31
Value872288418951
Percentage of DebtAndFinanceLeaseLiabilitiesExcludingCommercialPaper100.0100.0100.0

cp:DebtAndLeaseObligationExcludingCommercialPaper

cp:DebtAndLeaseObligationExcludingCommercialPaper


Debt
Period End2020-12-312019-12-31
Value89518241
Percentage of DebtAndLeaseObligationExcludingCommercialPaper100.0100.0

cp:Debtandfinanceleaseliabilities

cp:Debtandfinanceleaseliabilities


Debtandfinanceleaseliabilities
Period End2020-09-302019-12-31
Value93278241
Percentage of Debtandfinanceleaseliabilities100.0100.0

cp:DeferredInvestmentGainsLosses us-gaap:RetirementPlanType

cp:DeferredInvestmentGainsLosses

us-gaap:PensionPlansDefinedBenefit


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value95-41.0-611.0178366
Percentage of DeferredInvestmentGainsLosses100.0100.0100.0100.0100.0

cp:DeferredRealEstateLeaseAndLicenseRevenue

cp:DeferredRealEstateLeaseAndLicenseRevenue


Deferred
Period End2020-12-312019-12-31
Value1110.0
Percentage of DeferredRealEstateLeaseAndLicenseRevenue100.0100.0

cp:DeferredRealEstateLeaseAndLicenseRevenueNonCurrent

cp:DeferredRealEstateLeaseAndLicenseRevenueNonCurrent


Deferred
Period End2020-12-312019-12-31
Value1820
Percentage of DeferredRealEstateLeaseAndLicenseRevenueNonCurrent100.0100.0

cp:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeDeferredIncomeTax us-gaap:RetirementPlanType

cp:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeDeferredIncomeTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2724162117
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeDeferredIncomeTax100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1070964797676699
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeDeferredIncomeTax3963.04016.74981.23219.04111.8

cp:DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationAccumulatedPlanAssets us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType

cp:DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationAccumulatedPlanAssets

us-gaap:OverfundedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value-894000000.0-1003000000.0-1243000000.0
Percentage of DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationAccumulatedPlanAssets100.0100.0100.0

cp:DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationPlanAssets us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType

cp:DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationPlanAssets

us-gaap:OverfundedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value141141307912127
Percentage of DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationPlanAssets100.0100.0100.0

cp:DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationProjectedBenefitObligation us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType

cp:DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationProjectedBenefitObligation

us-gaap:OverfundedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value132201207610884
Percentage of DefinedBenefitPlanPensionPlanwithPlanAssetsinExcessofProjectedBenefitObligationProjectedBenefitObligation100.0100.0100.0

cp:FundValueNotSubjecttoRedemption us-gaap:DefinedBenefitPlanByPlanAssetCategories

cp:FundValueNotSubjecttoRedemption

cp:Infrastructure


Fund
Period End2020-12-312019-12-312018-12-312017-12-31
Value8768129176
Percentage of FundValueNotSubjecttoRedemption100.0100.0100.0100.0

us-gaap:Debt


Fund
Period End2020-12-312019-12-31
Value311159
Percentage of FundValueNotSubjecttoRedemption357.5233.8

us-gaap:DefinedBenefitPlanRealEstate


Fund
Period End2020-12-312019-12-312018-12-31
Value124118114
Percentage of FundValueNotSubjecttoRedemption142.5173.588.4

cp:FundValueSubjecttoRedemption us-gaap:DefinedBenefitPlanByPlanAssetCategories

cp:FundValueSubjecttoRedemption

cp:Infrastructure


Fund
Period End2020-12-312019-12-312018-12-31
Value112119130
Percentage of FundValueSubjecttoRedemption100.0100.0100.0

us-gaap:Debt


Fund
Period End2020-12-312019-12-312018-12-31
Value154154162
Percentage of FundValueSubjecttoRedemption137.5129.4124.6

us-gaap:DefinedBenefitPlanRealEstate


Fund
Period End2020-12-312019-12-312018-12-31
Value580606583
Percentage of FundValueSubjecttoRedemption517.9509.2448.5

cp:LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent

cp:LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value9833881687578219874957884047
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent100.0100.0100.0100.0100.0100.0100.0

cp:LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent us-gaap:Currency

currency:USD


Long
Period End2020-12-312019-12-312018-12-31
Value671360165970
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent68.368.268.2

cp:LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent us-gaap:LongtermDebtType

cp:A2.90010yearNotes


Long
Period End2020-12-312019-12-312018-12-31
Value891909955
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent9.110.310.9

cp:A205010YearNotesDomain


Long
Period End2020-12-31
Value636
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent6.5

cp:A3.15010YearNotesDomain


Long
Period End2020-12-312019-12-312018-12-31
Value3993990.0
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent4.14.50.0

cp:A3.70010.5yearNotes


Long
Period End2020-12-312019-12-312018-12-31
Value318324340
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent3.23.73.9

cp:A305030YearNotes


Long
Period End2020-12-31
Value298
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent3.0

cp:A4.00010yearNotesDomain


Long
Period End2020-12-312019-12-312018-12-31
Value636649682
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent6.57.47.8

