CRC


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

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementClassOfStock

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax
us-gaap:ProductOrService
us-gaap:CostOfGoodsAndServicesSold

us-gaap:GainsLossesOnExtinguishmentOfDebt
us-gaap:DebtInstrument
us-gaap:LongtermDebtType

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
dei:LegalEntity

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted
dei:LegalEntity
us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingIncomeLoss

us-gaap:ProfitLoss

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService

us-gaap:Revenues
dei:LegalEntity

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets
dei:LegalEntity

us-gaap:LiabilitiesAndStockholdersEquity
dei:LegalEntity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent
dei:LegalEntity

us-gaap:Cash

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
dei:LegalEntity

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:InventoryFinishedGoods

us-gaap:OtherAssetsCurrent

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent
dei:LegalEntity

us-gaap:AccountsPayableCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:DebtCurrent

us-gaap:LiabilitiesCurrent
dei:LegalEntity

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:LongTermDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredFinanceCostsNoncurrentNet
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent
dei:LegalEntity

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
dei:LegalEntity
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents, us-gaap:TypeOfArrangement

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:MinorityInterest

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents, us-gaap:TypeOfArrangement

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

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

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsValuationAllowance

crc:AmortizationOfDeferredGainsAndDebtIssuanceCost

crc:AssetRetirementObligationOther

crc:CostsAndOtherDeductions
dei:LegalEntity
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
crc:DebtInstrumentRedemptionPriceChangOfControlPercentage
us-gaap:DebtInstrument
crc:DebtInstrumentRepurchasedFaceAmount1

crc:DebtorReorganizationItemsAccruedInterestAndBankFees

crc:DebtorReorganizationItemsAcquisitionOfNoncontrollingInterestAsPartOfTheSettlementAgreement

crc:DebtorReorganizationItemsDistributionToNoncontrollingInterestHolder
us-gaap:DebtInstrument
crc:DebtorReorganizationItemsGainLossOnSettlementOfLiabilitiesSubjectToCompromise

crc:DebtorReorganizationItemsNetProceedsFromRevolvingCreditFacility

crc:DebtorReorganizationItemsNetProceedsFromSecondLienTermLoan

crc:DebtorReorganizationItemsNetProceedsFromSubscriptionRightsAndBackstopCommitmentNet

crc:DefinedContributionPlanAndSupplementalPlanCost
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
crc:DisposalGroupMaximumCashConsideration
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
crc:DisposalGroupMaximumProductionProceedsDecommissioningObligations

crc:FreshStartAccountingVotingPercentageReceived

crc:ImpairmentOfOilAndGasPropertiesProvedProperties

crc:ImpairmentOfOilAndGasPropertiesUnprovedProperties

crc:IncreaseDecreaseInCapitalInvestmentAccrual

crc:InterestAndDebtExpenseNet

crc:LeaseCostExcludingFinanceLeaseCostsAndSubleaseIncome

crc:NoncontrollingInterestDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders
us-gaap:StatementClassOfStock
us-gaap:StatementClassOfStock, us-gaap:TypeOfArrangement
us-gaap:StatementEquityComponents

crc:NoncontrollingInterestInNetIncomeLossOfReturn

crc:NoncontrollingInterestInNetIncomeLossOfReturnRedeemable
us-gaap:StatementEquityComponents

crc:PaymentsForDebtorInPossessionFinancing
dei:LegalEntity, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
crc:PaymentsToAcquireWorkingInterestShareInConveyedAssets
us-gaap:Range, us-gaap:AwardType
crc:PercentOfTargetAwardThatWouldSettleFullyStock
us-gaap:AwardType, us-gaap:SubsequentEventType
crc:PlanOfReorganizationByShareBasedPaymentAwardOptionsGrantsInPeriodGross
us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:SubsequentEventType
us-gaap:ClassOfWarrantOrRight
crc:PlanOfReorganizationPaymentsForIssuanceCosts
us-gaap:ClassOfWarrantOrRight, us-gaap:SubsequentEventType
us-gaap:ClassOfWarrantOrRight
crc:PlanOfReorganizationProceedsFromIssuanceOfCommonStockGross
us-gaap:ClassOfWarrantOrRight, us-gaap:SubsequentEventType
us-gaap:ClassOfWarrantOrRight
crc:PlanOfReorganizationProceedsFromIssuanceOfCommonStockNetOfIssuanceCosts
us-gaap:ClassOfWarrantOrRight, us-gaap:SubsequentEventType
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
crc:PlanOfReorganizationSettlementAgreementCashPaid
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
crc:PlanOfReorganizationSettlementAgreementPercentageOfCommonStockInExchangeForDebt

crc:ProceedsPaymentsOnDerivativeSettlementsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities
us-gaap:SubsequentEventType
crc:StockRepurchaseProgramIncreaseInAuthorizedAmount
us-gaap:StatementClassOfStock
crc:TemporaryEquityIncreaseFromContributions
us-gaap:StatementClassOfStock, us-gaap:TypeOfArrangement

crc:UnrecoveredCapitalCosts

us-gaap:AccretionExpense

us-gaap:AssetImpairmentCharges

us-gaap:AssetRetirementObligationAccretionExpense

us-gaap:AssetRetirementObligationLiabilitiesSettled
us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskPercentage1
us-gaap:DebtInstrument, us-gaap:DebtInstrumentRedemptionPeriod, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentRedemptionPricePercentage

us-gaap:DebtorReorganizationItemsDebtorInPossessionFacilityFinancingCosts
us-gaap:CreditFacility
us-gaap:DebtInstrument

us-gaap:DebtorReorganizationItemsGainLossOnSettlementOfOtherClaimsNet1

us-gaap:DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees

us-gaap:DebtorReorganizationItemsOtherExpenseIncome
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanActualReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanActuarialGainLoss
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligationBenefitsPaid

us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:RetirementPlanType
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:DerivativeGainLossOnDerivativeNet
us-gaap:DebtInstrument
us-gaap:EarlyRepaymentOfSeniorDebt

us-gaap:EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance

us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments

us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes

us-gaap:ExplorationExpense

us-gaap:GainLossOnDerivativeInstrumentsNetPretax

us-gaap:GainLossOnDispositionOfAssets1

us-gaap:GainLossOnSaleOfCommodityContracts

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInOperatingCapital

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInReceivables

us-gaap:LeaseCost

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents, us-gaap:TypeOfArrangement

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersRedeemable
us-gaap:StatementClassOfStock
us-gaap:StatementClassOfStock, us-gaap:TypeOfArrangement

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments
us-gaap:RetirementPlanType
us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:RetirementPlanType
us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax

us-gaap:OtherExpenses

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNonoperatingExpense

us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDebtExtinguishmentCosts

us-gaap:PaymentsOfDividendsMinorityInterest

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:RestructuringCostAndReserve
us-gaap:PensionAndOtherPostretirementBenefitExpense
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:ProceedsFromIssuanceOfDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:ProceedsFromIssuanceOfSecuredDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt

us-gaap:ProceedsFromLinesOfCredit
us-gaap:DebtInstrument
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:ProceedsFromLongTermLinesOfCredit
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:ProceedsFromMinorityShareholders
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:ProceedsFromSaleOfOilAndGasPropertyAndEquipment

us-gaap:ProceedsFromSaleOfProductiveAssets

us-gaap:ProductionCosts

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

us-gaap:RepaymentsOfLinesOfCredit
us-gaap:DebtInstrument

us-gaap:RepaymentsOfSeniorDebt
us-gaap:DebtInstrument

us-gaap:RepaymentsOfSubordinatedDebt
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringCharges

us-gaap:RevenueNotFromContractWithCustomer
us-gaap:ProductOrService

us-gaap:SeveranceCosts1
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:Range, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate
us-gaap:Range, us-gaap:AwardType
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:ShortTermLeaseCost
us-gaap:StatementClassOfStock
us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:TaxesExcludingIncomeAndExciseTaxes

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:UnrealizedGainLossOnDerivatives
us-gaap:BusinessAcquisition
crc:CommitmentsToInvestForEvaluationAndDevelopmentRemaining
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
crc:ContractualObligationIncludingUndiscountedExcessAmount
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
crc:ContractualObligationUndiscountedExcessAmount

crc:DebtInstrumentCarryingAmountNoncurrent
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
crc:DebtInstrumentCovenantTermsIncreaseInCommitmentThreshold
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
crc:DebtInstrumentCovenantTermsLiquidityThreshold
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
crc:DebtInstrumentCovenantTermsMinimumMonthlyLiquidity
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType
crc:DebtInstrumentFloorInterestRate
crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:CreditFacility, us-gaap:DebtInstrument
crc:DebtorInPossessionFinancingUpfrontCommitmentFees
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
crc:DebtorReorganizationItemsDebtorInPossessionFacilityPrincipalAmount

crc:DebtorReorganizationItemsLegalAndAdvisoryProfessionalFeesReserved
us-gaap:CreditFacility, us-gaap:LongtermDebtType
crc:DebtorReorganizationItemsRestrictedCash
us-gaap:CreditFacility, us-gaap:LongtermDebtType
crc:DebtorReorganizationItemsRestrictedCashAndCashEquivalents

crc:DeferredTaxAssetsLongTermDebt
crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType
crc:DerivativeAllocationPercent
crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:DerivativeInstrumentRisk
crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType
crc:DerivativeTermsHedgingPercent
crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

crc:FreshStartAdjustmentIncreaseDecreaseLongTermDebtLeaseLiability
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
crc:FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentGross
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
crc:FreshStartAdjustmentIncreaseDecreaseStockholdersEquityAttributableToNoncontrolling
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
crc:FreshStartAdjustmentIncreaseDecreaseStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

crc:FreshStartAdjustmentLongTermObligation

crc:FreshStartAdjustmentsFairValueAdjustmentToAssetRetirementObligationsCurrent

crc:FreshStartAdjustmentsFairValueAdjustmentToAssetRetirementObligationsNoncurrent
dei:LegalEntity, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
crc:JointVentureWorkingInterestRetainedInProperties

crc:LeaseLiabilityCurrent

crc:LeaseLiabilityNonCurrent

crc:LeaseLiabilityNoncurrent

crc:LeasesRightOfUseAsset
us-gaap:CreditFacility, us-gaap:LongtermDebtType
crc:LineOfCreditFacilityBorrowingBase
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:CreditFacility, us-gaap:LongtermDebtType
crc:LineOfCreditFacilityExpectedReductionOfCommitments
us-gaap:CreditFacility, us-gaap:DebtInstrument
crc:LineOfCreditMinimumLiquidityOverAmount
us-gaap:CreditFacility, us-gaap:DebtInstrument
crc:LineOfCreditMinimumLiquidityOverRollingAmount

crc:LongTermDebtAmountReclassified

crc:OffshorePlatformsWithDecommissioningObligationsDefaultedOwnershipPercent
us-gaap:CreditFacility, us-gaap:DebtInstrument
crc:PercentageOfDebtHedgedByPriceRiskDerivatives

crc:PlanOfReorganizationCommonStockCapitalSharesReservedForFutureIssuance
us-gaap:SubsequentEventType

crc:PlanOfReorganizationCommonStockCapitalSharesReservedForIssuanceOfIncentivePlan
us-gaap:ClassOfWarrantOrRight
crc:PlanOfReorganizationCommonStockPricePerShare
us-gaap:ClassOfWarrantOrRight
crc:PlanOfReorganizationCommonStockSharesNewIssues
us-gaap:ClassOfWarrantOrRight, us-gaap:DebtInstrument
us-gaap:ClassOfWarrantOrRight, us-gaap:SubsequentEventType
us-gaap:CounterpartyName
us-gaap:CounterpartyName, us-gaap:SubsequentEventType
us-gaap:CreditFacility
us-gaap:CreditFacility, us-gaap:SubsequentEventType
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:SubsequentEventType
us-gaap:ClassOfWarrantOrRight
crc:PlanOfReorganizationExercisablePercentage
us-gaap:ClassOfWarrantOrRight, us-gaap:SubsequentEventType

crc:PlanOfReorganizationExercisePriceOfWarrantsOrRights
us-gaap:SubsequentEventType

crc:PostconfirmationCurrentLiabilitiesExcludesAssetRetirementLiability

crc:PostconfirmationCurrentLiabilitiesExcludingAssetRetirementObligations

crc:PostconfirmationFairValueOfAssetRetirementObligations

crc:PostconfirmationLessUnrestrictedCashCurrent

crc:PostconfirmationOtherLongTermLiabilitiesExcludesAssetRetirementLiability

crc:PostconfirmationPropertyAndEquipmentGross

crc:PostconfirmationStockholdersStockholdersEquityAttributableToNoncontrolling

crc:PostconfirmationUnrestrictedCashCurrent

crc:PostconfirmationWarrants

crc:PreconfirmationOtherAssetsCurrent
us-gaap:Restatement

crc:PreconfirmationPropertyAndEquipmentGross

crc:PreconfirmationRedeemableNoncontrollingInterestEquityCarryingAmount
us-gaap:Restatement

crc:PreconfirmationStockholdersEquityAttributableToNoncontrolling

crc:PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:Restatement

crc:PremiumsReceivedOnDerivativeContractsCurrent

crc:PremiumsReceivedOnDerivativeContractsNoncurrent

crc:ReorganizationValueOther

crc:SupplementalRetirementPlanSupplementalRetirementPlanAccruedLiabilities

crc:TotalLeaseLiability

crc:UnrestrictedCash
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent

us-gaap:AccruedPayrollTaxesCurrent

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
us-gaap:RetirementPlanType

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligationCurrent

us-gaap:AssetRetirementObligationsNoncurrent
us-gaap:BalanceSheetLocation

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent

us-gaap:CapitalizedExploratoryWellCosts

us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:ContractualObligation
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
us-gaap:ContractualObligationDueAfterFifthYear
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
us-gaap:ContractualObligationDueInFifthYear
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
us-gaap:ContractualObligationDueInFourthYear
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
us-gaap:ContractualObligationDueInNextTwelveMonths
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
us-gaap:ContractualObligationDueInSecondYear
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
us-gaap:ContractualObligationDueInThirdYear

us-gaap:DebtInstrumentCarryingAmount
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:DebtInstrument
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtorInPossessionFinancingAmountArranged
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:SubsequentEventType
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtorInPossessionFinancingBorrowingsOutstanding
us-gaap:SubsequentEventType
us-gaap:Range
us-gaap:DebtorInPossessionFinancingInterestRateOnBorrowingsOutstanding

us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetInterestCarryforward

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet
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:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:Range, us-gaap:TitleOfIndividual, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetFairValueGrossLiability
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis
us-gaap:DerivativeAssets

us-gaap:DerivativeAssetsCurrent
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis
us-gaap:DerivativeAssetsLiabilitiesAtFairValueNet
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis
us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis
us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis
us-gaap:DerivativeLiabilities

us-gaap:DerivativeLiabilitiesCurrent

us-gaap:DerivativeLiabilitiesNoncurrent
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilityFairValueGrossAsset

us-gaap:DueFromJointVentures

us-gaap:DueToRelatedPartiesCurrent

us-gaap:DueToRelatedPartiesNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
us-gaap:FreshStartAdjustmentIncreaseDecreaseAccruedLiabilities
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
us-gaap:FreshStartAdjustmentIncreaseDecreaseAccumulatedDepreciationAndAmortization
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
us-gaap:FreshStartAdjustmentIncreaseDecreaseAccumulatedOtherComprehensiveIncomeLoss
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
us-gaap:FreshStartAdjustmentIncreaseDecreaseAssets
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
us-gaap:FreshStartAdjustmentIncreaseDecreaseCurrentLiabilities

us-gaap:FreshStartAdjustmentIncreaseDecreaseLiabilities
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
us-gaap:FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherAssets
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligations
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
us-gaap:FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNet
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
us-gaap:FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit
us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment
us-gaap:FreshStartAdjustmentIncreaseDecreaseStockholdersEquity

us-gaap:InterestPayableCurrent
dei:LegalEntity
us-gaap:InvestmentsInAndAdvancesToAffiliatesAmountOfEquity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent
dei:LegalEntity
us-gaap:LiabilitiesSubjectToCompromise
us-gaap:DebtInstrument
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:LineOfCredit
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:LongTermDebtFairValue
us-gaap:DebtInstrument
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
dei:LegalEntity, us-gaap:Ownership, us-gaap:StatementClassOfStock
us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners
us-gaap:Ownership, us-gaap:StatementClassOfStock
us-gaap:MinorityInterestOwnershipPercentageByParent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards
us-gaap:StatementGeographical, us-gaap:IncomeTaxAuthority

us-gaap:OtherAccruedLiabilitiesNoncurrent

us-gaap:OtherAssetsMiscellaneousCurrent

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherInventorySupplies
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:PostconfirmationAccountsPayable

us-gaap:PostconfirmationAccruedLiabilities

us-gaap:PostconfirmationAdditionalPaidInCapital
us-gaap:Restatement

us-gaap:PostconfirmationAssets

us-gaap:PostconfirmationCashAndCashEquivalents

us-gaap:PostconfirmationCommonStock
us-gaap:Restatement

us-gaap:PostconfirmationCurrentAssets

us-gaap:PostconfirmationCurrentLiabilities

us-gaap:PostconfirmationInventories

us-gaap:PostconfirmationLiabilitiesAndStockholdersEquity

us-gaap:PostconfirmationLongTermDebt

us-gaap:PostconfirmationOtherAssets

us-gaap:PostconfirmationOtherLongTermDebt

us-gaap:PostconfirmationOtherNoncurrentObligations

us-gaap:PostconfirmationPreferredAndCommonStockHeldInTreasury
us-gaap:Restatement

us-gaap:PostconfirmationPrepaidAndOtherCurrentAssets

us-gaap:PostconfirmationPropertyAndEquipmentNet

us-gaap:PostconfirmationReceivablesNet

us-gaap:PostconfirmationStockholdersEquity

us-gaap:PreconfirmationAccountsPayable

us-gaap:PreconfirmationAccruedLiabilities
us-gaap:Restatement

us-gaap:PreconfirmationAccumulatedDepreciationAndAmortization

us-gaap:PreconfirmationAccumulatedOtherComprehensiveIncomeLoss

us-gaap:PreconfirmationAdditionalPaidInCapital
us-gaap:Restatement

us-gaap:PreconfirmationAssets
us-gaap:Restatement

us-gaap:PreconfirmationCashAndCashEquivalents
us-gaap:Restatement

us-gaap:PreconfirmationCurrentAssets
us-gaap:Restatement

us-gaap:PreconfirmationCurrentLiabilities
us-gaap:Restatement

us-gaap:PreconfirmationDebtorInPossessionFinancing
us-gaap:Restatement

us-gaap:PreconfirmationInventories

us-gaap:PreconfirmationLiabilitiesAndStockholdersEquity
us-gaap:Restatement

us-gaap:PreconfirmationLiabilitiesSubjectToCompromise
us-gaap:Restatement
us-gaap:Restatement
us-gaap:PreconfirmationLongTermDebt

us-gaap:PreconfirmationOtherAssets
us-gaap:Restatement

us-gaap:PreconfirmationOtherNoncurrentObligations

us-gaap:PreconfirmationPropertyAndEquipmentNet

us-gaap:PreconfirmationReceivablesNet

us-gaap:PreconfirmationRetainedEarningsDeficit
us-gaap:Restatement

us-gaap:PreconfirmationStockholdersEquity
us-gaap:Restatement
us-gaap:StatementClassOfStock
us-gaap:PreferredStockLiquidationPreferenceValue

us-gaap:PrepaidExpenseCurrent

us-gaap:PrepaidExpenseNoncurrent

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
dei:LegalEntity

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PropertyPlantAndEquipmentFairValueDisclosure
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount
us-gaap:StatementClassOfStock
us-gaap:StatementClassOfStock, us-gaap:TypeOfArrangement

us-gaap:ReorganizationValue

us-gaap:RestrictedCashAndCashEquivalents
us-gaap:RestructuringCostAndReserve
us-gaap:RestructuringAndRelatedCostExpectedCostRemaining1

us-gaap:SettlementLiabilitiesCurrent
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:CreditFacility, us-gaap:ShortTermDebtType
us-gaap:ShortTermBorrowings
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ShorttermDebtFairValue

us-gaap:StockRepurchaseProgramAuthorizedAmount1
us-gaap:SubsequentEventType

Plots across concepts


IncomeStatement
Comprehensive Income Net Of Tax
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Inventory Net
NonCurrent Assets
Operating Lease Right Of Use Asset
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Income Loss
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Diluted Shares Outstanding
OperatingLeaseLiability
Operating Lease Liability Current
InventoryNet
Inventory Finished Goods