cp:A4.45012.5yearNotes


Long
Period End2020-12-312019-12-312018-12-31
Value445454477
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent4.55.15.4

cp:A4.50010yearNotes


Long
Period End2020-12-312019-12-312018-12-31
Value318324339
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent3.23.73.9

cp:A4.80020yearNotes


Long
Period End2020-12-312019-12-312018-12-31
Value381388408
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent3.94.44.7

cp:A4.80030yearNotes


Long
Period End2020-12-312019-12-312018-12-31
Value698712748
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent7.18.18.5

cp:A5.41SeniorSecuredNotes


Long
Period End2020-12-312019-12-312018-12-31
Value89100113
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent0.91.11.3

cp:A5.75030yearDebentures


Long
Period End2020-12-312019-12-312018-12-31
Value312318334
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent3.23.63.8

cp:A5.75030yearNotes


Long
Period End2020-12-312019-12-312018-12-31
Value313319336
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent3.23.63.8

cp:A5.95030yearNotes


Long
Period End2020-12-312019-12-312018-12-31
Value567578607
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent5.86.66.9

cp:A6.125100yearNotes


Long
Period End2020-12-312019-12-312018-12-31
Value114611691228
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent11.713.314.0

cp:A6.91SecuredEquipmentNotes


Long
Period End2020-12-312019-12-312018-12-31
Value7591106
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent0.81.01.2

cp:A7.12530yearDebentures


Long
Period End2020-12-312019-12-312018-12-31
Value446454477
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent4.55.15.4

cp:A9.45030yearDebentures


Long
Period End2020-12-312019-12-312018-12-31
Value318325341
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent3.23.73.9

cp:ObligationsUnderCapitalLeasesOne


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value4.03.0104148163172147
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent0.00.01.21.81.93.03.6

cp:ObligationsUnderCapitalLeasesThree


Long
Period End2020-12-312019-12-312018-12-312017-12-31
Value38454.03.0
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent0.40.50.00.0

cp:ObligationsUnderCapitalLeasesTwo


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value9799523.03.03.03.0
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent1.01.10.60.00.00.10.1

cp:PerpetualConsolidatedDebentureStockOne


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value39394138414235
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent0.40.40.50.50.50.70.9

cp:PerpetualConsolidatedDebentureStockTwo


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value6.06.06.06.06.07.06.0
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent0.10.10.10.10.10.10.1

us-gaap:EquipmentTrustCertificate


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value145557525664
Percentage of LongTermDebtAndCapitalLeaseObligationCurrentAndNonCurrent0.10.60.70.60.61.1

cp:LongtermAssetsExcludingFinancialInstrumentsAndPensionAssets

cp:LongtermAssetsExcludingFinancialInstrumentsAndPensionAssets


Longterm
Period End2020-12-312019-12-312018-12-312017-12-31
Value21423201511889217452
Percentage of LongtermAssetsExcludingFinancialInstrumentsAndPensionAssets100.0100.0100.0100.0

cp:LongtermAssetsExcludingFinancialInstrumentsAndPensionAssets us-gaap:StatementGeographical

country:CA


Longterm
Period End2020-12-312019-12-312018-12-312017-12-31
Value14258131311213311505
Percentage of LongtermAssetsExcludingFinancialInstrumentsAndPensionAssets66.665.264.265.9

country:US


Longterm
Period End2020-12-312019-12-312018-12-312017-12-31
Value7165702067595947
Percentage of LongtermAssetsExcludingFinancialInstrumentsAndPensionAssets33.434.835.834.1

cp:LongtermDebtandFinanceLeaseObligationCurrentandNoncurrentexcludingPerpetualDebt

cp:LongtermDebtandFinanceLeaseObligationCurrentandNoncurrentexcludingPerpetualDebt


Longterm
Period End2020-12-312019-12-312018-12-31
Value978887718710
Percentage of LongtermDebtandFinanceLeaseObligationCurrentandNoncurrentexcludingPerpetualDebt100.0100.0100.0

cp:OtherThanDeferredInvestmentGains us-gaap:RetirementPlanType

cp:OtherThanDeferredInvestmentGains

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value10491618166
Percentage of OtherThanDeferredInvestmentGains100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value39603434223325552842
Percentage of OtherThanDeferredInvestmentGains3807.73773.63660.73154.34306.1

cp:PercentageOfDefinedBenefitPlanExposedToForeignCurrencyRisk us-gaap:Currency

cp:PercentageOfDefinedBenefitPlanExposedToForeignCurrencyRisk

cp:OtherCurrency


Percentage
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value14.00.140.130.070.05
Percentage of PercentageOfDefinedBenefitPlanExposedToForeignCurrencyRisk100.0100.0100.0100.0100.0

currency:EUR


Percentage
Period End2020-12-312019-12-312018-12-31
Value6.00.060.04
Percentage of PercentageOfDefinedBenefitPlanExposedToForeignCurrencyRisk42.942.930.8

currency:USD


Percentage
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value33.00.390.330.40.34
Percentage of PercentageOfDefinedBenefitPlanExposedToForeignCurrencyRisk235.7278.6253.8571.4680.0

cp:PercentageOfDefinedBenefitPlanExposedToForeignCurrencyRiskExcludingCurrencyForwards us-gaap:Currency

cp:PercentageOfDefinedBenefitPlanExposedToForeignCurrencyRiskExcludingCurrencyForwards

currency:USD


Percentage
Period End2020-12-312019-12-312018-12-31
Value40.00.410.43
Percentage of PercentageOfDefinedBenefitPlanExposedToForeignCurrencyRiskExcludingCurrencyForwards100.0100.0100.0

cp:PercentageofVotingIntereststobeAcquired us-gaap:StatementScenario, us-gaap:SubsequentEventType

cp:PercentageofVotingIntereststobeAcquired

srt:ScenarioForecast, us-gaap:SubsequentEvent


Percentageof
Period End2020-10-15
Value83.5
Percentage of PercentageofVotingIntereststobeAcquired100.0

cp:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsIntheMoneyWeightedAverageExercisePrice us-gaap:AwardType

cp:SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsIntheMoneyWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Sharebased
Period End2020-12-31
Value225.2
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsIntheMoneyWeightedAverageExercisePrice100.0

cp:SharebasedCompensationArrangementbySharebasedPaymentAwardRatioEmployerMatchPerDollarContributed us-gaap:AwardType

cp:SharebasedCompensationArrangementbySharebasedPaymentAwardRatioEmployerMatchPerDollarContributed

cp:EmployeeSharePurchasePlan


Sharebased
Period End2020-12-31
Value0.3333
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardRatioEmployerMatchPerDollarContributed100.0

cp:Solvencyfundedpositionhedgedagainstinterestraterisk

cp:Solvencyfundedpositionhedgedagainstinterestraterisk


Solvencyfundedpositionhedgedagainstinterestraterisk
Period End2020-12-312019-12-312018-12-31
Value47.00.450.11
Percentage of Solvencyfundedpositionhedgedagainstinterestraterisk100.0100.0100.0

cp:TerminationFeeEarlyContractTerminationChangeInBoardRecommendation us-gaap:BusinessAcquisition

cp:TerminationFeeEarlyContractTerminationChangeInBoardRecommendation

cp:KCS


Termination
Period End2021-03-21
Value700
Percentage of TerminationFeeEarlyContractTerminationChangeInBoardRecommendation100.0

cp:TerminationFeeEarlyContractTerminationRequiredRegulatoryApproval us-gaap:BusinessAcquisition

cp:TerminationFeeEarlyContractTerminationRequiredRegulatoryApproval

cp:KCS


Termination
Period End2021-03-21
Value1000
Percentage of TerminationFeeEarlyContractTerminationRequiredRegulatoryApproval100.0

cp:UnamortizedLossesRelatedToInterestRateLocksAccountedAsCashFlowHedges us-gaap:DerivativeInstrumentRisk

cp:UnamortizedLossesRelatedToInterestRateLocksAccountedAsCashFlowHedges

us-gaap:TreasuryLock


Unamortized
Period End2020-12-312019-12-312018-12-31
Value171819
Percentage of UnamortizedLossesRelatedToInterestRateLocksAccountedAsCashFlowHedges100.0100.0100.0

dei:EntityCommonStockSharesOutstanding

dei:EntityCommonStockSharesOutstanding


Entity
Period End2021-07-272021-04-202020-10-19
Value666133134
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0

us-gaap:AccountsPayableTradeCurrent

us-gaap:AccountsPayableTradeCurrent


Accounts
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value401453474402352339407
Percentage of AccountsPayableTradeCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableGross

us-gaap:AccountsReceivableGross


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value793879865880816926847
Percentage of AccountsReceivableGross100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableGross us-gaap:ProductOrService

cp:NonFreight


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value179198203175183202210
Percentage of AccountsReceivableGross22.622.523.519.922.421.824.8

us-gaap:CargoAndFreight


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value614681662705633724637
Percentage of AccountsReceivableGross77.477.576.580.177.678.275.2

us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableNet


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312015-12-312014-12-31
Value755840825840776885805645702
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNet us-gaap:ProductOrService

cp:NonFreight


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value164183188161169188194
Percentage of AccountsReceivableNet21.721.822.819.221.821.224.1

us-gaap:CargoAndFreight


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value591657637679607697611
Percentage of AccountsReceivableNet78.378.277.280.878.278.875.9

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AccrualForEnvironmentalLossContingencies


Accrual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value808180818283778079818280818078798389858586889391
Percentage of AccrualForEnvironmentalLossContingencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedEnvironmentalLossContingenciesCurrent

us-gaap:AccruedEnvironmentalLossContingenciesCurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value9.07.08.08.09.01316
Percentage of AccruedEnvironmentalLossContingenciesCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value71707470768075
Percentage of AccruedEnvironmentalLossContingenciesNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedSalariesCurrent

us-gaap:AccruedSalariesCurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value68787872738872
Percentage of AccruedSalariesCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedVacationCurrent

us-gaap:AccruedVacationCurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value59606159656966
Percentage of AccruedVacationCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2878-2580.020941761182215042282
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value7868476252
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax2.7-2.62.23.52.9

us-gaap:PensionPlansDefinedBenefit


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value28002512204716991770
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax97.3-97.497.896.597.1

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax


Accumulated
Period End2020-12-312019-12-312018-12-31
Value493611862
Percentage of AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:NetInvestmentHedging