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:CommonStockValue ▄▄▄1.01.01.0NA0.00.00.00.00.0NA0.0NANANANANANANANANANA4.04.04.04.04.04.0NANANANANA
us-gaap:CommonStockSharesAuthorized NA200.0200.0NA200.0200.0200.0200.0200.0200.0200.0200.0200.0200.0200.0200.0200.0200.0200.0200.0200.02000.02000.02000.02000.02000.02000.0NANANANANA
us-gaap:PreferredStockSharesAuthorized NA20.020.0NA20.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.020.0200.0200.0200.0200.0200.0200.0NANANANANA
us-gaap:CommonStockSharesOutstanding NA83.383.3NA49.45329749.45329749.17584349.11845149.00441348.80021748.6504248.56590548.35295745.33748642.90194642.86807242.77285142.59298342.54263741.21717541.100276389.166706388.180479387.837645386.380829386.004534385.639582NANANANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock us-gaap:CommonStockNANA83.321NANANA49.176NANANA48.65NANANA42.902NANANA42.543NANANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ███▁▁▁83.183.383.349.549.549.3NA49.249.248.7NA49.148.244.2NA42.742.442.6NA41.839.9385.3NA0.000383100000000000040.00038270.0003821NA0.00038180.00038180.0003818NANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ███▁▁▁83.183.383.349.549.549.3NA49.148.948.7NA48.548.244.2NA42.742.442.3NA40.639.9385.3NA0.000383100000000000040.00038270.0003821NA0.00038180.00038180.0003818NANA
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount █▆▃▁▅▄6.45.44.43.35.24.6NA3.21.92.5NA1.13.02.5NA2.52.71.5NANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ▆▆▆▆▅▁▆▆▆▆▇▆▆▆▆▆▆▆▆█▆▆▅▆▆▆▅▆▆▆-1.34-1.13-1.482.2-5.47-36.43-1.351.890.25-1.387.14999999999999951.34-1.7-0.05-3.25-3.11-1.131.23-2.21000000000000113.45-3.51-0.13-8.559999999999999-0.27-0.18-0.26-5.43999999999999950.480.630.57NANA
us-gaap:EarningsPerShareDiluted ▆▆▆▆▅▁▆▆▆▆▇▆▆▆▆▆▆▆▆█▆▆▅▆▆▆▅▆▆▆-1.34-1.13-1.482.2-5.47-36.43-1.33999999999999991.890.24-1.387.14999999999999951.32-1.7-0.05-3.25-3.11-1.131.22-2.029999999999999413.06-3.51-0.13-8.559999999999999-0.27-0.18-0.26-5.43999999999999950.480.630.57NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
 COGS Ratio us-gaap:ProductOrService crc:MarketingAndTrading▄█▃▄▁▄▄▅48.098.038.050.014.045.056.062.0NANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin dei:LegalEntity crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancingNANANA357.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:AllocatedShareBasedCompensationExpense NA2.0NANANANANANANANANANANANANANANANANANANANANANANANA1.0NANANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation us-gaap:GeneralAndAdministrativeExpense█▁4.02.0NANA1.01.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▆▇▆▇▆▁▇▇▇▇█▇▇-111.0-94.0-131.0-29.0-271.0-1796.0-85.094.013.0-67.0360.066.0-81.0NA-147.0-132.0-48.056.0-84.0548.0-137.0-47.0-3277.0-102.0-66.0-100.0-2093.0188.0246.0225.0234.0235.0
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService crc:ElectricityCostOfSales▄█▁▄▃▄▄▅17.024.010.017.014.016.017.018.0NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService crc:MarketingAndTrading▄█▃▅▁▃▄▆30.061.024.035.08.024.031.045.0NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService crc:TransportationCosts█▆▁▃▁▇▃▃14.012.08.010.08.013.010.010.0NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GainsLossesOnExtinguishmentOfDebt █▁0.0-2.0NA0.00.05.018.082.020.06.0NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument us-gaap:SeniorLienNANANA0.00.05.0NA82.020.06.0NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:LongtermDebtType us-gaap:SeniorNotesNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▇▇▇▇▇▅▇▇▇▇█▇▇▇▇▇▇▇▇█▇▇▁▇▇▇▃█████-107.0-89.0-125.0-7.0-247.0-1745.0-24.0127.041.0-44.0392.091.0-63.09.0-135.0-132.0-47.052.0-77.0546.0-140.0-128.0-5039.0-154.0-114.0-169.0-3522.0319.0408.0374.0352.0392.0
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancingNANANA-73.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestPaidNet ▁▁▁▂▁▃▇▄█▄█▄█▄▇▃█▃▇▄2.02.08.021.06.045.0135.071.0150.069.0155.066.0152.060.0142.056.0151.044.0138.064.0NANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▇▇▇▇▇▄▇▇▇▇█▇▇▇▇▇▇▇▇█▇▇▁▇▇▇▃▇▇▇▇▇-111.0-94.0-123.0-29.0-271.0-1796.0-67.094.012.0-67.0346.066.0-82.0-2.0-138.0-133.0-48.053.0-77.0546.0-140.0-50.0-3282.0-104.0-68.0-100.0-2091.0188.0246.0223.0212.0235.0
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▂▂▁▄▄█▇▆▅▄▇▅▄▃▂▁▁▁4.05.0-2.022.024.051.042.033.029.023.046.025.019.011.03.01.01.0-1.0NANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▇▇▇▇▇▄▇▇▇▇█▇▇▇▇▇▇▇▇█▇▇▁▇▇▇▃▇▇▇-111.0-94.0-123.0109.0-271.0-1796.0-66.093.012.0-67.0339.065.0-82.0-2.0-138.0-133.0-48.052.0-83.0546.0-140.0-50.0-3282.0-104.0-68.0-100.0-2080.0185.0242.0219.0NANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▆▆▆▇▆▁▆▇▆▆▇▇▆▆▆▆▆▇▆█▆▆-111.0-94.0-123.0109.0-271.0-1796.0-66.093.012.0-67.0339.065.0-82.0-2.0-138.0-133.0-48.052.0-76.0532.0-140.0-50.0NANANANANANANANANANA
 us-gaap:NonoperatingIncomeExpense dei:LegalEntity crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancingNANANA6.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ▆▆▆▆▆▁▇▇▇▇█▇▆▇▆▆▇▇▆▆▆▆-90.0-73.0-106.0-13.0-115.0-1649.0102.0148.0122.057.0465.0185.011.0108.0-40.0-47.039.0111.0-3.0-19.0-141.0-143.0NANANANANANANANANANA
us-gaap:ProfitLoss ▆▆▆▆▆▁▆▇▆▆█▇▆▆▆▆▆▆▆█▆▆-107.0-89.0-125.0-7.0-247.0-1745.0-25.0127.041.0-44.0392.091.0-63.09.0-135.0-132.0-47.052.0-77.0546.0-140.0-50.0NANANANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▃▃▁▂▁▂▃▃▄▄▄▅▄▄▃▃▃▄▃▃▂▂▄▄▄▄▆█████478.0432.0237.0312.0245.0430.0550.0541.0578.0601.0658.0700.0657.0575.0549.0461.0439.0590.0526.0456.0317.0322.0566.0626.0634.0577.0820.01092.01140.01121.01079.01107.0
us-gaap:Revenues ▂▂▁▃▂▄▄▅▅▅█▆▄▄▃▃▄▄▃▃▂▂▄▄▄▄▆█████304.0363.0152.0409.0276.0573.0610.0681.0653.0690.01078.0828.0549.0609.0455.0445.0516.0590.0452.0456.0317.0322.0566.0626.0634.0577.0820.01092.01140.01121.01079.01107.0
us-gaap:SellingGeneralAndAdministrativeExpense ▂▂▁▃▃▃▃▃▄▄▃▄▅▃▃▃▃▃▃▂▃▃▃█48.048.040.064.069.060.062.066.079.083.065.081.090.063.068.063.061.067.062.058.061.067.064.0129.0NANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:Assets ▁▁▁▂▂▂▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▆▆▆▆█3240.03180.03074.04856.04930.04974.06958.07035.07032.07230.07158.06984.06940.06699.06207.06183.06154.06237.06354.06332.06476.06662.07053.011913.012117.012264.012497.015657.0NANA14297.0NA
us-gaap:LiabilitiesAndStockholdersEquity ▁▁▁▂▂▂▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▆▆▆▆█3240.03180.03074.04856.04930.04974.06958.07035.07032.07230.07158.06984.06940.06699.06207.06183.06154.06237.06354.06332.06476.06662.07053.011913.012117.012264.012497.015657.0NANA14297.0NA
us-gaap:StockholdersEquity ▃▃▃▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▄▄▄▄█893.01046.01138.0-2341.0-2452.0-2183.0-389.0-308.0-408.0-426.0-361.0-725.0-789.0-763.0-814.0-667.0-539.0-495.0-557.0-493.0-1045.0-952.0-916.02355.02455.02516.02611.010869.0NANA9989.0NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:AssetsCurrent ▄▂▁▂▂▁▃▃▃▄▅▃▄█▃▂▂▂▂▁▂▂▃▄▅▅▅▇577.0461.0329.0420.0403.0356.0491.0510.0522.0577.0640.0546.0559.0949.0483.0452.0387.0409.0425.0356.0386.0431.0497.0602.0656.0654.0701.0897.0NANA254.0NA
us-gaap:Cash █▇▂▆▇▄▁▁▂▂▁▂▂151.0130.028.0122.0126.077.017.022.027.043.017.031.042.0NA20.0NANANA12.0NANANA12.0NANANA14.0NANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▃▃▁▃▃▂▁▁▁▁▁▁▁█▁▁▁151.0130.028.0122.0126.077.017.022.027.043.017.031.042.0494.020.028.09.0NA12.0NANANA12.0NANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent ▃▃▂▂▁▁▄▄▃▅▅▅▄▄▄▃▂▃▃▃▂▂▃▃▄▃▅█238.0201.0177.0155.0132.0135.0277.0248.0234.0296.0299.0293.0282.0244.0277.0221.0193.0212.0232.0202.0195.0170.0200.0217.0268.0241.0308.0441.0NANA30.0NA
us-gaap:InventoryNet ▂▂▃▃▃▃▅▅▆▇▆▆▄▁▁▂▁▁▂▃▃▃▂██▇▇▇58.059.061.061.061.060.067.066.070.071.069.069.063.056.056.058.057.057.058.061.062.061.058.073.074.071.071.072.0NANA75.0NA
us-gaap:InventoryFinishedGoods ▁▁▂▂▁▁▂▁▁▂▃▄▂▁▂▃▂▂▂▃▃▁▂▃▃▃▄█2.02.03.03.02.02.03.02.02.03.04.05.03.02.03.04.03.03.03.04.04.02.03.04.04.04.05.08.0NANA2.0NA
us-gaap:OtherAssetsCurrent ▁▁▁▂▂▂▃▄▅▄▆▄▄▄▃▃▃▂▃▂▃▅▆█▇██▇80.071.063.082.084.084.0130.0174.0191.0167.0255.0153.0172.0155.0130.0145.0128.090.0123.083.0127.0190.0227.0308.0277.0314.0308.0279.0NANA149.0NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:OperatingLeaseRightOfUseAsset ▁▂▂▃▃▃▆█▄▅35.039.038.043.045.046.059.066.050.054.0NANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▃▃▃▃▃▃▄▄▄▄▂▂▂▂▁▂▁▂▂▁▁▁█▂▂▂▄▂90.094.090.076.078.080.0115.0122.0101.0105.063.052.047.036.028.039.029.035.044.023.017.017.0244.054.051.044.0111.035.0NANA35.0NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:AccountsPayableCurrent ▂▁▁▂▁▃▃▃▃▃▅▄▃▃▂▂▂▂▂▁▁▂▂▃▃▄██248.0213.0212.0221.0196.0283.0296.0316.0290.0304.0390.0349.0330.0292.0257.0263.0243.0238.0219.0205.0187.0233.0257.0280.0278.0373.0588.0584.0NANA448.0NA
us-gaap:AccruedLiabilitiesCurrent ▇▅▂▁▄▂▃▃▁▂▁▇█▇▆▄▂▄▅▄▃▃▁▅▄▃▃▂537.0409.0261.0240.0355.0260.0313.0305.0220.0285.0217.0522.0563.0514.0475.0383.0264.0350.0407.0379.0306.0305.0222.0393.0357.0337.0318.0268.0NANA241.0NA
us-gaap:DebtCurrent NANANA733.0NANA100.0NANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ▂▁▁▂█▁▁▁▁▁▁▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂886.0622.0473.01194.05759.0543.0709.0721.0610.0689.0607.0871.0893.0806.0732.0746.0607.0688.0726.0658.0592.0638.0605.0748.0685.0735.0906.0852.0NANA689.0NA
us-gaap:OperatingLeaseLiabilityCurrent NA9.06.010.014.018.027.0NA29.027.0NANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent ▃▃▂▄▁▁▆▃▃▂▁██41.037.024.055.016.021.071.036.035.031.021.0100.095.0NA129.0NANANA124.0NANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:LongTermDebt ▁▁▁▇█589.0588.0597.04352.05083.0NA4977.0NANANANANANANANANANANANANA5942.05972.06143.06481.06590.06570.06360.0NANANANANA
us-gaap:LongTermDebtNoncurrent ▂▁█589.0588.0597.0NA0.0NA4877.0NANANANANANANANANANANANANA5843.05872.06043.0NANANA6360.0NANANANANA
us-gaap:DeferredFinanceCostsNoncurrentNet 14.0NA17.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:OtherPostretirementBenefitPlansDefinedBenefitNANA125.0NANANA113.0NANANA82.0NANANA90.0NANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:PensionPlansDefinedBenefitNANA15.0NANANA18.0NANANA14.0NANANA19.0NANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▁▂▂▄▄▅▅▅▇█▆▇█▆▅22.035.044.068.076.088.093.0100.0129.0137.0114.0120.0144.0109.094.0NA48.0NANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▇█▇▅▅▅▅▄▄▄▂▃▃▂▂▃▂▂▃▂▂▂▇▂▂▁▂▁850.0889.0822.0727.0719.0715.0720.0679.0679.0692.0575.0612.0617.0607.0602.0616.0600.0593.0620.0584.0585.0587.0830.0579.0560.0548.0565.0532.0NANA497.0NA
us-gaap:OperatingLeaseLiabilityNoncurrent NA34.035.031.033.035.037.0NANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA8.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA7.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA6.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA5.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA15.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:StockholdersEquity ▃▃▃▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▄▄▄▄█893.01046.01138.0-2341.0-2452.0-2183.0-389.0-308.0-408.0-426.0-361.0-725.0-789.0-763.0-814.0-667.0-539.0-495.0-557.0-493.0-1045.0-952.0-916.02355.02455.02516.02611.010869.0NANA9989.0NA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▇██▁▁▂▅▅▅▅▅▄▄▄▄▅▅▅▅915.01081.01182.0-2273.0-2376.0-2095.0-296.0-208.0-279.0-289.0-247.0-605.0-645.0-654.0-720.0-574.0-491.0-447.0-557.0NANANA-916.0NANANA2611.0NANANA9989.0NA
us-gaap:CommonStockValue ▄▄▄1.01.01.0NA0.00.00.00.00.0NA0.0NANANANANANANANANANA4.04.04.04.04.04.0NANANANANA
us-gaap:AdditionalPaidInCapitalCommonStock ▁▁▁██████████████▇▇▇▇▇▇▇▇▇▇1273.01270.01268.05148.05008.05006.05004.05000.04994.04989.04987.04983.04985.04930.04879.04875.04871.04867.04861.04841.04837.04789.04778.04772.04766.04757.04748.0NANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ███▁▁▁▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▆▆▆▆-328.0-217.0-123.0-7466.0-7437.0-7166.0-5370.0-5303.0-5397.0-5409.0-5342.0-5688.0-5754.0-5672.0-5670.0-5532.0-5399.0-5351.0-5404.0-5327.0-5873.0-5733.0-5683.0-2401.0-2293.0-2221.0-2117.0NANANANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▇▇▁▁▁▁████▂▂▂▁▆▆▆▅▇▇▅▄▂▂▁▁▂-8.0-8.0-8.0-23.0-23.0-23.0-23.0-5.0-5.0-6.0-6.0-20.0-20.0-21.0-23.0-10.0-11.0-11.0-14.0-7.0-9.0-12.0-15.0-20.0-22.0-24.0-24.0-22.0NANA-24.0NA
us-gaap:TreasuryStockValue 45.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▁▂▂▄▄▅▅▅▇█▆▇█▆▅22.035.044.068.076.088.093.0100.0129.0137.0114.0120.0144.0109.094.0NA48.0NANANANANANANANANANANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▁3.02.0NA2.02.02.03.04.05.02.04.0-2.04.01.04.04.04.06.0NANANANANANANANANANANANANANA
 us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents us-gaap:NoncontrollingInterestNANANA5.06.026.019.032.08.021.024.021.04.015.02.05.0NANANANANANANANANANANANANANANANA
 us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents,us-gaap:TypeOfArrangement us-gaap:NoncontrollingInterest,crc:AresJointVentureNANANA0.01.02.02.02.02.02.02.03.01.01.0NANANANANANANANANANANANANANANANANANA
 us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents,us-gaap:TypeOfArrangement us-gaap:NoncontrollingInterest,crc:BenefitStreetPartnersNANA30.05.05.024.017.030.025.00.022.018.03.014.0NANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▃▂▂▁▄▃▄▃▃▃▃▂▄▂▃▂▃▂▃▂▃▂▄▃▃▆▇▆█▇127.0147.0-12.048.0-135.0228.0136.0268.0114.0158.068.0159.034.0200.023.0105.0-13.0133.0-15.0101.0-71.0115.0-9.0180.0117.0115.0480.0655.0496.0740.0573.0NA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇█████▇▇█▆▆▆▁▆▆▇-43.0-20.0-7.0-1.0-15.0-12.0-103.0-121.012.0-182.0-191.0-158.0-669.0-138.0-139.0-100.0NANA-30.0-13.011.0-29.0-215.0-102.0-127.0-313.0-674.0-599.0-538.0-501.0-498.0NA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▂▃▆▂▃▂▂▄▅▃▆█▅▄▄▃▄▃▄▃▆▂▄▆▅▄▄▁▃-63.0-25.0-156.0-51.0199.0-156.0-38.0-152.0-142.050.0109.0-12.0183.0412.0108.014.046.0-95.047.0-80.052.0-88.0232.0-111.019.0212.0103.049.042.0-239.0-75.0NA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▅▅▃▄▅▅▄▄▄▅▄▄▁█▄▅21.0102.0-175.0-4.049.060.0-5.0-5.0-16.026.0-14.0-11.0-452.0474.0-8.019.0NANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:DepreciationDepletionAndAmortization ▂▁▁▂▂▃▃▃▃▃▃▃▃▃▃▄▄▄▄▄▄▄▆▇▆▇███▇▇▇54.052.034.089.088.0119.0114.0118.0121.0118.0130.0128.0125.0119.0132.0134.0138.0140.0137.0137.0138.0147.0247.0253.0251.0253.0312.0304.0293.0289.0291.0288.0
us-gaap:IncreaseDecreaseInInventories NANA-1.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▃▂▂▁▄▃▄▃▃▃▃▂▄▂▃▂▃▂▃▂▃▂▄▃▃▆▇▆█▇127.0147.0-12.048.0-135.0228.0136.0268.0114.0158.068.0159.034.0200.023.0105.0-13.0133.0-15.0101.0-71.0115.0-9.0180.0117.0115.0480.0655.0496.0740.0573.0NA
us-gaap:NetIncomeLoss ▇▇▇▇▇▄▇▇▇▇█▇▇▇▇▇▇▇▇█▇▇▁▇▇▇▃▇▇▇▇▇-111.0-94.0-123.0-29.0-271.0-1796.0-67.094.012.0-67.0346.066.0-82.0-2.0-138.0-133.0-48.053.0-77.0546.0-140.0-50.0-3282.0-104.0-68.0-100.0-2091.0188.0246.0223.0212.0235.0
us-gaap:ProfitLoss ▆▆▆▆▆▁▆▇▆▆█▇▆▆▆▆▆▆▆█▆▆-107.0-89.0-125.0-7.0-247.0-1745.0-25.0127.041.0-44.0392.091.0-63.09.0-135.0-132.0-47.052.0-77.0546.0-140.0-50.0NANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇█████▇▇█▆▆▆▁▆▆▇-43.0-20.0-7.0-1.0-15.0-12.0-103.0-121.012.0-182.0-191.0-158.0-669.0-138.0-139.0-100.0NANA-30.0-13.011.0-29.0-215.0-102.0-127.0-313.0-674.0-599.0-538.0-501.0-498.0NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▁▁▁▁▁▂▂▃▃▃▃▃▃▃▂▂▂▁▁▁▁▂▂▂▃▇██▇▇50.027.07.04.03.030.062.0122.0140.0131.0186.0177.0188.0139.0139.0100.082.050.030.019.05.021.078.095.095.0133.0451.0566.0528.0475.0489.0NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▂▃▆▂▃▂▂▄▅▃▆█▅▄▄▃▄▃▄▃▆▂▄▆▅▄▄▁▃-63.0-25.0-156.0-51.0199.0-156.0-38.0-152.0-142.050.0109.0-12.0183.0412.0108.014.046.0-95.047.0-80.052.0-88.0232.0-111.019.0212.0103.049.042.0-239.0-75.0NA
us-gaap:PaymentsForRepurchaseOfCommonStock 45.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1000000.01000000.01000000.00000004000000.04000000.04000000.04000000.04000000.04000000.0
Percentage of CommonStockValue100.0100.0100.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.10.10.00.00.00.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