Accumulated
Period End2020-12-312019-12-312018-12-31
Value-381.0-499.0-749.0
Percentage of AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax-77.3-81.7-86.9

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value38394040404143
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable us-gaap:ProductOrService

cp:NonFreight


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value15151514141416
Percentage of AllowanceForDoubtfulAccountsReceivable39.538.537.535.035.034.137.2

us-gaap:CargoAndFreight


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value23242526262727
Percentage of AllowanceForDoubtfulAccountsReceivable60.561.562.565.065.065.962.8

us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax

us-gaap:AociLossCashFlowHedgeCumulativeGainLossAfterTax


Aoci
Period End2020-12-312019-12-312018-12-31
Value-48000000.0-54000000.0-62000000.0
Percentage of AociLossCashFlowHedgeCumulativeGainLossAfterTax100.0100.0100.0

us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired

cp:DRTP


Business
Period End2020-12-22
Value83.5
Percentage of BusinessAcquisitionPercentageOfVotingInterestsAcquired100.0

us-gaap:BusinessAcquisitionSharePrice us-gaap:BusinessAcquisition, us-gaap:StatementEquityComponents

us-gaap:BusinessAcquisitionSharePrice

cp:KCS, us-gaap:CommonStock


Business
Period End2021-03-21
Value90.0
Percentage of BusinessAcquisitionSharePrice100.0

cp:KCS, us-gaap:PreferredStock


Business
Period End2021-03-21
Value37.5
Percentage of BusinessAcquisitionSharePrice41.7

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents

cp:DRTP


Business
Period End2020-12-22
Value6.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables

cp:DRTP


Business
Period End2020-12-22
Value5000000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities

cp:DRTP


Business
Period End2020-12-22
Value55
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

cp:DRTP


Business
Period End2020-12-22
Value4.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities

cp:KCS


Business
Period End2021-03-21
Value3800
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet

cp:DRTP


Business
Period End2020-12-22
Value389
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

cp:DRTP


Business
Period End2020-12-22
Value436
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

cp:DRTP


Business
Period End2020-12-22
Value479
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet100.0

us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage

cp:DRTP


Business
Period End2020-12-22
Value16.5
Percentage of BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage100.0

us-gaap:CapitalLeasedAssetsGross

us-gaap:CapitalLeasedAssetsGross


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value310307312312312312312
Percentage of CapitalLeasedAssetsGross100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalLeasedAssetsGross us-gaap:PropertyPlantAndEquipmentByType

cp:RollingStock


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value302303311311311311311
Percentage of CapitalLeasedAssetsGross97.498.799.799.799.799.799.7

us-gaap:PropertyPlantAndEquipmentOtherTypes


Capital
Period End2020-12-312019-12-31
Value8.04.0
Percentage of CapitalLeasedAssetsGross2.61.3

us-gaap:CapitalLeasesBalanceSheetAssetsByMajorClassNet

us-gaap:CapitalLeasesBalanceSheetAssetsByMajorClassNet


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value171177187196206215224
Percentage of CapitalLeasesBalanceSheetAssetsByMajorClassNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalLeasesBalanceSheetAssetsByMajorClassNet us-gaap:PropertyPlantAndEquipmentByType

cp:RollingStock


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value164173187196206215224
Percentage of CapitalLeasesBalanceSheetAssetsByMajorClassNet95.997.7100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentOtherTypes


Capital
Period End2020-12-312019-12-31
Value7.04.0
Percentage of CapitalLeasesBalanceSheetAssetsByMajorClassNet4.12.3

us-gaap:CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation

us-gaap:CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1391301251161069788
Percentage of CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation us-gaap:PropertyPlantAndEquipmentByType

cp:RollingStock


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1381301241151059687
Percentage of CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation99.3100.099.299.199.199.098.9

us-gaap:PropertyPlantAndEquipmentOtherTypes


Capital
Period End2020-12-312019-12-31
Value1.00.0
Percentage of CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation0.70.0

us-gaap:CashFlowHedgeDerivativeInstrumentAssetsAtFairValue us-gaap:DerivativeInstrumentRisk

us-gaap:CashFlowHedgeDerivativeInstrumentAssetsAtFairValue

us-gaap:InterestRateSwap


Cash
Period End2021-03-31
Value20
Percentage of CashFlowHedgeDerivativeInstrumentAssetsAtFairValue100.0

us-gaap:TreasuryLock


Cash
Period End2021-03-31
Value2.0
Percentage of CashFlowHedgeDerivativeInstrumentAssetsAtFairValue10.0

us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:CashFlowHedgesDerivativeInstrumentsAtFairValueNet

us-gaap:AccumulatedOtherComprehensiveIncome, us-gaap:InterestRateSwap


Cash
Period End2021-05-21
Value-73000000.0
Percentage of CashFlowHedgesDerivativeInstrumentsAtFairValueNet100.0

us-gaap:AccumulatedOtherComprehensiveIncome, us-gaap:TreasuryLock


Cash
Period End2021-05-21
Value-2000000.0
Percentage of CashFlowHedgesDerivativeInstrumentsAtFairValueNet2.7

us-gaap:CommercialPaper

us-gaap:CommercialPaper


Commercial
Period End2020-09-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value345203974551850.0
Percentage of CommercialPaper100.0100.0100.0100.0100.00.0