Common
Period End2021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-06-012016-05-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value200200200200200200200200200200200200200200200200200200200200200200020002000200020002000
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Preferred Stock Shares Authorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized


Preferred
Period End2021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-06-012016-05-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-11-30
Value202020202020202020202020202020202020202020200200200200200200200
Percentage of PreferredStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value83834949494949484848484542424242424141389388387386386385
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock

us-gaap:CommonStock


Common
Period End2020-12-312020-11-012019-12-312018-12-312017-12-312016-12-31
Value838349484242
Percentage of CommonStockSharesOutstanding100.00.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value83838349494949494849484442424241393850.000383100000000000040.00038270.00038210.00038180.00038180.0003818
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value83838349494949484848484442424240393850.000383100000000000040.00038270.00038210.00038180.00038180.0003818
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value6400000.05400000.04400000.03300000.05200000.04600000.03200000.01900000.02500000.01100000.03000000.02500000.02500000.02700000.01500000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-1.34-1.13-1.482.2-5.47-36.43-1.351.890.25-1.387.151.34-1.7-0.05-3.25-3.11-1.131.23-2.2113.45-3.51-0.13-8.56-0.27-0.18-0.26-5.440.480.630.57
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
Value-1.34-1.13-1.482.2-5.47-36.43-1.341.890.24-1.387.151.32-1.7-0.05-3.25-3.11-1.131.22-2.0313.06-3.51-0.13-8.56-0.27-0.18-0.26-5.440.480.630.57
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 End2021-03-312014-12-31
Value2.01.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:GeneralAndAdministrativeExpense


Allocated
Period End2021-06-302021-03-312020-06-302020-03-31
Value4.02.01.01.0
Percentage of AllocatedShareBasedCompensationExpense0.0100.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.50.40.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-111.0-94.0-131.0-29.0-271.0-1796.0-85.09413-67.036066-81.0-147.0-132.0-48.056-84.0548-137.0-47.0-3277.0-102.0-66.0-100.0-2093.0188246225234235
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-23.2-21.8-55.3-9.3-110.6-417.70.017.42.2-11.10.09.4-12.30.0-28.6-10.99.50.0120.2-43.2-14.60.0-16.3-10.4-17.30.017.221.620.10.021.2

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService

us-gaap:CostOfGoodsAndServicesSold

crc:ElectricityCostOfSales


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value172410.01714161718
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.65.64.25.45.73.70.03.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crc:ElectricityCostOfSales0.00.00.00.00.00.00.00.0

crc:MarketingAndTrading


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value306124358.0243145
Percentage of CostOfGoodsAndServicesSold176.5254.2240.0205.957.1150.0182.4250.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.314.110.111.23.35.60.08.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crc:MarketingAndTrading0.00.00.00.00.00.00.00.0

crc:TransportationCosts


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value14128.010.08.01310.010.0
Percentage of CostOfGoodsAndServicesSold82.450.080.058.857.181.258.855.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.92.83.43.23.33.00.01.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crc:TransportationCosts0.00.00.00.00.00.00.00.0

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.0-2.00.00.05.01882206.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.0100.00.00.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.50.00.01.20.015.23.51.0

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:DebtInstrument

us-gaap:SeniorLien


Gains
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-04-30
Value0.00.05.082206.015
Percentage of GainsLossesOnExtinguishmentOfDebt0.00.0100.0100.0100.0100.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.01.215.23.51.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SeniorLien0.00.00.00.00.00.00.0

us-gaap:GainsLossesOnExtinguishmentOfDebt us-gaap:LongtermDebtType

us-gaap:SeniorNotes


Gains
Period End2021-01-20
Value-2.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SeniorNotes0.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-107.0-89.0-125.0-7.0-247.0-1745.0-24.012741-44.039291-63.09.0-135.0-132.0-47.052-77.0546-140.0-128.0-5039.0-154.0-114.0-169.0-3522.0319408374352392
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.4-20.6-52.7-2.2-100.8-405.80.023.57.1-7.30.013.0-9.61.60.0-28.6-10.78.80.0119.7-44.2-39.80.0-24.6-18.0-29.30.029.235.833.40.035.4

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Income
Period End2020-09-30
Value-73.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest1042.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-23.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing0.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value2.02.08.0216.04513571150691556615260142561514413864
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.53.46.72.410.50.013.126.011.50.09.423.110.40.012.134.47.50.014.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-111.0-94.0-123.0-29.0-271.0-1796.0-67.09412-67.034666-82.0-2.0-138.0-133.0-48.053-77.0546-140.0-50.0-3282.0-104.0-68.0-100.0-2091.0188246223212235
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-23.2-21.8-51.9-9.3-110.6-417.70.017.42.1-11.10.09.4-12.5-0.30.0-28.9-10.99.00.0119.7-44.2-15.50.0-16.6-10.7-17.30.017.221.619.90.021.2

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4.05.0-2.022245142332923462519113.01.01.0-1.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.2-0.87.19.811.90.06.15.03.80.03.62.91.90.00.20.2-0.2

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


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
Value-111.0-94.0-123.0109-271.0-1796.0-66.09312-67.033965-82.0-2.0-138.0-133.0-48.052-83.0546-140.0-50.0-3282.0-104.0-68.0-100.0-2080.0185242219
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-23.2-21.8-51.934.9-110.6-417.70.017.22.1-11.10.09.3-12.5-0.30.0-28.9-10.98.80.0119.7-44.2-15.50.0-16.6-10.7-17.30.016.921.219.5

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-111.0-94.0-123.0109-271.0-1796.0-66.09312-67.033965-82.0-2.0-138.0-133.0-48.052-76.0532-140.0-50.0
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-23.2-21.8-51.934.9-110.6-417.70.017.22.1-11.10.09.3-12.5-0.30.0-28.9-10.98.80.0116.7-44.2-15.5

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense dei:LegalEntity

us-gaap:NonoperatingIncomeExpense

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Nonoperating
Period End2020-09-30
Value6.0
Percentage of NonoperatingIncomeExpense100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing0.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-90.0-73.0-106.0-13.0-115.0-1649.01021481225746518511108-40.0-47.039111-3.0-19.0-141.0-143.0
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-18.8-16.9-44.7-4.2-46.9-383.50.027.421.19.50.026.41.718.80.0-10.28.918.80.0-4.2-44.5-44.4

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-107.0-89.0-125.0-7.0-247.0-1745.0-25.012741-44.039291-63.09.0-135.0-132.0-47.052-77.0546-140.0-50.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.4-20.6-52.7-2.2-100.8-405.80.023.57.1-7.30.013.0-9.61.60.0-28.6-10.78.80.0119.7-44.2-15.5

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value47843223731224543055054157860165870065757554946143959052645631732256662663457782010921140112110791107
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

us-gaap:NaturalGasProduction


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4547323426385250436270614346
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.410.913.510.910.68.89.59.27.410.310.68.76.58.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.410.913.510.910.68.89.59.27.410.310.68.76.58.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NaturalGasProduction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OilAndCondensate


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value380331176246193356451457496480523568553466
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.576.674.378.878.882.882.084.585.879.979.581.184.281.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax79.576.674.378.878.882.882.084.585.879.979.581.184.281.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OilAndCondensate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesInventoryPropane


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5354293226364734395965716163
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.112.512.210.310.68.48.56.36.79.89.910.19.311.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.112.512.210.310.68.48.56.36.79.89.910.19.311.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:PublicUtilitiesInventoryPropane100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value304363152409276573610681653690107882854960945544551659045245631732256662663457782010921140112110791107
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.684.064.1131.1112.7133.3110.9125.9113.0114.8163.8118.383.6105.982.996.5117.5100.085.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Revenuesdei:
Period End2020-09-30
Value357
Percentage of Revenues87.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax114.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing0.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value4848406469606266798365819063686361676258616764129
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.011.116.920.528.214.011.312.213.713.89.911.613.711.012.413.713.911.411.812.719.220.811.320.6

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value32403180307448564930497469587035703272307158698469406699620761836154623763546332647666627053119131211712264124971565714297
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Assetsdei:
Period End2020-09-30
Value4116
Percentage of Assets84.8
Percentage of Assets84.8
Percentage of Assets crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value32403180307448564930497469587035703272307158698469406699620761836154623763546332647666627053119131211712264124971565714297
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Liabilities
Period End2020-09-30
Value4116
Percentage of LiabilitiesAndStockholdersEquity84.8
Percentage of Assets84.8
Percentage of Assets crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value89310461138-2341.0-2452.0-2183.0-389.0-308.0-408.0-426.0-361.0-725.0-789.0-763.0-814.0-667.0-539.0-495.0-557.0-493.0-1045.0-952.0-916.02355245525162611108699989
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 Assets27.632.937.0-48.2-49.7-43.9-5.6-4.4-5.8-5.9-5.0-10.4-11.4-11.4-13.1-10.8-8.8-7.9-8.8-7.8-16.1-14.3-13.019.820.320.520.969.469.9

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value577461329420403356491510522577640546559949483452387409425356386431497602656654701897254
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.814.510.78.68.27.27.17.27.48.08.97.88.114.27.87.36.36.66.75.66.06.57.05.15.45.35.65.71.8

us-gaap:AssetsCurrent dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Assets
Period End2020-09-30
Value379
Percentage of AssetsCurrent90.2
Percentage of Assets7.8
Percentage of Assets crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing9.2

Cash

us-gaap:Cash

us-gaap:Cash


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-312015-12-312014-12-31
Value15113028122126771722274317314220121214
Percentage of Cash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.74.10.92.52.61.50.20.30.40.60.20.40.60.30.20.20.1

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-10-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-31
Value15113028203122126771722274317314249420289.01212
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.74.10.90.02.52.61.50.20.30.40.60.20.40.67.40.30.50.10.20.2

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Cash
Period End2020-09-302019-12-31
Value97105
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents79.5617.6
Percentage of Assets2.01.5
Percentage of Assets crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing2.40.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value23820117715513213527724823429629929328224427722119321223220219517020021726824130844130
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.36.35.83.22.72.74.03.53.34.14.24.24.13.64.53.63.13.43.73.23.02.62.81.82.22.02.52.80.2

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value5859616161606766707169696356565857575861626158737471717275
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.92.01.31.21.21.00.91.01.01.01.00.90.80.90.90.90.90.91.01.00.90.80.60.60.60.60.50.5

Inventory Finished Goods

us-gaap:InventoryFinishedGoods

us-gaap:InventoryFinishedGoods


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value2000000.02000000.03000000.03000000.02000000.02000000.03000000.02000000.02000000.03000000.04000000.05000000.03000000.02000000.03000000.04000000.03000000.03000000.03000000.04000000.04000000.02000000.03000000.04000000.04000000.04000000.05000000.08000000.02000000.0
Percentage of InventoryFinishedGoods100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.00.00.00.00.00.00.10.10.00.00.00.10.00.00.00.10.10.00.00.00.00.00.00.10.0

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value8071638284841301741911672551531721551301451289012383127190227308277314308279149
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.52.22.01.71.71.71.92.52.72.33.62.22.52.32.12.32.11.41.91.32.02.93.22.62.32.62.51.81.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value35393843454659665054
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.11.21.20.90.90.90.80.90.70.7

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value9094907678801151221011056352473628392935442317172445451441113535
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.83.02.91.61.61.61.71.71.41.50.90.70.70.50.50.60.50.60.70.40.30.33.50.50.40.40.90.20.2

us-gaap:OtherAssetsNoncurrent dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Other
Period End2020-09-30
Value61
Percentage of OtherAssetsNoncurrent80.3
Percentage of Assets1.3
Percentage of Assets crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing1.5

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value248213212221196283296316290304390349330292257263243238219205187233257280278373588584448
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.76.76.94.64.05.74.34.54.14.25.45.04.84.44.14.33.93.83.43.22.93.53.62.42.33.04.73.73.1

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value537409261240355260313305220285217522563514475383264350407379306305222393357337318268241
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.612.98.54.97.25.24.54.33.13.93.07.58.17.77.76.24.35.66.46.04.74.63.13.32.92.72.51.71.7

Debt Current

us-gaap:DebtCurrent

us-gaap:DebtCurrent


Debt
Period End2020-09-302019-12-31
Value733100
Percentage of DebtCurrent100.0100.0
Percentage of Assets15.11.4

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value88662247311945759543709721610689607871893806732746607688726658592638605748685735906852689
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.319.615.424.6116.810.910.210.28.79.58.512.512.912.011.812.19.911.011.410.49.19.68.66.35.76.07.25.44.8

us-gaap:LiabilitiesCurrent dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Liabilities
Period End2020-09-30
Value1217
Percentage of LiabilitiesCurrent101.9
Percentage of Assets25.1
Percentage of Assets crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing29.6