us-gaap:CommercialPaper us-gaap:DebtInstrument

us-gaap:CommercialPaper


Commercial
Period End2021-03-312020-12-312019-12-31
Value715644397
Percentage of CommercialPaper0.00.0100.0

us-gaap:CommercialPaper us-gaap:LongtermDebtType

us-gaap:CommercialPaper


Commercial
Period End2020-12-312019-12-312018-12-31
Value8205160.0
Percentage of CommercialPaper0.0130.00.0

us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiability


Contract
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
Value2451146159791121467074732.02.03.02.02.0
Percentage of ContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCollateralAmount us-gaap:LongtermDebtType

us-gaap:DebtInstrumentCollateralAmount

cp:A5.41SeniorSecuredNotes


Debt
Period End2020-12-312019-12-31
Value97102
Percentage of DebtInstrumentCollateralAmount100.0100.0

cp:A6.91SecuredEquipmentNotes


Debt
Period End2020-12-312019-12-31
Value5459
Percentage of DebtInstrumentCollateralAmount55.757.8

us-gaap:EquipmentTrustCertificate


Debt
Period End2020-12-312019-12-31
Value9197
Percentage of DebtInstrumentCollateralAmount93.895.1

us-gaap:DebtInstrumentFaceAmount us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFaceAmount

cp:A205010YearNotesDomain


Debt
Period End2020-12-31
Value500
Percentage of DebtInstrumentFaceAmount100.0

cp:A305030YearNotes


Debt
Period End2020-12-31
Value300
Percentage of DebtInstrumentFaceAmount60.0

us-gaap:DeferredCompensationShareBasedArrangementsLiabilityCurrent

us-gaap:DeferredCompensationShareBasedArrangementsLiabilityCurrent


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value121855332404814
Percentage of DeferredCompensationShareBasedArrangementsLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCompensationSharebasedArrangementsLiabilityClassifiedNoncurrent

us-gaap:DeferredCompensationSharebasedArrangementsLiabilityClassifiedNoncurrent


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value14611181677273145
Percentage of DeferredCompensationSharebasedArrangementsLiabilityClassifiedNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCosts

us-gaap:DeferredCosts


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value603211112.0
Percentage of DeferredCosts100.0100.0100.0100.0100.0

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value637045485982
Percentage of DeferredCreditsAndOtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredFinanceCostsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value62596160656834
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredGainOnSaleOfProperty us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DeferredGainOnSaleOfProperty

cp:ChicagoPropertyAndEasements


Deferred
Period End2021-03-31
Value53
Percentage of DeferredGainOnSaleOfProperty100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3844369837313448382636013087
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueCurrent

us-gaap:DeferredRevenueCurrent


Deferred
Period End2020-12-312019-12-312018-12-31
Value271422.0
Percentage of DeferredRevenueCurrent100.0100.0100.0

us-gaap:DeferredRevenueNoncurrent

us-gaap:DeferredRevenueNoncurrent


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value34202426293333
Percentage of DeferredRevenueNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2000000.02000000.000000
Percentage of DeferredTaxAssetsCapitalLossCarryforwards100.0100.00.00.00.00.00.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value176.01112181628
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value4.04.02.011586969
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2222231630
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value131139978814989
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsUnrealizedCurrencyLosses

us-gaap:DeferredTaxAssetsUnrealizedCurrencyLosses


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value4.0268511
Percentage of DeferredTaxAssetsUnrealizedCurrencyLosses100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxLiabilitiesDeferredExpenseReservesAndAccruals


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value43831642260.0
Percentage of DeferredTaxLiabilitiesDeferredExpenseReservesAndAccruals100.0100.0100.0100.00.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value93917141304835
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3708352434963181379635533052
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1352812201109811127311143
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1.01.02.02.03.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.01.00.0-2.0-7.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax500.0100.00.0-100.0-233.3

us-gaap:DefinedBenefitPlanAmountOfEmployerAndRelatedPartySecuritiesIncludedInPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories

us-gaap:DefinedBenefitPlanAmountOfEmployerAndRelatedPartySecuritiesIncludedInPlanAssets

us-gaap:DefinedBenefitPlanEquitySecurities


Defined
Period End2020-12-312019-12-312018-12-31
Value484021
Percentage of DefinedBenefitPlanAmountOfEmployerAndRelatedPartySecuritiesIncludedInPlanAssets100.0100.0100.0

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-548.0-536.0-497.0-514.0-505.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5667099771129797
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet-103.3-132.3-196.6-219.6-157.8

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value1119100789413171214111110031572146013521243172616161507140713561261116510701638156514891401304
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value8941003124314071070
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2.583.250.04010.0380.04020.04220.04090.049
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.580.03250.04010.038
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.01.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2.752.750.02750.02750.02750.030.030.03
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value553541501518510513
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value137991261011372116791139911194
Percentage of DefinedBenefitPlanBenefitObligation2495.32330.92269.92254.62235.12182.1

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value142144144146
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3203320332463220
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter2255.62224.32254.22205.5

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value33343433
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value632620624609
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths1915.21823.51835.31845.5

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value635633640631
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value30303031
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value633630636625
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour2110.02100.02120.02016.1

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value631627632620
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value31323231
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value629623628614
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo2029.01946.91962.51980.6

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value14365133191234912808121961230011376
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-548.0-536.0-497.0-514.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5667099771129797
Percentage of DefinedBenefitPlanFundedStatusOfPlan-103.3-132.3-196.6-219.60.0

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value5.50.0550.070.070.070.07
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation

us-gaap:UnderfundedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value328294266
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsAccumulatedBenefitObligation100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

us-gaap:UnderfundedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value251240222
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation

us-gaap:UnderfundedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value579534488
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation


Defined
Period End2020-12-312019-12-312018-12-31
Value443419395
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets


Defined
Period End2020-12-312019-12-312018-12-31
Value187186180
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets100.0100.0100.0

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

cp:AbsoluteReturn, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value10.00.1
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0

cp:RealEstateandInfrastructure, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value9.80.098
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage98.098.0

us-gaap:CashAndCashEquivalents, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value1.20.012
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage12.012.0

us-gaap:Debt, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value9.80.098
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage98.098.0

us-gaap:DefinedBenefitPlanEquitySecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value45.10.451
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage451.0451.0

us-gaap:FixedIncomeSecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value24.10.241
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage241.0241.0

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value100.01.0
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage1000.01000.0

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.00.050.050.050.05
Percentage of DefinedBenefitPlanUltimateHealthCareCostTrendRate1100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

cp:AbsoluteReturn, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value11.00.1080.1410.130.162
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations100.0100.0100.0100.0100.0

cp:RealEstateandInfrastructure, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6.30.0680.0770.0620.075
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations57.363.054.647.746.3

us-gaap:CashAndCashEquivalents, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2.00.0090.0110.0140.011
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations18.28.37.810.86.8

us-gaap:Debt, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.30.0240.0130
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations30.022.29.20.0

us-gaap:DefinedBenefitPlanEquitySecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value49.30.5450.502
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations448.2504.6356.0

us-gaap:FixedIncomeSecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value28.10.2460.2560.2610.214
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations255.5227.8181.6200.8132.1

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value100.01.01.01.01.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations909.1925.9709.2769.2617.3

us-gaap:DerivativeFairValueOfDerivativeNet us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeNet

us-gaap:AccountsPayableAndAccruedLiabilities, us-gaap:InterestRateSwap


Derivative
Period End2021-06-30
Value-220.0
Percentage of DerivativeFairValueOfDerivativeNet100.0

us-gaap:AccountsPayableAndAccruedLiabilities, us-gaap:TreasuryLock


Derivative
Period End2021-06-30
Value-5.0
Percentage of DerivativeFairValueOfDerivativeNet2.3

us-gaap:DerivativeFairValueOfDerivativeNet us-gaap:DerivativeInstrumentRisk

us-gaap:ForeignExchangeForward


Derivative
Period End2020-12-312019-12-31
Value7313
Percentage of DerivativeFairValueOfDerivativeNet0.00.0

us-gaap:ForwardContracts


Derivative
Period End2020-12-312019-12-31
Value-2.0-72.0
Percentage of DerivativeFairValueOfDerivativeNet0.00.0

us-gaap:DerivativeNotionalAmount us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeNotionalAmount

us-gaap:ForeignExchangeForward


Derivative
Period End2020-12-312019-12-31
Value1041334
Percentage of DerivativeNotionalAmount100.0100.0

us-gaap:ForwardContracts


Derivative
Period End2021-06-302021-03-312020-12-312019-12-31
Value100080035403269
Percentage of DerivativeNotionalAmount0.00.0340.1978.7

us-gaap:InterestRateSwap


Derivative
Period End2021-06-302021-03-31
Value24001800
Percentage of DerivativeNotionalAmount0.00.0

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

us-gaap:ForwardContracts, us-gaap:SubsequentEvent


Derivative
Period End2021-06-30
Value200
Percentage of DerivativeNotionalAmount0.0

us-gaap:InterestRateSwap, us-gaap:SubsequentEvent


Derivative
Period End2021-06-30
Value600
Percentage of DerivativeNotionalAmount0.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

cp:DeferredShareUnit


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1.00.70.61.01.01.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0

cp:PSUsAndPDSUs


Employee
Period End2020-12-31
Value51
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized5100.0

us-gaap:EmployeeStockOption


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1214159.08.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized1200.02000.02500.0900.0800.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:SubsequentEventType

us-gaap:EquityMethodInvestmentOwnershipPercentage

us-gaap:SubsequentEvent


Equity
Period End2020-10-15
Value16.5
Percentage of EquityMethodInvestmentOwnershipPercentage100.0

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


Equity
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value15016616014413611582
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestments us-gaap:BusinessAcquisition

cp:DRTP


Equity
Period End2020-12-22
Value13
Percentage of EquityMethodInvestments0.0

us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments us-gaap:DefinedBenefitPlanByPlanAssetCategories

us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments

cp:Infrastructure


Fair
Period End2020-12-312019-12-312016-12-312015-12-31
Value4912860.00.0
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments100.0100.00.00.0

us-gaap:Debt


Fair
Period End2020-12-312019-12-312018-12-312017-12-31
Value5333926080.0
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments108.6137.10.00.0

us-gaap:DefinedBenefitPlanRealEstate


Fair
Period End2020-12-312019-12-312018-12-31
Value323538
Percentage of FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments6.512.20.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2020-12-31
Value143
Percentage of FinanceLeaseLiability100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2020-12-312019-12-31
Value8000000.07000000.0
Percentage of FinanceLeaseLiabilityCurrent100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2020-12-312019-12-31
Value135144
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2020-12-31
Value155
Percentage of FinanceLeaseLiabilityPaymentsDue100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive


Finance
Period End2020-12-31
Value12
Percentage of FinanceLeaseLiabilityPaymentsDueAfterYearFive100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2020-12-31
Value11
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive


Finance
Period End2020-12-31
Value8000000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFive100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2020-12-31
Value8000000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2020-12-31
Value9000000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2020-12-31
Value107
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2020-12-31
Value12
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2020-12-312019-12-31
Value171177
Percentage of FinanceLeaseRightOfUseAsset100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2020-12-312019-12-31
Value7.067.07
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value18151413119.010.010.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsGross


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value5527222222222222
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GuaranteeObligationsCurrentCarryingValue

us-gaap:GuaranteeObligationsCurrentCarryingValue


Guarantee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1810.010.09.05.04.03.0
Percentage of GuaranteeObligationsCurrentCarryingValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPayableCurrent

us-gaap:InterestPayableCurrent


Interest
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value13413113512813714775
Percentage of InterestPayableCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryNoncurrent

us-gaap:InventoryNoncurrent


Inventory
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value37412624222030
Percentage of InventoryNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:Investments

us-gaap:Investments


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value197199199223223369341215210201203201193186182185186183194169155148152112
Percentage of Investments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value71
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:CreditFacility

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LetterOfCredit


Letters
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value598060319320
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

cp:US10BillionTranche


Line
Period End2020-12-31
Value1000
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity100.0

cp:US300MillionTranche


Line
Period End2020-12-31
Value300
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity30.0

us-gaap:RevolvingCreditFacility


Line
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-06-282015-12-312014-09-26
Value1300130013001300130010001000100010002000200020002000200020002000
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity130.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

cp:US85BillionBridgeFacility


Line
Period End2021-03-31
Value8500
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

us-gaap:LetterOfCredit


Line
Period End2020-12-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-312014-12-31
Value300300300600600600600600
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity0.00.00.00.00.00.00.00.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value872178211868419126659967527349650648054775674674976231253911982330134
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities

us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value9771875786968159868489575759
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtFairValue

us-gaap:LongTermDebtFairValue


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-03-312014-12-31
Value107561060911597118601211511607101491042099721017596399206953795989680958799259958998110553103359491975097506939
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths


Long
Period End2020-12-31
Value1178
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive


Long
Period End2020-12-31
Value891
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour


Long
Period End2020-12-31
Value83
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree


Long
Period End2020-12-31
Value475
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo


Long
Period End2020-12-31
Value471
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0

us-gaap:MaterialsSuppliesAndOther

us-gaap:MaterialsSuppliesAndOther


Materials
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value218213208185192177182188195182173156160154152157192201184192195181188177
Percentage of MaterialsSuppliesAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseResidualValueOfLeasedAsset

us-gaap:OperatingLeaseResidualValueOfLeasedAsset


Operating
Period End2020-12-31
Value1000000.0
Percentage of OperatingLeaseResidualValueOfLeasedAsset100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value3.323.45
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLeasesFutureMinimumPaymentsDue us-gaap:ConsolidatedEntities

us-gaap:OperatingLeasesFutureMinimumPaymentsDue

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Operating
Period End2020-12-31
Value126
Percentage of OperatingLeasesFutureMinimumPaymentsDue100.0

us-gaap:OperatingLossCarryforwards

us-gaap:OperatingLossCarryforwards


Operating
Period End2020-12-312019-12-312018-12-31
Value154.08.0
Percentage of OperatingLossCarryforwards100.0100.0100.0

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherAssetsMiscellaneousNoncurrent


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2520242318
Percentage of OtherAssetsMiscellaneousNoncurrent100.0100.0100.0100.0100.0

us-gaap:OtherInvestments

us-gaap:OtherInvestments


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value49484338583730
Percentage of OtherInvestments100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3334343334
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value11111110.010.0
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities33.332.432.430.329.4

us-gaap:PurchaseObligation

us-gaap:PurchaseObligation


Purchase
Period End2020-12-31
Value1600
Percentage of PurchaseObligation100.0

us-gaap:SaleLeasebackTransactionDeferredGainNet

us-gaap:SaleLeasebackTransactionDeferredGainNet


Sale
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value5.06.01316192225
Percentage of SaleLeasebackTransactionDeferredGainNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-31
Value177.65
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-312018-12-31
Value300187104
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:EmployeeStockOption, cp:PriceRangeFour