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-31
Value9.06.010.01418272927
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.20.20.30.40.40.40.4

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value413724551621713635312110095129124
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.20.81.10.30.41.00.50.50.40.31.41.42.12.0

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-10-312020-09-302020-06-302019-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value5895885977234352508349775942597261436481659065706360
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.218.519.40.089.6103.171.591.889.687.154.454.453.650.9

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

crc:SecondLienNotes, crc:LienNotes


Long
Period End2020-09-302019-12-31
Value18081815
Percentage of LongTermDebt41.536.5
Percentage of Assets37.226.1
Percentage of Assets crc:SecondLienNotes crc:LienNotes0.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-06-302019-12-312016-06-302016-03-312015-12-312014-12-31
Value5895885970.048775843587260436360
Percentage of LongTermDebtNoncurrent100.0100.0100.00.0100.0100.0100.0100.0100.0
Percentage of Assets18.218.519.40.070.190.288.185.750.9

Deferred Finance Costs Noncurrent Net

us-gaap:DeferredFinanceCostsNoncurrentNet

us-gaap:DeferredFinanceCostsNoncurrentNet


Deferred
Period End2021-06-302020-12-31
Value1417
Percentage of DeferredFinanceCostsNoncurrentNet100.0100.0
Percentage of Assets0.40.6

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-31
Value1251138290
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0
Percentage of Assets4.11.61.11.4
Percentage of Assets us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-31
Value15181419
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent12.015.917.121.1
Percentage of Assets0.50.30.20.3
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-30
Value223544687688931001291371141201441099448
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.71.11.41.41.51.81.31.41.81.91.61.72.11.61.50.8

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value850889822727719715720679679692575612617607602616600593620584585587830579560548565532497
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets26.228.026.715.014.614.410.39.79.79.68.08.88.99.19.710.09.79.59.89.29.08.811.84.94.64.54.53.43.5

us-gaap:OtherLiabilitiesNoncurrent dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Other
Period End2020-09-30
Value724
Percentage of OtherLiabilitiesNoncurrent99.6
Percentage of Assets14.9
Percentage of Assets crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing17.6

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value343531333537
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets1.11.10.60.70.70.5

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value8000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.3

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value7000000.0
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
Value6000000.0
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
Value5000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value15
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.5

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value4264685254
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets1.40.91.00.70.7

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value7000000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.2

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value89310461138-2341.0-2452.0-2183.0-389.0-308.0-408.0-426.0-361.0-725.0-789.0-763.0-814.0-667.0-539.0-495.0-557.0-493.0-1045.0-952.0-916.02355245525162611108699989
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 Assets27.632.937.0-48.2-49.7-43.9-5.6-4.4-5.8-5.9-5.0-10.4-11.4-11.4-13.1-10.8-8.8-7.9-8.8-7.8-16.1-14.3-13.019.820.320.520.969.469.9

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-10-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value915108111821345-2273.0-2376.0-2095.0-296.0-208.0-279.0-289.0-247.0-605.0-645.0-654.0-720.0-574.0-491.0-447.0-557.0-916.02611998998608624
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets28.234.038.50.0-46.8-48.2-42.1-4.3-3.0-4.0-4.0-3.5-8.7-9.3-9.8-11.6-9.3-8.0-7.2-8.8-13.020.969.90.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Stockholders
Period End2020-09-30
Value-2341.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest103.0
Percentage of Assets-48.2
Percentage of Assets crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing-56.9

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value-8.0-8.0-8.0-23.0-23.0-23.0-23.0-5.0-5.0-6.0-6.0-20.0-20.0-21.0-23.0-10.0-11.0-11.0-14.0-15.0-24.0-24.0-47.0-52.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.9-0.7-0.71.01.01.17.82.41.82.12.43.33.13.23.21.72.22.52.51.6-0.9-0.2-0.5-0.6
Percentage of Assets-0.2-0.3-0.3-0.5-0.5-0.5-0.3-0.1-0.1-0.1-0.1-0.3-0.3-0.3-0.4-0.2-0.2-0.2-0.2-0.2-0.2-0.20.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-10-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value1273127012681268514850085006500450004994498949874983498549304879487548714867486147784748
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest139.1117.5107.394.3-226.5-210.8-238.9-1690.5-2403.8-1790.0-1726.3-2019.0-823.6-772.9-753.8-677.6-849.3-992.1-1088.8-872.7-521.6181.8
Percentage of Assets39.339.941.20.0106.0101.6100.671.971.171.069.069.771.371.873.678.678.879.278.076.567.738.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-10-312015-12-312014-12-31
Value1.01.01.01.04.04.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.10.1-0.40.2
Percentage of Assets0.00.00.00.00.10.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-10-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value223544766876889310012913711412014410994934848
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest2.43.23.75.7-3.0-3.2-4.2-31.4-48.1-46.2-47.4-46.2-19.8-22.3-16.7-13.1-16.2-9.8-10.7
Percentage of Assets0.71.11.40.01.41.51.81.31.41.81.91.61.72.11.61.51.50.80.8
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312020-10-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value893104611381269-2341.0-2452.0-2183.0-389.0-308.0-408.0-426.0-361.0-725.0-789.0-763.0-814.0-667.0-539.0-495.0-557.0-916.026111001399078676
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest97.696.896.394.3103.0103.2104.2131.4148.1146.2147.4146.2119.8122.3116.7113.1116.2109.8110.7100.0100.0100.0100.2100.5100.6
Percentage of Assets27.632.937.00.0-48.2-49.7-43.9-5.6-4.4-5.8-5.9-5.0-10.4-11.4-11.4-13.1-10.8-8.8-7.9-8.8-13.020.970.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value-328.0-217.0-123.0-7466.0-7437.0-7166.0-5370.0-5303.0-5397.0-5409.0-5342.0-5688.0-5754.0-5672.0-5670.0-5532.0-5399.0-5351.0-5404.0-5683.0-2117.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-35.8-20.1-10.4328.5313.0342.11814.22549.51934.41871.62162.8940.2892.1867.3787.5963.81099.61197.1970.2620.4-81.1
Percentage of Assets-10.1-6.8-4.0-153.7-150.9-144.1-77.2-75.4-76.7-74.8-74.6-81.4-82.9-84.7-91.3-89.5-87.7-85.8-85.0-80.6-16.9
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-30
Value-45.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-4.9
Percentage of Assets-1.4
Percentage of Assets us-gaap:TreasuryStock0.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents, us-gaap:TypeOfArrangement

us-gaap:NoncontrollingInterest, crc:BenefitStreetPartners


Stockholders
Period End2020-12-312020-10-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value447668768893100124127991001197694
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest3.75.7-3.0-3.2-4.2-31.4-48.1-44.4-43.9-40.1-16.5-18.4-11.6-13.1
Percentage of Assets1.40.01.41.51.81.31.41.81.81.41.41.71.11.5
Percentage of Assets us-gaap:NoncontrollingInterest crc:BenefitStreetPartners0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1000000.01000000.01000000.00000004000000.04000000.04000000.04000000.04000000.04000000.0
Percentage of CommonStockValue100.0100.0100.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.10.10.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value127312701268514850085006500450004994498949874983498549304879487548714867486148414837478947784772476647574748
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets39.339.941.2106.0101.6100.671.971.171.069.069.771.371.873.678.678.879.278.076.576.574.771.967.740.139.338.838.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value-328.0-217.0-123.0-7466.0-7437.0-7166.0-5370.0-5303.0-5397.0-5409.0-5342.0-5688.0-5754.0-5672.0-5670.0-5532.0-5399.0-5351.0-5404.0-5327.0-5873.0-5733.0-5683.0-2401.0-2293.0-2221.0-2117.0
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-10.1-6.8-4.0-153.7-150.9-144.1-77.2-75.4-76.7-74.8-74.6-81.4-82.9-84.7-91.3-89.5-87.7-85.8-85.0-84.1-90.7-86.1-80.6-20.2-18.9-18.1-16.9

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value-8.0-8.0-8.0-23.0-23.0-23.0-23.0-5.0-5.0-6.0-6.0-20.0-20.0-21.0-23.0-10.0-11.0-11.0-14.0-7.0-9.0-12.0-15.0-20.0-22.0-24.0-24.0-22.0-24.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.2-0.3-0.3-0.5-0.5-0.5-0.3-0.1-0.1-0.1-0.1-0.3-0.3-0.3-0.4-0.2-0.2-0.2-0.2-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.2

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-30
Value45
Percentage of TreasuryStockValue100.0
Percentage of Assets1.4

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-06-30
Value223544687688931001291371141201441099448
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.71.11.41.41.51.81.31.41.81.91.61.72.11.61.50.8

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.02.02.02.02.03.04.05.02.04.0-2.04.01.04.04.04.06.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.02.02.02.02.03.04.05.02.04.0-2.04.01.04.04.04.06.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.02.02.02.02.03.04.05.02.04.0-2.04.01.04.04.04.06.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:NoncontrollingInterest


Minority
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value5.06.02619328.02124214.0152.05.0
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents, us-gaap:TypeOfArrangement

us-gaap:NoncontrollingInterest, crc:AresJointVenture


Minority
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.01.02.02.02.02.02.02.03.01.01.0
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders0.016.77.710.56.225.09.58.314.325.06.7
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest crc:AresJointVenture0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest, crc:BenefitStreetPartners


Minority
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value305.05.0241730250.022183.014
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders0.0100.083.392.389.593.8312.50.091.785.775.093.3
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest crc:BenefitStreetPartners0.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value127147-12.048-135.0228136268114158681593420023105-13.0133-15.0101-71.0115-9.0180117115480655496740573
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.634.0-5.115.4-55.153.024.749.519.726.310.322.75.234.84.222.8-3.022.5-2.922.1-22.435.7-1.628.818.519.958.560.043.566.053.1

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-43.0-20.0-7.0-1.0-15.0-12.0-103.0-121.012-182.0-191.0-158.0-669.0-138.0-139.0-100.0-30.0-13.011-29.0-215.0-102.0-127.0-313.0-674.0-599.0-538.0-501.0-498.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.0-4.6-3.0-0.3-6.1-2.8-18.7-22.42.1-30.3-29.0-22.6-101.8-24.0-25.3-21.7-5.7-2.93.5-9.0-38.0-16.3-20.0-54.2-82.2-54.9-47.2-44.7-46.2

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-63.0-25.0-156.0-51.0199-156.0-38.0-152.0-142.050109-12.01834121081446-95.047-80.052-88.0232-111.0192121034942-239.0-75.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.2-5.8-65.8-16.381.2-36.3-6.9-28.1-24.68.316.6-1.727.971.719.73.010.5-16.18.9-17.516.4-27.341.0-17.73.036.712.64.53.7-21.3-7.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value21102-175.0-4.04960-5.0-5.0-16.026-14.0-11.0-452.0474-8.019
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.423.6-73.8-1.320.014.0-0.9-0.9-2.84.3-2.1-1.6-68.882.4-1.54.1

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value5452348988119114118121118130128125119132134138140137137138147247253251253312304293289291288
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2020-12-31
Value-1.0
Percentage of IncreaseDecreaseInInventories100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value127147-12.048-135.0228136268114158681593420023105-13.0133-15.0101-71.0115-9.0180117115480655496740573
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.634.0-5.115.4-55.153.024.749.519.726.310.322.75.234.84.222.8-3.022.5-2.922.1-22.435.7-1.628.818.519.958.560.043.566.053.1

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-111.0-94.0-123.0-29.0-271.0-1796.0-67.09412-67.034666-82.0-2.0-138.0-133.0-48.053-77.0546-140.0-50.0-3282.0-104.0-68.0-100.0-2091.0188246223212235
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-23.2-21.8-51.9-9.3-110.6-417.7-12.217.42.1-11.152.69.4-12.5-0.3-25.1-28.9-10.99.0-14.6119.7-44.2-15.5-579.9-16.6-10.7-17.3-255.017.221.619.919.621.2

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-107.0-89.0-125.0-7.0-247.0-1745.0-25.012741-44.039291-63.09.0-135.0-132.0-47.052-77.0546-140.0-50.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.4-20.6-52.7-2.2-100.8-405.8-4.523.57.1-7.359.613.0-9.61.6-24.6-28.6-10.78.8-14.6119.7-44.2-15.5

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-43.0-20.0-7.0-1.0-15.0-12.0-103.0-121.012-182.0-191.0-158.0-669.0-138.0-139.0-100.0-30.0-13.011-29.0-215.0-102.0-127.0-313.0-674.0-599.0-538.0-501.0-498.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-9.0-4.6-3.0-0.3-6.1-2.8-18.7-22.42.1-30.3-29.0-22.6-101.8-24.0-25.3-21.7-5.7-2.93.5-9.0-38.0-16.3-20.0-54.2-82.2-54.9-47.2-44.7-46.2

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value50277.04.03.03062122140131186177188139139100825030195.021789595133451566528475489
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-63.0-25.0-156.0-51.0199-156.0-38.0-152.0-142.050109-12.01834121081446-95.047-80.052-88.0232-111.0192121034942-239.0-75.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-13.2-5.8-65.8-16.381.2-36.3-6.9-28.1-24.68.316.6-1.727.971.719.73.010.5-16.18.9-17.516.4-27.341.0-17.73.036.712.64.53.7-21.3-7.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-30
Value45
Percentage of PaymentsForRepurchaseOfCommonStock100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

crc:PerformanceStockUnits


Share
Period End2021-06-302021-03-31
Value100000.0869000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-31
Value123000.01057000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod123.0121.6

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

us-gaap:PerformanceShares, crc:A2021IncentivePlan, us-gaap:SubsequentEvent


Share
Period End2021-01-18
Value544000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0

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

crc:NonEmployeeDirectors, us-gaap:RestrictedStockUnitsRSU, crc:A2021IncentivePlan, us-gaap:SubsequentEvent


Share
Period End2021-01-18
Value258000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0

srt:ExecutiveOfficer, us-gaap:RestrictedStockUnitsRSU, crc:A2021IncentivePlan, us-gaap:SubsequentEvent


Share
Period End2021-01-18
Value544000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value133577357302375712444486
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value549646625706780382
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0

crc:AmortizationOfDeferredGainsAndDebtIssuanceCost

crc:AmortizationOfDeferredGainsAndDebtIssuanceCost


Amortization
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value6.016171618181818201919291412-12.0241415
Percentage of AmortizationOfDeferredGainsAndDebtIssuanceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crc:AssetRetirementObligationOther

crc:AssetRetirementObligationOther


Asset
Period End2020-12-31
Value1000000.0
Percentage of AssetRetirementObligationOther100.0

crc:CostsAndOtherDeductions

crc:CostsAndOtherDeductions


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value394436258422391222250853353163361364353850149549247747924357045745056057807487464342773732747727715
Percentage of CostsAndOtherDeductions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crc:CostsAndOtherDeductions dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Costs
Period End2020-09-30
Value436
Percentage of CostsAndOtherDeductions103.3

crc:DebtInstrumentRedemptionPriceChangOfControlPercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType

crc:DebtInstrumentRedemptionPriceChangOfControlPercentage

crc:A7125UnsecuredDebtNotesDue2026, us-gaap:SeniorNotes


Debt
Period End2021-01-20
Value101.0
Percentage of DebtInstrumentRedemptionPriceChangOfControlPercentage100.0

crc:DebtInstrumentRepurchasedFaceAmount1 us-gaap:DebtInstrument

crc:DebtInstrumentRepurchasedFaceAmount1

us-gaap:SeniorLien


Debt
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value0.00.07.0153581831
Percentage of DebtInstrumentRepurchasedFaceAmount10.00.0100.0100.0100.0100.0100.0

crc:DebtorReorganizationItemsAccruedInterestAndBankFees

crc:DebtorReorganizationItemsAccruedInterestAndBankFees


Debtor
Period End2020-10-31
Value1000000.0
Percentage of DebtorReorganizationItemsAccruedInterestAndBankFees100.0

crc:DebtorReorganizationItemsAcquisitionOfNoncontrollingInterestAsPartOfTheSettlementAgreement

crc:DebtorReorganizationItemsAcquisitionOfNoncontrollingInterestAsPartOfTheSettlementAgreement


Debtor
Period End2020-10-31
Value2000000.0
Percentage of DebtorReorganizationItemsAcquisitionOfNoncontrollingInterestAsPartOfTheSettlementAgreement100.0

crc:DebtorReorganizationItemsDistributionToNoncontrollingInterestHolder

crc:DebtorReorganizationItemsDistributionToNoncontrollingInterestHolder


Debtor
Period End2020-10-31
Value3000000.0
Percentage of DebtorReorganizationItemsDistributionToNoncontrollingInterestHolder100.0

crc:DebtorReorganizationItemsGainLossOnSettlementOfLiabilitiesSubjectToCompromise us-gaap:DebtInstrument

crc:DebtorReorganizationItemsGainLossOnSettlementOfLiabilitiesSubjectToCompromise

crc:A2017CreditAgreement


Debtor
Period End2020-10-27
Value4000
Percentage of DebtorReorganizationItemsGainLossOnSettlementOfLiabilitiesSubjectToCompromise100.0

crc:DebtorReorganizationItemsNetProceedsFromRevolvingCreditFacility

crc:DebtorReorganizationItemsNetProceedsFromRevolvingCreditFacility


Debtor
Period End2020-10-31
Value225
Percentage of DebtorReorganizationItemsNetProceedsFromRevolvingCreditFacility100.0

crc:DebtorReorganizationItemsNetProceedsFromSecondLienTermLoan

crc:DebtorReorganizationItemsNetProceedsFromSecondLienTermLoan


Debtor
Period End2020-10-31
Value200
Percentage of DebtorReorganizationItemsNetProceedsFromSecondLienTermLoan100.0

crc:DebtorReorganizationItemsNetProceedsFromSubscriptionRightsAndBackstopCommitmentNet

crc:DebtorReorganizationItemsNetProceedsFromSubscriptionRightsAndBackstopCommitmentNet


Debtor
Period End2020-10-31
Value446
Percentage of DebtorReorganizationItemsNetProceedsFromSubscriptionRightsAndBackstopCommitmentNet100.0

crc:DefinedContributionPlanAndSupplementalPlanCost

crc:DefinedContributionPlanAndSupplementalPlanCost


Defined
Period End2020-12-31
Value28
Percentage of DefinedContributionPlanAndSupplementalPlanCost100.0

crc:DisposalGroupMaximumCashConsideration us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

crc:DisposalGroupMaximumCashConsideration

us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperations, crc:VenturaBasin


Disposal
Period End2021-06-30
Value102
Percentage of DisposalGroupMaximumCashConsideration100.0

crc:DisposalGroupMaximumProductionProceedsDecommissioningObligations us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

crc:DisposalGroupMaximumProductionProceedsDecommissioningObligations

us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperations, crc:VenturaBasin


Disposal
Period End2021-06-30
Value20
Percentage of DisposalGroupMaximumProductionProceedsDecommissioningObligations100.0

crc:FreshStartAccountingVotingPercentageReceived

crc:FreshStartAccountingVotingPercentageReceived


Fresh
Period End2020-12-31
Value50.0
Percentage of FreshStartAccountingVotingPercentageReceived100.0

crc:ImpairmentOfOilAndGasPropertiesProvedProperties

crc:ImpairmentOfOilAndGasPropertiesProvedProperties


Impairment
Period End2020-09-302020-06-302020-03-31
Value0.00.01487
Percentage of ImpairmentOfOilAndGasPropertiesProvedProperties0.00.0100.0

crc:ImpairmentOfOilAndGasPropertiesUnprovedProperties

crc:ImpairmentOfOilAndGasPropertiesUnprovedProperties


Impairment
Period End2020-09-302020-06-302020-03-31
Value0.00.0228
Percentage of ImpairmentOfOilAndGasPropertiesUnprovedProperties0.00.0100.0

crc:IncreaseDecreaseInCapitalInvestmentAccrual

crc:IncreaseDecreaseInCapitalInvestmentAccrual


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-8.0-5.01.0-3.09.01936-8.010.047-29.0-18.0-17.0-5.0-1.00.0-9.0-17.01.0-6.04.07.03.0-1.030173-45.0-25.0-23.024
Percentage of IncreaseDecreaseInCapitalInvestmentAccrual100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crc:InterestAndDebtExpenseNet

crc:InterestAndDebtExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value131311288587909598100
Percentage of InterestAndDebtExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crc:LeaseCostExcludingFinanceLeaseCostsAndSubleaseIncome

crc:LeaseCostExcludingFinanceLeaseCostsAndSubleaseIncome


Lease
Period End2020-12-31
Value9.0
Percentage of LeaseCostExcludingFinanceLeaseCostsAndSubleaseIncome100.0

crc:NoncontrollingInterestDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders

crc:NoncontrollingInterestDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders


Noncontrolling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1714305.06.02619328.021
Percentage of NoncontrollingInterestDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crc:NoncontrollingInterestDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders us-gaap:StatementClassOfStock

crc:MezzanineEquityRedeemableNoncontrollingInterest


Noncontrolling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value221818171818181718184.0
Percentage of NoncontrollingInterestDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders440.0300.069.289.556.2225.085.70.00.00.00.0

crc:NoncontrollingInterestDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders us-gaap:StatementClassOfStock, us-gaap:TypeOfArrangement

crc:MezzanineEquityRedeemableNoncontrollingInterest, crc:AresJointVenture


Noncontrolling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value22181817181818
Percentage of NoncontrollingInterestDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders440.0300.069.289.556.2225.085.7

crc:NoncontrollingInterestDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Noncontrolling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1714305.06.02619328.021
Percentage of NoncontrollingInterestDecreaseFromDistributionsToRedeemableNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crc:NoncontrollingInterestInNetIncomeLossOfReturn

crc:NoncontrollingInterestInNetIncomeLossOfReturn


Noncontrolling
Period End2020-09-30
Value138
Percentage of NoncontrollingInterestInNetIncomeLossOfReturn100.0

crc:NoncontrollingInterestInNetIncomeLossOfReturnRedeemable

crc:NoncontrollingInterestInNetIncomeLossOfReturnRedeemable


Noncontrolling
Period End2020-09-30
Value138
Percentage of NoncontrollingInterestInNetIncomeLossOfReturnRedeemable100.0

crc:NoncontrollingInterestInNetIncomeLossOfReturnRedeemable us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Noncontrolling
Period End2020-09-30
Value138
Percentage of NoncontrollingInterestInNetIncomeLossOfReturnRedeemable100.0

us-gaap:Parent


Noncontrolling
Period End2020-09-30
Value138
Percentage of NoncontrollingInterestInNetIncomeLossOfReturnRedeemable100.0

crc:PaymentsForDebtorInPossessionFinancing

crc:PaymentsForDebtorInPossessionFinancing


Payments
Period End2020-10-31
Value733
Percentage of PaymentsForDebtorInPossessionFinancing100.0

crc:PaymentsToAcquireWorkingInterestShareInConveyedAssets dei:LegalEntity, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

crc:PaymentsToAcquireWorkingInterestShareInConveyedAssets

crc:JointVentureWithMacquarieInfrastructureAndRealAssetsInc, crc:JointVentureWithMacquarieInfrastructureAndRealAssetsInc, us-gaap:SubsequentEvent


Payments
Period End2021-08-05
Value53
Percentage of PaymentsToAcquireWorkingInterestShareInConveyedAssets100.0

crc:PercentOfTargetAwardThatWouldSettleFullyStock us-gaap:Range, us-gaap:AwardType

crc:PercentOfTargetAwardThatWouldSettleFullyStock

srt:Maximum, crc:PerformanceStockUnits


Percent
Period End2021-06-302021-03-31
Value0100.0
Percentage of PercentOfTargetAwardThatWouldSettleFullyStock0.0100.0

crc:PlanOfReorganizationByShareBasedPaymentAwardOptionsGrantsInPeriodGross us-gaap:AwardType, us-gaap:SubsequentEventType

crc:PlanOfReorganizationByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:PerformanceShares, us-gaap:SubsequentEvent


Plan
Period End2021-01-31
Value544000.0
Percentage of PlanOfReorganizationByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0

crc:PlanOfReorganizationByShareBasedPaymentAwardOptionsGrantsInPeriodGross us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:SubsequentEventType

crc:NonEmployeeDirectors, us-gaap:RestrictedStockUnitsRSU, us-gaap:SubsequentEvent


Plan
Period End2021-01-31
Value258000.0
Percentage of PlanOfReorganizationByShareBasedPaymentAwardOptionsGrantsInPeriodGross47.4

srt:ExecutiveOfficer, us-gaap:RestrictedStockUnitsRSU, us-gaap:SubsequentEvent


Plan
Period End2021-01-31
Value544000.0
Percentage of PlanOfReorganizationByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0

crc:PlanOfReorganizationPaymentsForIssuanceCosts us-gaap:ClassOfWarrantOrRight

crc:PlanOfReorganizationPaymentsForIssuanceCosts

crc:SubscriptionRights


Plan
Period End2020-10-27
Value4000000.0
Percentage of PlanOfReorganizationPaymentsForIssuanceCosts100.0

crc:PlanOfReorganizationPaymentsForIssuanceCosts us-gaap:ClassOfWarrantOrRight, us-gaap:SubsequentEventType

crc:SubscriptionRights, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value4000000.0
Percentage of PlanOfReorganizationPaymentsForIssuanceCosts100.0

crc:PlanOfReorganizationProceedsFromIssuanceOfCommonStockGross us-gaap:ClassOfWarrantOrRight

crc:PlanOfReorganizationProceedsFromIssuanceOfCommonStockGross

crc:SubscriptionRights


Plan
Period End2020-10-27
Value450
Percentage of PlanOfReorganizationProceedsFromIssuanceOfCommonStockGross100.0

crc:PlanOfReorganizationProceedsFromIssuanceOfCommonStockGross us-gaap:ClassOfWarrantOrRight, us-gaap:SubsequentEventType

crc:SubscriptionRights, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value450
Percentage of PlanOfReorganizationProceedsFromIssuanceOfCommonStockGross100.0

crc:PlanOfReorganizationProceedsFromIssuanceOfCommonStockNetOfIssuanceCosts us-gaap:ClassOfWarrantOrRight

crc:PlanOfReorganizationProceedsFromIssuanceOfCommonStockNetOfIssuanceCosts

crc:SubscriptionRights


Plan
Period End2020-10-27
Value446
Percentage of PlanOfReorganizationProceedsFromIssuanceOfCommonStockNetOfIssuanceCosts100.0

crc:PlanOfReorganizationProceedsFromIssuanceOfCommonStockNetOfIssuanceCosts us-gaap:ClassOfWarrantOrRight, us-gaap:SubsequentEventType

crc:SubscriptionRights, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value446
Percentage of PlanOfReorganizationProceedsFromIssuanceOfCommonStockNetOfIssuanceCosts100.0

crc:PlanOfReorganizationSettlementAgreementCashPaid us-gaap:DebtInstrument, us-gaap:SubsequentEventType

crc:PlanOfReorganizationSettlementAgreementCashPaid

crc:EHPNotes, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value2500000.0
Percentage of PlanOfReorganizationSettlementAgreementCashPaid100.0

crc:PlanOfReorganizationSettlementAgreementPercentageOfCommonStockInExchangeForDebt us-gaap:DebtInstrument, us-gaap:SubsequentEventType

crc:PlanOfReorganizationSettlementAgreementPercentageOfCommonStockInExchangeForDebt

crc:EHPNotes, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value20.8
Percentage of PlanOfReorganizationSettlementAgreementPercentageOfCommonStockInExchangeForDebt100.0

crc:ProceedsPaymentsOnDerivativeSettlementsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities

crc:ProceedsPaymentsOnDerivativeSettlementsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-30
Value82391.0-2.0-5.0-98.0-43.0-40.0-14.0-14.050796831-8.0
Percentage of ProceedsPaymentsOnDerivativeSettlementsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crc:StockRepurchaseProgramIncreaseInAuthorizedAmount us-gaap:SubsequentEventType

crc:StockRepurchaseProgramIncreaseInAuthorizedAmount

us-gaap:SubsequentEvent


Stock
Period End2021-08-05
Value100
Percentage of StockRepurchaseProgramIncreaseInAuthorizedAmount100.0

crc:TemporaryEquityIncreaseFromContributions us-gaap:StatementClassOfStock

crc:TemporaryEquityIncreaseFromContributions

crc:MezzanineEquityRedeemableNoncontrollingInterest


Temporary
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value-1.00.02.00.00.00.00.0
Percentage of TemporaryEquityIncreaseFromContributions100.00.0100.00.00.00.00.0

crc:TemporaryEquityIncreaseFromContributions us-gaap:StatementClassOfStock, us-gaap:TypeOfArrangement

crc:MezzanineEquityRedeemableNoncontrollingInterest, crc:ElkHillsCarbon


Temporary
Period End2020-09-302020-06-302020-03-312019-06-302019-03-31
Value-1.00.02.00.00.0
Percentage of TemporaryEquityIncreaseFromContributions100.00.0100.00.00.0

crc:UnrecoveredCapitalCosts

crc:UnrecoveredCapitalCosts


Unrecovered
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value0.03.00.00.021
Percentage of UnrecoveredCapitalCosts0.0100.00.00.0100.0

us-gaap:AccretionExpense

us-gaap:AccretionExpense


Accretion
Period End2021-06-302020-06-30
Value1310.0
Percentage of AccretionExpense100.0100.0

us-gaap:AssetImpairmentCharges

us-gaap:AssetImpairmentCharges


Asset
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0.03.00.00.017360.00.0
Percentage of AssetImpairmentCharges0.0100.00.00.0100.00.00.0

us-gaap:AssetRetirementObligationAccretionExpense

us-gaap:AssetRetirementObligationAccretionExpense


Asset
Period End2020-12-31
Value8.0
Percentage of AssetRetirementObligationAccretionExpense100.0

us-gaap:AssetRetirementObligationLiabilitiesSettled

us-gaap:AssetRetirementObligationLiabilitiesSettled


Asset
Period End2020-12-31
Value5.0
Percentage of AssetRetirementObligationLiabilitiesSettled100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:ConcentrationRiskPercentage1

crc:ThreeCaliforniaRefineries, crc:OilAndGasSalesAndOtherRevenue, us-gaap:CustomerConcentrationRisk


Concentration
Period End2020-12-31
Value50.0
Percentage of ConcentrationRiskPercentage1100.0

us-gaap:DebtInstrumentRedemptionPricePercentage us-gaap:DebtInstrument, us-gaap:DebtInstrumentRedemptionPeriod, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentRedemptionPricePercentage

crc:A7125UnsecuredDebtNotesDue2026, us-gaap:DebtInstrumentRedemptionPeriodFive, us-gaap:SeniorNotes


Debt
Period End2021-01-20
Value100.0
Percentage of DebtInstrumentRedemptionPricePercentage100.0

crc:A7125UnsecuredDebtNotesDue2026, us-gaap:DebtInstrumentRedemptionPeriodFour, us-gaap:SeniorNotes


Debt
Period End2021-01-20
Value102.0
Percentage of DebtInstrumentRedemptionPricePercentage102.0

crc:A7125UnsecuredDebtNotesDue2026, us-gaap:DebtInstrumentRedemptionPeriodOne, us-gaap:SeniorNotes


Debt
Period End2021-01-20
Value35.0
Percentage of DebtInstrumentRedemptionPricePercentage35.0

crc:A7125UnsecuredDebtNotesDue2026, us-gaap:DebtInstrumentRedemptionPeriodThree, us-gaap:SeniorNotes


Debt
Period End2021-01-20
Value104.0
Percentage of DebtInstrumentRedemptionPricePercentage104.0

crc:A7125UnsecuredDebtNotesDue2026, us-gaap:DebtInstrumentRedemptionPeriodTwo, us-gaap:SeniorNotes


Debt
Period End2021-01-20
Value107.0
Percentage of DebtInstrumentRedemptionPricePercentage107.0

us-gaap:DebtorReorganizationItemsDebtorInPossessionFacilityFinancingCosts

us-gaap:DebtorReorganizationItemsDebtorInPossessionFacilityFinancingCosts


Debtor
Period End2020-09-30
Value25
Percentage of DebtorReorganizationItemsDebtorInPossessionFacilityFinancingCosts100.0

us-gaap:DebtorReorganizationItemsDebtorInPossessionFacilityFinancingCosts us-gaap:CreditFacility

us-gaap:RevolvingCreditFacility


Debtor
Period End2020-10-31
Value18
Percentage of DebtorReorganizationItemsDebtorInPossessionFacilityFinancingCosts0.0

us-gaap:DebtorReorganizationItemsDebtorInPossessionFacilityFinancingCosts us-gaap:DebtInstrument

crc:SecondLienNotes


Debtor
Period End2020-10-31
Value2.0
Percentage of DebtorReorganizationItemsDebtorInPossessionFacilityFinancingCosts0.0

us-gaap:DebtorReorganizationItemsGainLossOnSettlementOfOtherClaimsNet1

us-gaap:DebtorReorganizationItemsGainLossOnSettlementOfOtherClaimsNet1


Debtor
Period End2020-09-30
Value125
Percentage of DebtorReorganizationItemsGainLossOnSettlementOfOtherClaimsNet1100.0

us-gaap:DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees

us-gaap:DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees


Debtor
Period End2020-12-312020-10-312020-09-30
Value3.01534
Percentage of DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees100.0100.0100.0

us-gaap:DebtorReorganizationItemsOtherExpenseIncome

us-gaap:DebtorReorganizationItemsOtherExpenseIncome


Debtor
Period End2021-06-302021-03-312020-12-312020-09-30
Value2000000.02000000.03000000.0-66000000.0
Percentage of DebtorReorganizationItemsOtherExpenseIncome100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanActualReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanActualReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-31
Value2.0
Percentage of DefinedBenefitPlanActualReturnOnPlanAssets100.0

us-gaap:DefinedBenefitPlanActuarialGainLoss us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanActuarialGainLoss

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value-7.0
Percentage of DefinedBenefitPlanActuarialGainLoss100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312018-12-312018-09-302017-12-312017-09-302017-06-30
Value-3.03.0-1.0-6.00.0-1.0
Percentage of DefinedBenefitPlanActuarialGainLoss42.90.00.00.00.00.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-1000000.0000-1000000.00-1000000.0-1000000.0-1000000.00
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.00.00.00.0100.00.0100.0100.0100.00.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value3.11
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-31
Value2.7
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate86.8

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-31
Value5.42
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-31
Value4.0
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease100.0

us-gaap:DefinedBenefitPlanBenefitObligationBenefitsPaid us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligationBenefitsPaid

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value1.0
Percentage of DefinedBenefitPlanBenefitObligationBenefitsPaid100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-31
Value2.0
Percentage of DefinedBenefitPlanBenefitObligationBenefitsPaid200.0

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:DefinedBenefitPlanContributionsByEmployer


Defined
Period End2021-06-302020-12-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-30
Value1.05.00.00.01.01.00.06.01.01.01.01.04.01.01.05.00.03.00.00.00.00.00.0
Percentage of DefinedBenefitPlanContributionsByEmployer100.0100.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.00.0

us-gaap:DefinedBenefitPlanContributionsByEmployer us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value1.0
Percentage of DefinedBenefitPlanContributionsByEmployer20.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-31
Value6.0
Percentage of DefinedBenefitPlanContributionsByEmployer120.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1000000.01000000.00001000000.001000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1000000.01000000.01000000.01000000.01000000.01000000.01000000.02000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value001000000.00001000000.01000000.001000000.01000000.001000000.01000000.0
Percentage of DefinedBenefitPlanInterestCost0.00.0100.00.00.00.0100.0100.00.0100.0100.00.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2.02.01.02.02.02.08.02.03.02.02.02.02.02.01.02.02.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.01.01.08.00.01.01.01.00.02.02.01.01.01.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost0.050.050.0100.00.033.350.050.00.0100.0100.0100.050.050.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.001000000.01000000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1000000.001000000.0000000000
Percentage of DefinedBenefitPlanServiceCost100.00.0100.00.00.00.00.00.00.00.00.00.0

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DerivativeGainLossOnDerivativeNet