Share
Period End2020-12-312019-12-312018-12-31
Value39223.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue13.011.82.9

us-gaap:EmployeeStockOption, cp:PriceRangeOne


Share
Period End2020-12-312019-12-312018-12-31
Value1037461
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue34.339.658.7

us-gaap:EmployeeStockOption, cp:PriceRangeThree


Share
Period End2020-12-312019-12-312018-12-31
Value784114
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue26.021.913.5

us-gaap:EmployeeStockOption, cp:PriceRangeTwo


Share
Period End2020-12-312019-12-312018-12-31
Value805126
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue26.727.325.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue

us-gaap:EmployeeStockOption


Share
Period End2020-12-31
Value297
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-31
Value223.98
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice100.0

us-gaap:SharePrice us-gaap:AwardType

us-gaap:SharePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-31
Value441.53
Percentage of SharePrice100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:EmployeeStockOption


Sharebased
Period End2020-12-312019-12-312018-12-31
Value16111083
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1100.0100.0100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:EmployeeStockOption, cp:PriceRangeFour


Sharebased
Period End2020-12-312019-12-312018-12-31
Value4.00.01.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue12.50.01.2

us-gaap:EmployeeStockOption, cp:PriceRangeOne


Sharebased
Period End2020-12-312019-12-312018-12-31
Value1036561
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue164.059.173.5

us-gaap:EmployeeStockOption, cp:PriceRangeThree


Sharebased
Period End2020-12-312019-12-312018-12-31
Value28243.0
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue117.421.83.6

us-gaap:EmployeeStockOption, cp:PriceRangeTwo


Sharebased
Period End2020-12-312019-12-312018-12-31
Value262118
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue116.119.121.7

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:EmployeeStockOption


Sharebased
Period End2020-12-312019-12-312018-12-312017-12-31
Value58.453.5448.9445.46
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 us-gaap:AwardType

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1

us-gaap:EmployeeStockOption


Sharebased
Period End2020-12-312019-12-312018-12-31
Value177.65162.59140.54
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1100.0100.0100.0

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:EmployeeStockOption, cp:PriceRangeFour


Sharebased
Period End2020-12-312019-12-312018-12-31
Value272.56260.52228.12
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1153.4160.2162.3

us-gaap:EmployeeStockOption, cp:PriceRangeOne


Sharebased
Period End2020-12-312019-12-312018-12-31
Value141.26116.8493.51
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice179.571.966.5

us-gaap:EmployeeStockOption, cp:PriceRangeThree


Sharebased
Period End2020-12-312019-12-312018-12-31
Value232.54218.98207.63
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1130.9134.7147.7

us-gaap:EmployeeStockOption, cp:PriceRangeTwo


Sharebased
Period End2020-12-312019-12-312018-12-31
Value203.83175.3164.49
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1114.7107.8117.0

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 us-gaap:AwardType

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1

us-gaap:EmployeeStockOption


Sharebased
Period End2020-12-312019-12-312018-12-31
Value225.2199.12176.02
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1100.0100.0100.0

us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1 us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:EmployeeStockOption, cp:PriceRangeFour


Sharebased
Period End2020-12-312019-12-312018-12-31
Value320.21265.23242.25
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1142.2133.2137.6

us-gaap:EmployeeStockOption, cp:PriceRangeOne


Sharebased
Period End2020-12-312019-12-312018-12-31
Value141.26123.093.51
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance162.761.853.1

us-gaap:EmployeeStockOption, cp:PriceRangeThree


Sharebased
Period End2020-12-312019-12-312018-12-31
Value244.17222.75205.8
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1108.4111.9116.9

us-gaap:EmployeeStockOption, cp:PriceRangeTwo


Sharebased
Period End2020-12-312019-12-312018-12-31
Value196.82188.53164.47
Percentage of SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance187.494.793.4

us-gaap:ShortTermDebtWeightedAverageInterestRate us-gaap:DebtInstrument

us-gaap:ShortTermDebtWeightedAverageInterestRate

us-gaap:CommercialPaper


Short
Period End2021-03-312020-12-312020-09-302020-03-312019-12-31
Value0.210.270.20.02550.0203
Percentage of ShortTermDebtWeightedAverageInterestRate100.0100.0100.0100.0100.0

us-gaap:StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased us-gaap:ShareRepurchaseProgram

us-gaap:StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased

cp:A2021NormalCourseIssuerBidNCIB


Stock
Period End2021-01-29
Value3.33
Percentage of StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased100.0

us-gaap:StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased us-gaap:ShareRepurchaseProgram, us-gaap:SubsequentEventType

cp:A2021NormalCourseIssuerBidNCIB, us-gaap:SubsequentEvent


Stock
Period End2021-01-27
Value3.33
Percentage of StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased0.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value9.010.0111110.09.05.04.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesBalance us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

cp:ReserveforLegalPersonalInjuryandCasualtyRelatedClaims


Valuation
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value126141152118130133150153172
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReserveForEnvironmentalCosts


Valuation
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value807782788593919089
Percentage of ValuationAllowancesAndReservesBalance63.554.653.966.165.469.960.758.851.7

Line plots across dimensions of each concept


TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:OtherComprehensiveIncomeLocation
(None,)
Other Comprehensive Income Loss Net Of Taxus-gaap: Other Comprehensive Income Location
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:Revenues
us-gaap:ProductOrService
(None,)
Revenuesus-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: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:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:OtherComprehensiveIncomeLocation
(None,)
Accumulated Other Comprehensive Income Loss Net Of Taxus-gaap: Other Comprehensive Income Location