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-265.0-213.0-141.00.0-4.079-139.03721-89.0488-54.0-167.0-38.0-134.0-65.04373-126.0-14.0-118.0-25.02.068-17.0
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarlyRepaymentOfSeniorDebt us-gaap:DebtInstrument

us-gaap:EarlyRepaymentOfSeniorDebt

us-gaap:SeniorLien


Early
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.03.07.0904514
Percentage of EarlyRepaymentOfSeniorDebt0.00.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance

us-gaap:EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance


Effective
Period End2020-12-31
Value-27.0
Percentage of EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance100.0

us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments

us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments


Effective
Period End2020-12-31
Value-1.0
Percentage of EffectiveIncomeTaxRateReconciliationOtherAdjustments100.0

us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes

us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes


Effective
Period End2020-12-31
Value7.0
Percentage of EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes100.0

us-gaap:ExplorationExpense

us-gaap:ExplorationExpense


Exploration
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value2.02.01.02.02.05.04.05.010.010.0164.06.08.05.05.06.06.010.03.05.05.07.05.07.017682515313541
Percentage of ExplorationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDerivativeInstrumentsNetPretax

us-gaap:GainLossOnDerivativeInstrumentsNetPretax


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-30
Value-265.0-213.0-141.00.0-4.079-28.03721-89.0260-54.0-167.0-38.0-141.0-65.0437310053-17.0
Percentage of GainLossOnDerivativeInstrumentsNetPretax100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets1

us-gaap:GainLossOnDispositionOfAssets1


Gain
Period End2021-06-302021-03-312019-12-312019-09-302019-05-012019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-02-282017-03-312016-12-312016-09-302016-06-30
Value0.02.00.00.00.00.01.03.01.00.00.00.02121-1.00.031
Percentage of GainLossOnDispositionOfAssets10.0100.00.00.00.00.0100.0100.0100.00.00.00.0100.0100.0100.00.0100.0

us-gaap:GainLossOnSaleOfCommodityContracts

us-gaap:GainLossOnSaleOfCommodityContracts


Gain
Period End2020-12-31
Value-1.0
Percentage of GainLossOnSaleOfCommodityContracts100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


Increase
Period End2020-12-31
Value-67.0
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0

us-gaap:IncreaseDecreaseInOperatingCapital

us-gaap:IncreaseDecreaseInOperatingCapital


Increase
Period End2021-06-302020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value25-23.0-17.0-113.0-107.0282449110-68.0-30.063-42.0-36.0139-98.0-7.0491.0-59.0118-71.0
Percentage of IncreaseDecreaseInOperatingCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInOtherCurrentAssets


Increase
Period End2020-12-31
Value-6.0
Percentage of IncreaseDecreaseInOtherCurrentAssets100.0

us-gaap:IncreaseDecreaseInReceivables

us-gaap:IncreaseDecreaseInReceivables


Increase
Period End2020-12-31
Value28
Percentage of IncreaseDecreaseInReceivables100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2020-12-312019-12-312019-09-302019-06-30
Value9.0353835
Percentage of LeaseCost100.0100.0100.0100.0

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-107.0-89.0-125.0-32.0-277.0-1775.0-55.09712-72.036463-92.0-5.0-135.0-132.0-47.052
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-03-31
Value4.05.0-2.0-3.0-6.021123.00.0-5.018-3.0-10.0-3.03.0-1.0
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest-3.7-5.61.69.42.2-1.2-21.83.10.06.94.9-4.810.960.0-2.2-1.9

us-gaap:Parent


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-111.0-94.0-123.0-29.0-271.0-1796.0-67.09412-67.034666-82.0-2.0-138.0-133.0-48.053
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest103.7105.698.490.697.8101.2121.896.9100.093.195.1104.889.140.0102.2100.8102.1101.9

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-111.0-94.0-123.0-29.0-271.0-1796.0-67.09412-67.034666-82.0-2.0-138.0-133.0-48.053
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest103.7105.698.490.697.8101.2121.896.9100.093.195.1104.889.140.0102.2100.8102.1101.9

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable


Noncontrolling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.05.0-2.0-3.0-6.021123.00.0-5.018-3.0-10.0-3.0
Percentage of NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Noncontrolling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.06.0-21.0123.00.0-5.018-3.0-10.0-3.0
Percentage of NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable-100.0-100.0-100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable us-gaap:StatementEquityComponents, us-gaap:TypeOfArrangement

us-gaap:NoncontrollingInterest, crc:AresJointVenture


Noncontrolling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0-1.0-2.02.0-3.0-3.0-3.0-3.0-2.0-7.01.0
Percentage of NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable-0.016.7-9.516.7-100.00.060.0-16.766.770.0-33.3

us-gaap:NoncontrollingInterest, crc:BenefitStreetPartners


Noncontrolling
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2.03.07.0-19.010.06.03.0-2.021-1.0-3.0-4.0
Percentage of NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable100.0-100.0-116.7-90.583.3200.00.040.0116.733.330.0133.3

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersRedeemable

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersRedeemable


Noncontrolling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2530303030292828282914
Percentage of NoncontrollingInterestInNetIncomeLossJointVenturePartnersRedeemable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersRedeemable us-gaap:StatementClassOfStock

crc:MezzanineEquityRedeemableNoncontrollingInterest


Noncontrolling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-25.030-30.03030292828282914
Percentage of NoncontrollingInterestInNetIncomeLossJointVenturePartnersRedeemable-100.0100.0-100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersRedeemable us-gaap:StatementClassOfStock, us-gaap:TypeOfArrangement

crc:MezzanineEquityRedeemableNoncontrollingInterest, crc:AresJointVenture


Noncontrolling
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-25.0-31.0-30.0204-30.0-29.0-28.0
Percentage of NoncontrollingInterestInNetIncomeLossJointVenturePartnersRedeemable-100.0-103.3-100.0680.0-100.0-100.0-100.0

crc:MezzanineEquityRedeemableNoncontrollingInterest, crc:ElkHillsCarbon


Noncontrolling
Period End2020-09-302020-06-302020-03-312019-06-302019-03-31
Value0.01.00.00.00.0
Percentage of NoncontrollingInterestInNetIncomeLossJointVenturePartnersRedeemable0.03.30.00.00.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2020-12-312019-12-312019-09-302019-06-30
Value2.0121414
Percentage of OperatingLeaseCost100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2020-12-312019-12-312019-09-302019-06-30
Value2.05.04.02.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent us-gaap:RetirementPlanType

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Other
Period End2020-12-31
Value-7.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent100.0

us-gaap:PensionPlansDefinedBenefit


Other
Period End2020-12-31
Value-1.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent14.3

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax


Other
Period End2020-12-312015-12-312015-09-302015-06-302014-12-312014-09-302013-12-312013-09-30
Value-8.05.0-4.0-3.0-2.00.0241.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2020-12-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-09-302013-12-31
Value-8.0-18.00.01.0140.01.02.0-13.01.00.03.0-7.02.03.03.05.02.02.00.022
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.00.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2020-12-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-8.0-18.00.01.0140.01.02.0-13.01.00.03.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.00.0100.0100.00.0100.0100.0100.0100.00.0100.0

us-gaap:Parent


Other
Period End2020-12-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-8.0-18.00.01.0140.01.02.0-13.01.00.03.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.00.0100.0100.00.0100.0100.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax us-gaap:RetirementPlanType

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Other
Period End2020-12-31
Value7.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax100.0

us-gaap:PensionPlansDefinedBenefit


Other
Period End2020-12-31
Value1.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax14.3

us-gaap:OtherExpenses

us-gaap:OtherExpenses


Other
Period End2021-06-302020-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value9.07.0102232724983928423437
Percentage of OtherExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


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-22.0-7.0-27.0-47.0-14.0-8.0-71.0-13.0-21.0-26.0-19.0-39.0-25.0-14.0-31.0-29.0-2.0-15.0-48.0-203.0152-2.0-84.0-72.0-80.026
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNonoperatingExpense

us-gaap:OtherNonoperatingExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-06-30
Value2.01.05.0324714548.03.07.07.04.05.07.0-4.02.03.04.00.0
Percentage of OtherNonoperatingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:OtherOperatingIncomeExpenseNet


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-23.0-30.0-17.0-22.0-67.0-69.0-79.0-81.0-55.0-148.0-140.0-149.0-49.0-61.0-30.0-29.0-25.0-22.0-34.0-29.05166-94.0-23.0-27.0-24.0
Percentage of OtherOperatingIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1.0-1.00.03.04.05.02.03.02.02.01.02.01.01.00.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:PaymentsOfDebtExtinguishmentCosts

us-gaap:PaymentsOfDebtExtinguishmentCosts


Payments
Period End2021-06-302021-03-312019-12-312018-12-31
Value1.0120.00.0
Percentage of PaymentsOfDebtExtinguishmentCosts100.0100.00.00.0

us-gaap:PaymentsOfDividendsMinorityInterest

us-gaap:PaymentsOfDividendsMinorityInterest


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value17143027244436504520413923182.05.0
Percentage of PaymentsOfDividendsMinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.00.01.00.00.02.01.00.06.03.02.00.01.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation0.00.0100.00.00.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:PensionAndOtherPostretirementBenefitExpense us-gaap:RestructuringCostAndReserve

us-gaap:PensionAndOtherPostretirementBenefitExpense

crc:EmployeeNoticeAndSeverance


Pension
Period End2020-12-31
Value5000000.0
Percentage of PensionAndOtherPostretirementBenefitExpense100.0

us-gaap:ProceedsFromIssuanceOfDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ProceedsFromIssuanceOfDebt

crc:A7125UnsecuredDebtNotesDue2026, us-gaap:SeniorNotes


Proceeds
Period End2021-01-20
Value588
Percentage of ProceedsFromIssuanceOfDebt100.0

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

crc:A7125UnsecuredDebtNotesDue2026, us-gaap:SeniorNotes, us-gaap:SubsequentEvent


Proceeds
Period End2021-01-31
Value590
Percentage of ProceedsFromIssuanceOfDebt0.0

us-gaap:ProceedsFromIssuanceOfSecuredDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ProceedsFromIssuanceOfSecuredDebt

crc:SecondLienNotes, crc:LienNotes


Proceeds
Period End2020-10-27
Value200
Percentage of ProceedsFromIssuanceOfSecuredDebt100.0

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

crc:SecondLienNotes, crc:LienNotes, us-gaap:SubsequentEvent


Proceeds
Period End2020-10-27
Value200
Percentage of ProceedsFromIssuanceOfSecuredDebt100.0

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt

us-gaap:ProceedsFromIssuanceOfSeniorLongTermDebt


Proceeds
Period End2021-06-302021-03-31
Value0.0600
Percentage of ProceedsFromIssuanceOfSeniorLongTermDebt0.0100.0

us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProceedsFromLinesOfCredit


Proceeds
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
Value2.034644958147565961510016721069816962725072214571018382361690181407757
Percentage of ProceedsFromLinesOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromLinesOfCredit us-gaap:DebtInstrument

us-gaap:RevolvingCreditFacility


Proceeds
Period End2021-06-302021-03-312020-12-31
Value0.01682
Percentage of ProceedsFromLinesOfCredit0.00.00.0

us-gaap:ProceedsFromLongTermLinesOfCredit us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ProceedsFromLongTermLinesOfCredit

us-gaap:RevolvingCreditFacility, crc:JVPartner, us-gaap:LetterOfCredit


Proceeds
Period End2020-10-31
Value22
Percentage of ProceedsFromLongTermLinesOfCredit100.0

us-gaap:ProceedsFromLongTermLinesOfCredit us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Proceeds
Period End2020-10-27
Value225
Percentage of ProceedsFromLongTermLinesOfCredit0.0

us-gaap:ProceedsFromLongTermLinesOfCredit us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:RevolvingCreditFacility, us-gaap:LetterOfCredit, us-gaap:SubsequentEvent


Proceeds
Period End2020-10-27
Value118
Percentage of ProceedsFromLongTermLinesOfCredit0.0

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Proceeds
Period End2020-10-27
Value225
Percentage of ProceedsFromLongTermLinesOfCredit0.0

us-gaap:ProceedsFromMinorityShareholders

us-gaap:ProceedsFromMinorityShareholders


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-1.00.02.00.00.00.0490.00.0497470.0490.049
Percentage of ProceedsFromMinorityShareholders100.00.0100.00.00.00.0100.00.00.0100.0100.00.0100.00.0100.0

us-gaap:ProceedsFromSaleOfOilAndGasPropertyAndEquipment us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:ProceedsFromSaleOfOilAndGasPropertyAndEquipment

us-gaap:DisposalGroupHeldforsaleNotDiscontinuedOperations, crc:VenturaBasin


Proceeds
Period End2021-06-30
Value82
Percentage of ProceedsFromSaleOfOilAndGasPropertyAndEquipment100.0

us-gaap:ProceedsFromSaleOfProductiveAssets

us-gaap:ProceedsFromSaleOfProductiveAssets


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312020-01-312019-12-312019-09-302019-05-312019-05-012019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302016-12-312016-09-30
Value0.02.00.00.041410.0-1.01641651650.01.04.00.00.01.00.0
Percentage of ProceedsFromSaleOfProductiveAssets0.0100.00.00.0100.0100.00.0100.0100.0100.0100.00.0100.0100.00.00.0100.00.0

us-gaap:ProductionCosts

us-gaap:ProductionCosts


Production
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value169164114141127192211221230233233236231212227222216211217211188184221246242
Percentage of ProductionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReorganizationItems

us-gaap:ReorganizationItems


Reorganization
Period End2020-10-312020-09-30
Value9710.0
Percentage of ReorganizationItems100.0100.0

us-gaap:RepaymentsOfDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:RepaymentsOfDebt

crc:SecondLienTermLoanEHPNotesAndRevolvingCreditFacility, us-gaap:SeniorNotes


Repayments
Period End2021-01-20
Value588
Percentage of RepaymentsOfDebt100.0

us-gaap:RepaymentsOfDebt us-gaap:DebtInstrument, us-gaap:SubsequentEventType

crc:SecondLienTermLoanFHPNotesAndRevolvingCreditFacility, us-gaap:SubsequentEvent


Repayments
Period End2021-01-31
Value590
Percentage of RepaymentsOfDebt0.0

us-gaap:RepaymentsOfLinesOfCredit

us-gaap:RepaymentsOfLinesOfCredit


Repayments
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
Value73312345957748771057980360779244411702774342993821027296405432290387547
Percentage of RepaymentsOfLinesOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfLinesOfCredit us-gaap:DebtInstrument

us-gaap:RevolvingCreditFacility


Repayments
Period End2021-06-302021-03-312020-12-31
Value0.0115208
Percentage of RepaymentsOfLinesOfCredit0.00.00.0

us-gaap:RepaymentsOfSeniorDebt

us-gaap:RepaymentsOfSeniorDebt


Repayments
Period End2020-09-302020-06-302020-03-312019-06-302019-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.00.01000.00.0559252541212683625
Percentage of RepaymentsOfSeniorDebt0.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfSeniorDebt us-gaap:DebtInstrument

crc:EHPNotes


Repayments
Period End2021-06-302021-03-31
Value0.0300
Percentage of RepaymentsOfSeniorDebt0.00.0

crc:SecondLienNotes


Repayments
Period End2021-06-302021-03-31
Value0.0200
Percentage of RepaymentsOfSeniorDebt0.00.0

us-gaap:RepaymentsOfSubordinatedDebt

us-gaap:RepaymentsOfSubordinatedDebt


Repayments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.00.03.07.090451450301172.0920.00.0240.07570.013
Percentage of RepaymentsOfSubordinatedDebt0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0100.00.0100.0

us-gaap:RestructuringCharges us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringCharges

crc:OrganizationChanges


Restructuring
Period End2021-03-31
Value14
Percentage of RestructuringCharges100.0

us-gaap:RevenueNotFromContractWithCustomer

us-gaap:RevenueNotFromContractWithCustomer


Revenue
Period End2020-12-312020-09-302019-12-312019-09-30
Value569788103
Percentage of RevenueNotFromContractWithCustomer100.0100.0100.0100.0

us-gaap:RevenueNotFromContractWithCustomer us-gaap:ProductOrService

crc:Interest


Revenue
Period End2020-12-31
Value3.0
Percentage of RevenueNotFromContractWithCustomer5.4

crc:MarketingAndTrading


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4898385014455662
Percentage of RevenueNotFromContractWithCustomer0.00.067.951.50.00.063.660.2

crc:MarketingAndTradingRevenue


Revenue
Period End2020-09-302019-09-30
Value5062
Percentage of RevenueNotFromContractWithCustomer51.560.2

crc:MarketingTradingandOther


Revenue
Period End2020-12-31
Value38
Percentage of RevenueNotFromContractWithCustomer67.9

crc:SaleOfElectricity


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
Value33331543191324381634244221
Percentage of RevenueNotFromContractWithCustomer0.00.026.844.30.00.027.336.90.00.00.00.00.0

us-gaap:ProductAndServiceOther


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value10.0133.04.02.06.08.03.0
Percentage of RevenueNotFromContractWithCustomer0.00.05.44.10.00.09.12.9

us-gaap:SeveranceCosts1

us-gaap:SeveranceCosts1


Severance
Period End2021-06-30
Value1.0
Percentage of SeveranceCosts1100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

crc:PerformanceStockUnits


Share
Period End2021-06-302021-03-31
Value12000.09000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-31
Value27000.09000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod225.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

crc:PerformanceStockUnits


Share
Period End2021-06-302021-03-31
Value019.31
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue0.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-31
Value024.5
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue0.0126.9

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

crc:PerformanceStockUnits


Share
Period End2021-06-302021-03-31
Value0.2519.47
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-31
Value0.2924.45
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue116.0125.6

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate us-gaap:Range, us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

srt:Maximum, crc:PerformanceStockUnits


Share
Period End2021-06-302021-03-31
Value0.170.32
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.0100.0

srt:Minimum, crc:PerformanceStockUnits


Share
Period End2021-06-302021-03-31
Value0.160.17
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate94.153.1

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate

crc:PerformanceStockUnits


Share
Period End2021-03-31
Value65.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate us-gaap:Range, us-gaap:AwardType

srt:Maximum, crc:PerformanceStockUnits


Share
Period End2021-06-30
Value65.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate0.0

srt:Minimum, crc:PerformanceStockUnits


Share
Period End2021-06-30
Value60.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate0.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:RestrictedStockUnitsRSU


Sharebased
Period End2021-06-302021-03-31
Value033.33
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.0

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


Short
Period End2020-12-312019-12-312019-09-302019-06-30
Value7.0181818
Percentage of ShortTermLeaseCost100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesNewIssues us-gaap:StatementClassOfStock

us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:CommonStock


Stock
Period End2020-10-31
Value83
Percentage of StockIssuedDuringPeriodSharesNewIssues100.0

us-gaap:TaxesExcludingIncomeAndExciseTaxes

us-gaap:TaxesExcludingIncomeAndExciseTaxes


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value374010.04238413842364129453738333931332637423930425355545655524432
Percentage of TaxesExcludingIncomeAndExciseTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2021-06-30
Value45
Percentage of TreasuryStockValueAcquiredCostMethod100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:Parent


Treasury
Period End2021-06-30
Value45
Percentage of TreasuryStockValueAcquiredCostMethod100.0

us-gaap:TreasuryStock


Treasury
Period End2021-06-30
Value45
Percentage of TreasuryStockValueAcquiredCostMethod100.0

us-gaap:UnrealizedGainLossOnDerivatives

us-gaap:UnrealizedGainLossOnDerivatives


Unrealized
Period End2020-12-312016-03-312015-03-31
Value-140.0-81.0-3.0
Percentage of UnrealizedGainLossOnDerivatives100.0100.0100.0

crc:CommitmentsToInvestForEvaluationAndDevelopmentRemaining us-gaap:BusinessAcquisition

crc:CommitmentsToInvestForEvaluationAndDevelopmentRemaining

crc:OtherOilAndGasProperty


Commitments
Period End2020-12-31
Value12
Percentage of CommitmentsToInvestForEvaluationAndDevelopmentRemaining100.0

crc:ContractualObligationIncludingUndiscountedExcessAmount us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

crc:ContractualObligationIncludingUndiscountedExcessAmount

crc:LongTermPurchaseAndContractualObligation


Contractual
Period End2020-12-31
Value186
Percentage of ContractualObligationIncludingUndiscountedExcessAmount100.0

crc:ContractualObligationUndiscountedExcessAmount us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

crc:ContractualObligationUndiscountedExcessAmount

crc:LongTermPurchaseAndContractualObligation


Contractual
Period End2020-12-31
Value28
Percentage of ContractualObligationUndiscountedExcessAmount100.0

crc:DebtInstrumentCarryingAmountNoncurrent

crc:DebtInstrumentCarryingAmountNoncurrent


Debt
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value5974860487748965060516952515108507549415306503950695021516851736043
Percentage of DebtInstrumentCarryingAmountNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

crc:DebtInstrumentCovenantTermsIncreaseInCommitmentThreshold us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

crc:DebtInstrumentCovenantTermsIncreaseInCommitmentThreshold

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Debt
Period End2020-10-27
Value60
Percentage of DebtInstrumentCovenantTermsIncreaseInCommitmentThreshold100.0

crc:DebtInstrumentCovenantTermsIncreaseInCommitmentThreshold us-gaap:DebtInstrument, us-gaap:LongtermDebtType

crc:SecondLienNotes, us-gaap:LineOfCredit


Debt
Period End2020-10-27
Value51
Percentage of DebtInstrumentCovenantTermsIncreaseInCommitmentThreshold85.0

crc:DebtInstrumentCovenantTermsLiquidityThreshold us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

crc:DebtInstrumentCovenantTermsLiquidityThreshold

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Debt
Period End2020-10-27
Value290
Percentage of DebtInstrumentCovenantTermsLiquidityThreshold100.0

crc:DebtInstrumentCovenantTermsLiquidityThreshold us-gaap:DebtInstrument, us-gaap:LongtermDebtType

crc:SecondLienNotes, us-gaap:LineOfCredit


Debt
Period End2020-10-27
Value247
Percentage of DebtInstrumentCovenantTermsLiquidityThreshold85.2

crc:DebtInstrumentCovenantTermsMinimumMonthlyLiquidity us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

crc:DebtInstrumentCovenantTermsMinimumMonthlyLiquidity

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Debt
Period End2020-10-27
Value200
Percentage of DebtInstrumentCovenantTermsMinimumMonthlyLiquidity100.0

crc:DebtInstrumentCovenantTermsMinimumMonthlyLiquidity us-gaap:DebtInstrument, us-gaap:LongtermDebtType

crc:SecondLienNotes, us-gaap:LineOfCredit


Debt
Period End2020-10-27
Value170
Percentage of DebtInstrumentCovenantTermsMinimumMonthlyLiquidity85.0

crc:DebtInstrumentFloorInterestRate crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType

crc:DebtInstrumentFloorInterestRate

crc:DerivativeInstrumentPeriodThree, us-gaap:RevolvingCreditFacility, us-gaap:EnergyRelatedDerivative, us-gaap:LineOfCredit


Debt
Period End2021-05-07
Value100.0
Percentage of DebtInstrumentFloorInterestRate100.0

crc:DebtInstrumentFloorInterestRate crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

crc:DerivativeInstrumentPeriodThree, us-gaap:RevolvingCreditFacility, us-gaap:EnergyRelatedDerivative, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Debt
Period End2021-05-07
Value100.0
Percentage of DebtInstrumentFloorInterestRate100.0

crc:DebtorInPossessionFinancingUpfrontCommitmentFees us-gaap:CreditFacility, us-gaap:DebtInstrument

crc:DebtorInPossessionFinancingUpfrontCommitmentFees

us-gaap:LineOfCredit, crc:JuniorDebtorInPossessionCreditAgreement


Debtor
Period End2020-09-30
Value1.0
Percentage of DebtorInPossessionFinancingUpfrontCommitmentFees100.0

crc:DebtorReorganizationItemsDebtorInPossessionFacilityPrincipalAmount us-gaap:DebtInstrument, us-gaap:SubsequentEventType

crc:DebtorReorganizationItemsDebtorInPossessionFacilityPrincipalAmount

crc:SeniorDebtorInPossession, us-gaap:SubsequentEvent


Debtor
Period End2020-07-15
Value483
Percentage of DebtorReorganizationItemsDebtorInPossessionFacilityPrincipalAmount100.0

crc:TermLoan, us-gaap:SubsequentEvent


Debtor
Period End2020-07-15
Value650
Percentage of DebtorReorganizationItemsDebtorInPossessionFacilityPrincipalAmount134.6

crc:DebtorReorganizationItemsLegalAndAdvisoryProfessionalFeesReserved

crc:DebtorReorganizationItemsLegalAndAdvisoryProfessionalFeesReserved


Debtor
Period End2020-10-31
Value18
Percentage of DebtorReorganizationItemsLegalAndAdvisoryProfessionalFeesReserved100.0

crc:DebtorReorganizationItemsRestrictedCash us-gaap:CreditFacility, us-gaap:LongtermDebtType

crc:DebtorReorganizationItemsRestrictedCash

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Debtor
Period End2020-10-31
Value158
Percentage of DebtorReorganizationItemsRestrictedCash100.0

crc:DebtorReorganizationItemsRestrictedCashAndCashEquivalents us-gaap:CreditFacility, us-gaap:LongtermDebtType

crc:DebtorReorganizationItemsRestrictedCashAndCashEquivalents

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Debtor
Period End2020-10-31
Value203
Percentage of DebtorReorganizationItemsRestrictedCashAndCashEquivalents100.0

crc:DeferredTaxAssetsLongTermDebt

crc:DeferredTaxAssetsLongTermDebt


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value3.0176253324693608
Percentage of DeferredTaxAssetsLongTermDebt100.0100.0100.0100.0100.0100.0

crc:DerivativeAllocationPercent crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType

crc:DerivativeAllocationPercent

crc:DerivativeInstrumentPeriodOne, us-gaap:RevolvingCreditFacility, us-gaap:EnergyRelatedDerivative, us-gaap:LineOfCredit


Derivative
Period End2021-05-072020-10-27
Value33.050.0
Percentage of DerivativeAllocationPercent100.0100.0

crc:DerivativeAllocationPercent crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

crc:DerivativeInstrumentPeriodOne, us-gaap:RevolvingCreditFacility, us-gaap:EnergyRelatedDerivative, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Derivative
Period End2021-05-07
Value33.0
Percentage of DerivativeAllocationPercent100.0

crc:DerivativeAllocationPercent us-gaap:DerivativeInstrumentRisk

us-gaap:EnergyRelatedDerivative


Derivative
Period End2020-09-30
Value25.0
Percentage of DerivativeAllocationPercent0.0

crc:DerivativeTermsHedgingPercent crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType

crc:DerivativeTermsHedgingPercent

crc:DerivativeInstrumentPeriodThree, us-gaap:RevolvingCreditFacility, us-gaap:EnergyRelatedDerivative, us-gaap:LineOfCredit


Derivative
Period End2021-05-07
Value85.0
Percentage of DerivativeTermsHedgingPercent100.0

crc:DerivativeTermsHedgingPercent crc:DerivativeInstrumentPeriod, us-gaap:CreditFacility, us-gaap:DerivativeInstrumentRisk, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

crc:DerivativeInstrumentPeriodThree, us-gaap:RevolvingCreditFacility, us-gaap:EnergyRelatedDerivative, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Derivative
Period End2021-05-07
Value85.0
Percentage of DerivativeTermsHedgingPercent100.0

crc:FreshStartAdjustmentIncreaseDecreaseLongTermDebtLeaseLiability

crc:FreshStartAdjustmentIncreaseDecreaseLongTermDebtLeaseLiability


Fresh
Period End2020-10-31
Value5000000.0
Percentage of FreshStartAdjustmentIncreaseDecreaseLongTermDebtLeaseLiability100.0

crc:FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentGross us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

crc:FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentGross

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value-20236000000.0
Percentage of FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentGross100.0

crc:FreshStartAdjustmentIncreaseDecreaseStockholdersEquityAttributableToNoncontrolling us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

crc:FreshStartAdjustmentIncreaseDecreaseStockholdersEquityAttributableToNoncontrolling

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value7000000.0
Percentage of FreshStartAdjustmentIncreaseDecreaseStockholdersEquityAttributableToNoncontrolling100.0

crc:FreshStartAdjustmentIncreaseDecreaseStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

crc:FreshStartAdjustmentIncreaseDecreaseStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value-1715000000.0
Percentage of FreshStartAdjustmentIncreaseDecreaseStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0

crc:FreshStartAdjustmentLongTermObligation

crc:FreshStartAdjustmentLongTermObligation


Fresh
Period End2020-10-31
Value8000000.0
Percentage of FreshStartAdjustmentLongTermObligation100.0

crc:FreshStartAdjustmentsFairValueAdjustmentToAssetRetirementObligationsCurrent

crc:FreshStartAdjustmentsFairValueAdjustmentToAssetRetirementObligationsCurrent


Fresh
Period End2020-10-31
Value20
Percentage of FreshStartAdjustmentsFairValueAdjustmentToAssetRetirementObligationsCurrent100.0

crc:FreshStartAdjustmentsFairValueAdjustmentToAssetRetirementObligationsNoncurrent

crc:FreshStartAdjustmentsFairValueAdjustmentToAssetRetirementObligationsNoncurrent


Fresh
Period End2020-10-31
Value36
Percentage of FreshStartAdjustmentsFairValueAdjustmentToAssetRetirementObligationsNoncurrent100.0

crc:JointVentureWorkingInterestRetainedInProperties dei:LegalEntity, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

crc:JointVentureWorkingInterestRetainedInProperties

crc:JointVentureWithMacquarieInfrastructureAndRealAssetsInc, crc:JointVentureWithMacquarieInfrastructureAndRealAssetsInc, us-gaap:SubsequentEvent


Joint
Period End2021-07-31
Value10.0
Percentage of JointVentureWorkingInterestRetainedInProperties100.0

crc:LeaseLiabilityCurrent

crc:LeaseLiabilityCurrent


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value8.010.07.011151928
Percentage of LeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0

crc:LeaseLiabilityNonCurrent

crc:LeaseLiabilityNonCurrent


Lease
Period End2021-03-312020-12-312019-12-31
Value343538
Percentage of LeaseLiabilityNonCurrent100.0100.0100.0

crc:LeaseLiabilityNoncurrent

crc:LeaseLiabilityNoncurrent


Lease
Period End2021-06-302020-12-31
Value3135
Percentage of LeaseLiabilityNoncurrent100.0100.0

crc:LeasesRightOfUseAsset

crc:LeasesRightOfUseAsset


Leases
Period End2021-03-312020-12-312020-09-302019-12-31
Value40394461
Percentage of LeasesRightOfUseAsset100.0100.0100.0100.0

crc:LineOfCreditFacilityBorrowingBase us-gaap:CreditFacility, us-gaap:LongtermDebtType

crc:LineOfCreditFacilityBorrowingBase

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Line
Period End2021-05-072021-04-30
Value12001167
Percentage of LineOfCreditFacilityBorrowingBase100.0100.0

crc:LineOfCreditFacilityBorrowingBase us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Line
Period End2021-05-072021-04-30
Value12001167
Percentage of LineOfCreditFacilityBorrowingBase100.0100.0

crc:LineOfCreditFacilityExpectedReductionOfCommitments us-gaap:CreditFacility, us-gaap:LongtermDebtType

crc:LineOfCreditFacilityExpectedReductionOfCommitments

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Line
Period End2020-10-27
Value492
Percentage of LineOfCreditFacilityExpectedReductionOfCommitments100.0

crc:LineOfCreditMinimumLiquidityOverAmount us-gaap:CreditFacility, us-gaap:DebtInstrument

crc:LineOfCreditMinimumLiquidityOverAmount

us-gaap:LineOfCredit, crc:SeniorDIPAndJuniorDIPCreditAgreements


Line
Period End2020-09-30
Value35
Percentage of LineOfCreditMinimumLiquidityOverAmount100.0

crc:LineOfCreditMinimumLiquidityOverRollingAmount us-gaap:CreditFacility, us-gaap:DebtInstrument

crc:LineOfCreditMinimumLiquidityOverRollingAmount

us-gaap:LineOfCredit, crc:SeniorDIPAndJuniorDIPCreditAgreements


Line
Period End2020-09-30
Value50
Percentage of LineOfCreditMinimumLiquidityOverRollingAmount100.0

crc:LongTermDebtAmountReclassified

crc:LongTermDebtAmountReclassified


Long
Period End2020-09-30
Value4352
Percentage of LongTermDebtAmountReclassified100.0

crc:OffshorePlatformsWithDecommissioningObligationsDefaultedOwnershipPercent

crc:OffshorePlatformsWithDecommissioningObligationsDefaultedOwnershipPercent


Offshore
Period End2020-10-31
Value35.0
Percentage of OffshorePlatformsWithDecommissioningObligationsDefaultedOwnershipPercent100.0

crc:PercentageOfDebtHedgedByPriceRiskDerivatives us-gaap:CreditFacility, us-gaap:DebtInstrument

crc:PercentageOfDebtHedgedByPriceRiskDerivatives

us-gaap:LineOfCredit, crc:SeniorDIPAndJuniorDIPCreditAgreements


Percentage
Period End2020-09-30
Value25.0
Percentage of PercentageOfDebtHedgedByPriceRiskDerivatives100.0

crc:PlanOfReorganizationCommonStockCapitalSharesReservedForFutureIssuance

crc:PlanOfReorganizationCommonStockCapitalSharesReservedForFutureIssuance


Plan
Period End2020-12-312020-10-27
Value9300000.04400000.0
Percentage of PlanOfReorganizationCommonStockCapitalSharesReservedForFutureIssuance100.0100.0

crc:PlanOfReorganizationCommonStockCapitalSharesReservedForFutureIssuance us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value4400000.0
Percentage of PlanOfReorganizationCommonStockCapitalSharesReservedForFutureIssuance100.0

crc:PlanOfReorganizationCommonStockCapitalSharesReservedForIssuanceOfIncentivePlan

crc:PlanOfReorganizationCommonStockCapitalSharesReservedForIssuanceOfIncentivePlan


Plan
Period End2020-10-27
Value9300000.0
Percentage of PlanOfReorganizationCommonStockCapitalSharesReservedForIssuanceOfIncentivePlan100.0

crc:PlanOfReorganizationCommonStockPricePerShare us-gaap:ClassOfWarrantOrRight

crc:PlanOfReorganizationCommonStockPricePerShare

crc:SubscriptionRights


Plan
Period End2020-10-27
Value13.0
Percentage of PlanOfReorganizationCommonStockPricePerShare100.0

crc:PlanOfReorganizationCommonStockSharesNewIssues us-gaap:ClassOfWarrantOrRight

crc:PlanOfReorganizationCommonStockSharesNewIssues

crc:SubscriptionRightBackstopCommitmentAgreement


Plan
Period End2020-10-27
Value3.5
Percentage of PlanOfReorganizationCommonStockSharesNewIssues100.0

crc:SubscriptionRights


Plan
Period End2020-10-27
Value34
Percentage of PlanOfReorganizationCommonStockSharesNewIssues988.6

crc:PlanOfReorganizationCommonStockSharesNewIssues us-gaap:ClassOfWarrantOrRight, us-gaap:DebtInstrument

crc:RightsOffering, crc:BackstopCommitmentAgreement


Plan
Period End2020-07-15
Value38
Percentage of PlanOfReorganizationCommonStockSharesNewIssues0.0

crc:SubscriptionRightBackstopCommitmentAgreement, crc:BackstopCommitmentAgreement


Plan
Period End2020-07-15
Value3.5
Percentage of PlanOfReorganizationCommonStockSharesNewIssues0.0

crc:PlanOfReorganizationCommonStockSharesNewIssues us-gaap:ClassOfWarrantOrRight, us-gaap:SubsequentEventType

crc:SubscriptionRightBackstopCommitmentAgreement, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value3.5
Percentage of PlanOfReorganizationCommonStockSharesNewIssues100.0

crc:SubscriptionRights, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value34
Percentage of PlanOfReorganizationCommonStockSharesNewIssues988.6

crc:SubscriptionRightsBackstopParties, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value1.6
Percentage of PlanOfReorganizationCommonStockSharesNewIssues45.7

crc:SubscriptionRightsExcludingBackstopParties, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value33
Percentage of PlanOfReorganizationCommonStockSharesNewIssues942.9

crc:PlanOfReorganizationCommonStockSharesNewIssues us-gaap:CounterpartyName

crc:AresJointVenture


Plan
Period End2020-10-27
Value17
Percentage of PlanOfReorganizationCommonStockSharesNewIssues494.3

crc:PlanOfReorganizationCommonStockSharesNewIssues us-gaap:CounterpartyName, us-gaap:SubsequentEventType

crc:AresJointVenture, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value17
Percentage of PlanOfReorganizationCommonStockSharesNewIssues494.3

crc:PrePetitionCreditorGroup, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value27
Percentage of PlanOfReorganizationCommonStockSharesNewIssues774.3

crc:PlanOfReorganizationCommonStockSharesNewIssues us-gaap:CreditFacility

crc:A2016CreditAgreementSecondLienNotes2021NotesAnd2024Notes


Plan
Period End2020-10-27
Value4.4
Percentage of PlanOfReorganizationCommonStockSharesNewIssues125.7

crc:A2017CreditAgreement


Plan
Period End2020-10-27
Value22
Percentage of PlanOfReorganizationCommonStockSharesNewIssues648.6

crc:PlanOfReorganizationCommonStockSharesNewIssues us-gaap:CreditFacility, us-gaap:SubsequentEventType

crc:A2016CreditAgreementSecondLienNotes2021NotesAnd2024Notes, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value4.4
Percentage of PlanOfReorganizationCommonStockSharesNewIssues125.7

crc:A2017CreditAgreement, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value22
Percentage of PlanOfReorganizationCommonStockSharesNewIssues648.6

crc:PlanOfReorganizationCommonStockSharesNewIssues us-gaap:DebtInstrument

crc:JuniorDebtorInPossessionCreditAgreement


Plan
Period End2020-10-27
Value0.821
Percentage of PlanOfReorganizationCommonStockSharesNewIssues23.5

crc:PlanOfReorganizationCommonStockSharesNewIssues us-gaap:DebtInstrument, us-gaap:SubsequentEventType

crc:JuniorDebtorInPossessionCreditAgreement, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value0.821
Percentage of PlanOfReorganizationCommonStockSharesNewIssues23.5

crc:PlanOfReorganizationCommonStockSharesNewIssues us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value83
Percentage of PlanOfReorganizationCommonStockSharesNewIssues2380.0

crc:PlanOfReorganizationExercisablePercentage us-gaap:ClassOfWarrantOrRight

crc:PlanOfReorganizationExercisablePercentage

crc:Tier1Warrants


Plan
Period End2020-10-27
Value2.0
Percentage of PlanOfReorganizationExercisablePercentage100.0

crc:Tier2Warrants


Plan
Period End2020-10-27
Value3.0
Percentage of PlanOfReorganizationExercisablePercentage150.0

crc:PlanOfReorganizationExercisablePercentage us-gaap:ClassOfWarrantOrRight, us-gaap:SubsequentEventType

crc:Tier1Warrants, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value2.0
Percentage of PlanOfReorganizationExercisablePercentage100.0

crc:Tier2Warrants, us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value3.0
Percentage of PlanOfReorganizationExercisablePercentage150.0

crc:PlanOfReorganizationExercisePriceOfWarrantsOrRights

crc:PlanOfReorganizationExercisePriceOfWarrantsOrRights


Plan
Period End2020-10-27
Value36.0
Percentage of PlanOfReorganizationExercisePriceOfWarrantsOrRights100.0

crc:PlanOfReorganizationExercisePriceOfWarrantsOrRights us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Plan
Period End2020-10-27
Value36.0
Percentage of PlanOfReorganizationExercisePriceOfWarrantsOrRights100.0

crc:PostconfirmationCurrentLiabilitiesExcludesAssetRetirementLiability

crc:PostconfirmationCurrentLiabilitiesExcludesAssetRetirementLiability


Postconfirmation
Period End2020-10-27
Value50
Percentage of PostconfirmationCurrentLiabilitiesExcludesAssetRetirementLiability100.0

crc:PostconfirmationCurrentLiabilitiesExcludingAssetRetirementObligations

crc:PostconfirmationCurrentLiabilitiesExcludingAssetRetirementObligations


Postconfirmation
Period End2020-10-31
Value396
Percentage of PostconfirmationCurrentLiabilitiesExcludingAssetRetirementObligations100.0

crc:PostconfirmationFairValueOfAssetRetirementObligations

crc:PostconfirmationFairValueOfAssetRetirementObligations


Postconfirmation
Period End2020-12-31
Value593
Percentage of PostconfirmationFairValueOfAssetRetirementObligations100.0

crc:PostconfirmationLessUnrestrictedCashCurrent

crc:PostconfirmationLessUnrestrictedCashCurrent


Postconfirmation
Period End2020-12-31
Value163
Percentage of PostconfirmationLessUnrestrictedCashCurrent100.0

crc:PostconfirmationOtherLongTermLiabilitiesExcludesAssetRetirementLiability

crc:PostconfirmationOtherLongTermLiabilitiesExcludesAssetRetirementLiability


Postconfirmation
Period End2020-10-27
Value543
Percentage of PostconfirmationOtherLongTermLiabilitiesExcludesAssetRetirementLiability100.0

crc:PostconfirmationPropertyAndEquipmentGross

crc:PostconfirmationPropertyAndEquipmentGross


Postconfirmation
Period End2020-10-31
Value2682
Percentage of PostconfirmationPropertyAndEquipmentGross100.0

crc:PostconfirmationStockholdersStockholdersEquityAttributableToNoncontrolling

crc:PostconfirmationStockholdersStockholdersEquityAttributableToNoncontrolling


Postconfirmation
Period End2020-10-31
Value76
Percentage of PostconfirmationStockholdersStockholdersEquityAttributableToNoncontrolling100.0

crc:PostconfirmationUnrestrictedCashCurrent

crc:PostconfirmationUnrestrictedCashCurrent


Postconfirmation
Period End2020-10-31
Value163
Percentage of PostconfirmationUnrestrictedCashCurrent100.0

crc:PostconfirmationWarrants

crc:PostconfirmationWarrants


Postconfirmation
Period End2020-10-31
Value15
Percentage of PostconfirmationWarrants100.0

crc:PreconfirmationOtherAssetsCurrent

crc:PreconfirmationOtherAssetsCurrent


Preconfirmation
Period End2020-10-31
Value104
Percentage of PreconfirmationOtherAssetsCurrent100.0

crc:PreconfirmationOtherAssetsCurrent us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value-2.0
Percentage of PreconfirmationOtherAssetsCurrent-1.9

crc:PreconfirmationPropertyAndEquipmentGross

crc:PreconfirmationPropertyAndEquipmentGross


Preconfirmation
Period End2020-10-31
Value22918
Percentage of PreconfirmationPropertyAndEquipmentGross100.0

crc:PreconfirmationRedeemableNoncontrollingInterestEquityCarryingAmount

crc:PreconfirmationRedeemableNoncontrollingInterestEquityCarryingAmount


Preconfirmation
Period End2020-10-31
Value691
Percentage of PreconfirmationRedeemableNoncontrollingInterestEquityCarryingAmount100.0

crc:PreconfirmationRedeemableNoncontrollingInterestEquityCarryingAmount us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value-691.0
Percentage of PreconfirmationRedeemableNoncontrollingInterestEquityCarryingAmount-100.0

crc:PreconfirmationStockholdersEquityAttributableToNoncontrolling

crc:PreconfirmationStockholdersEquityAttributableToNoncontrolling


Preconfirmation
Period End2020-10-31
Value69
Percentage of PreconfirmationStockholdersEquityAttributableToNoncontrolling100.0

crc:PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

crc:PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Preconfirmation
Period End2020-10-31
Value-2286.0
Percentage of PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0

crc:PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value5346
Percentage of PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-233.9

crc:PremiumsReceivedOnDerivativeContractsCurrent

crc:PremiumsReceivedOnDerivativeContractsCurrent


Premiums
Period End2021-06-302020-12-31
Value2818
Percentage of PremiumsReceivedOnDerivativeContractsCurrent100.0100.0

crc:PremiumsReceivedOnDerivativeContractsNoncurrent

crc:PremiumsReceivedOnDerivativeContractsNoncurrent


Premiums
Period End2021-06-302020-12-31
Value1631
Percentage of PremiumsReceivedOnDerivativeContractsNoncurrent100.0100.0

crc:ReorganizationValueOther

crc:ReorganizationValueOther


Reorganization
Period End2020-10-31
Value2000000.0
Percentage of ReorganizationValueOther100.0

crc:SupplementalRetirementPlanSupplementalRetirementPlanAccruedLiabilities

crc:SupplementalRetirementPlanSupplementalRetirementPlanAccruedLiabilities


Supplemental
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3537363231322717
Percentage of SupplementalRetirementPlanSupplementalRetirementPlanAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

crc:TotalLeaseLiability

crc:TotalLeaseLiability


Total
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value444242485566
Percentage of TotalLeaseLiability100.0100.0100.0100.0100.0100.0

crc:UnrestrictedCash

crc:UnrestrictedCash


Unrestricted
Period End2020-12-312020-03-312019-12-31
Value286714
Percentage of UnrestrictedCash100.0100.0100.0

crc:UnrestrictedCash us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Unrestricted
Period End2020-10-27
Value72
Percentage of UnrestrictedCash0.0

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent

us-gaap:AccrualForTaxesOtherThanIncomeTaxesCurrent


Accrual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value314436649464575733513865111130
Percentage of AccrualForTaxesOtherThanIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedPayrollTaxesCurrent

us-gaap:AccruedPayrollTaxesCurrent


Accrued
Period End2020-12-31
Value5000000.0
Percentage of AccruedPayrollTaxesCurrent100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax


Accumulated
Period End2020-10-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value23236.0-23.014152423
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value7.017-4.010.0
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax0.073.9-66.7-43.5

us-gaap:PensionPlansDefinedBenefit


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.06.010.013
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax0.026.1166.7-56.5

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligation


Asset
Period End2020-12-312020-10-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value597593517433422411357419415387
Percentage of AssetRetirementObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationCurrent

us-gaap:AssetRetirementObligationCurrent


Asset
Period End2021-06-302021-03-312020-12-312020-10-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value49505050282828283131323119
Percentage of AssetRetirementObligationCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:AssetRetirementObligationsNoncurrent


Asset
Period End2021-06-302021-03-312020-12-312020-10-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value448546547543489402403397343397396394397380388
Percentage of AssetRetirementObligationsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationsNoncurrent us-gaap:BalanceSheetLocation

us-gaap:OtherNoncurrentLiabilities


Asset
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value507499495489480479490402417417407403410406402397332330344343
Percentage of AssetRetirementObligationsNoncurrent0.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent


Assets
Period End2021-06-30
Value50
Percentage of AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent100.0

us-gaap:CapitalizedExploratoryWellCosts

us-gaap:CapitalizedExploratoryWellCosts


Capitalized
Period End2020-12-312020-10-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3.03.07.05.04.04.06.04.0181863
Percentage of CapitalizedExploratoryWellCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashAndCashEquivalentsFairValueDisclosure


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6000000.001000000.03000000.03000000.0
Percentage of CashAndCashEquivalentsFairValueDisclosure100.00.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6000000.001000000.03000000.03000000.0
Percentage of CashAndCashEquivalentsFairValueDisclosure100.00.0100.0100.0100.0

us-gaap:ContractualObligation

us-gaap:ContractualObligation


Contractual
Period End2021-04-30
Value12
Percentage of ContractualObligation100.0

us-gaap:ContractualObligation us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

crc:LongTermPurchaseAndContractualObligation


Contractual
Period End2020-12-31
Value158
Percentage of ContractualObligation0.0

us-gaap:ContractualObligationDueAfterFifthYear us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

us-gaap:ContractualObligationDueAfterFifthYear

crc:LongTermPurchaseAndContractualObligation


Contractual
Period End2020-12-31
Value47
Percentage of ContractualObligationDueAfterFifthYear100.0

us-gaap:ContractualObligationDueInFifthYear us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

us-gaap:ContractualObligationDueInFifthYear

crc:LongTermPurchaseAndContractualObligation


Contractual
Period End2020-12-31
Value6000000.0
Percentage of ContractualObligationDueInFifthYear100.0

us-gaap:ContractualObligationDueInFourthYear us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

us-gaap:ContractualObligationDueInFourthYear

crc:LongTermPurchaseAndContractualObligation


Contractual
Period End2020-12-31
Value6000000.0
Percentage of ContractualObligationDueInFourthYear100.0

us-gaap:ContractualObligationDueInNextTwelveMonths us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

us-gaap:ContractualObligationDueInNextTwelveMonths

crc:LongTermPurchaseAndContractualObligation


Contractual
Period End2020-12-31
Value42
Percentage of ContractualObligationDueInNextTwelveMonths100.0

us-gaap:ContractualObligationDueInSecondYear us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

us-gaap:ContractualObligationDueInSecondYear

crc:LongTermPurchaseAndContractualObligation


Contractual
Period End2020-12-31
Value50
Percentage of ContractualObligationDueInSecondYear100.0

us-gaap:ContractualObligationDueInThirdYear us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

us-gaap:ContractualObligationDueInThirdYear

crc:LongTermPurchaseAndContractualObligation


Contractual
Period End2020-12-31
Value35
Percentage of ContractualObligationDueInThirdYear100.0

us-gaap:DebtInstrumentCarryingAmount

us-gaap:DebtInstrumentCarryingAmount


Debt
Period End2021-06-302021-03-312020-12-312020-10-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-05-312014-12-31
Value600600599725510049004977499651605269525151085075494153065139516951215268524759006000610068006400
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Debt
Period End2020-12-312020-10-31
Value99225
Percentage of DebtInstrumentCarryingAmount16.531.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument

crc:DebtPriorToBankruptcy


Debt
Period End2020-09-30
Value5100
Percentage of DebtInstrumentCarryingAmount0.0

crc:EHPNotes


Debt
Period End2020-12-31
Value300
Percentage of DebtInstrumentCarryingAmount50.1

us-gaap:DebtInstrumentCarryingAmount us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Debt
Period End2020-09-30
Value4400
Percentage of DebtInstrumentCarryingAmount0.0

us-gaap:DebtInstrumentFaceAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentFaceAmount

crc:A7125UnsecuredDebtNotesDue2026, us-gaap:SeniorNotes


Debt
Period End2021-01-20
Value600
Percentage of DebtInstrumentFaceAmount100.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet


Debt
Period End2021-06-302021-03-312020-12-312020-10-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value11122.02.051586572829097104128
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtorInPossessionFinancingAmountArranged

us-gaap:DebtorInPossessionFinancingAmountArranged


Debtor
Period End2020-12-31
Value2500
Percentage of DebtorInPossessionFinancingAmountArranged100.0

us-gaap:DebtorInPossessionFinancingAmountArranged us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:LineOfCredit, crc:JuniorDebtorInPossessionCreditAgreement


Debtor
Period End2020-07-23
Value650
Percentage of DebtorInPossessionFinancingAmountArranged0.0

us-gaap:LineOfCredit, crc:SeniorDebtorInPossessionFacility


Debtor
Period End2020-07-23
Value483
Percentage of DebtorInPossessionFinancingAmountArranged0.0

us-gaap:DebtorInPossessionFinancingAmountArranged us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LineOfCredit, crc:SeniorDebtorInPossessionFacility, crc:AdditionalLettersOfCredit


Debtor
Period End2020-07-23
Value35
Percentage of DebtorInPossessionFinancingAmountArranged0.0

us-gaap:LineOfCredit, crc:SeniorDebtorInPossessionFacility, us-gaap:LetterOfCredit


Debtor
Period End2020-07-23
Value150
Percentage of DebtorInPossessionFinancingAmountArranged0.0

us-gaap:LineOfCredit, crc:SeniorDebtorInPossessionFacility, us-gaap:RevolvingCreditFacility


Debtor
Period End2020-07-23
Value250
Percentage of DebtorInPossessionFinancingAmountArranged0.0

us-gaap:DebtorInPossessionFinancingAmountArranged us-gaap:DebtInstrument, us-gaap:SubsequentEventType

crc:JuniorDebtorInPossessionFacility, us-gaap:SubsequentEvent


Debtor
Period End2020-07-23
Value650
Percentage of DebtorInPossessionFinancingAmountArranged0.0

us-gaap:DebtorInPossessionFinancingAmountArranged us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Debtor
Period End2020-07-23
Value483
Percentage of DebtorInPossessionFinancingAmountArranged0.0

us-gaap:DebtorInPossessionFinancingBorrowingsOutstanding us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:DebtorInPossessionFinancingBorrowingsOutstanding

crc:DebtorInPossessionRevolvingFacility, us-gaap:SubsequentEvent


Debtor
Period End2020-07-23
Value250
Percentage of DebtorInPossessionFinancingBorrowingsOutstanding100.0

us-gaap:DebtorInPossessionFinancingBorrowingsOutstanding us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Debtor
Period End2020-07-23
Value83
Percentage of DebtorInPossessionFinancingBorrowingsOutstanding33.2

us-gaap:DebtorInPossessionFinancingInterestRateOnBorrowingsOutstanding us-gaap:Range

us-gaap:DebtorInPossessionFinancingInterestRateOnBorrowingsOutstanding

srt:Maximum


Debtor
Period End2020-12-31
Value5.0
Percentage of DebtorInPossessionFinancingInterestRateOnBorrowingsOutstanding100.0

srt:Minimum


Debtor
Period End2020-12-31
Value4.0
Percentage of DebtorInPossessionFinancingInterestRateOnBorrowingsOutstanding80.0

us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent

us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312019-12-31
Value181180184182
Percentage of DeferredCompensationLiabilityCurrentAndNoncurrent100.0100.0100.0100.0

us-gaap:DeferredFinanceCostsNet us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DeferredFinanceCostsNet

crc:A7125UnsecuredDebtNotesDue2026, us-gaap:SeniorNotes


Deferred
Period End2021-01-20
Value12
Percentage of DeferredFinanceCostsNet100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1335773573023754542438
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetInterestCarryforward

us-gaap:DeferredTaxAssetInterestCarryforward


Deferred
Period End2020-12-312019-12-312018-12-31
Value18019482
Percentage of DeferredTaxAssetInterestCarryforward100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value6821223982100811551094444
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value12457396417617.064
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3436172239472714
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment

us-gaap:DeferredTaxAssetsPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2090.0113360132
Percentage of DeferredTaxAssetsPropertyPlantAndEquipment100.00.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2355565374756260
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4340273345413914
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value178155129126183156184182
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value20604141403.0-1.0-2.0
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value113517316261335427-2437.0-3583.0
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-129000000.0-116000000.0-84000000.0-93000000.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-15000000.0-18000000.0-14000000.0-19000000.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet11.615.516.720.4

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312020-10-312019-12-312018-12-312017-12-31
Value2.923.110.03480.04570.0387
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312020-10-312019-12-312018-12-312017-12-31
Value2.422.70.03160.04220.0353
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate82.986.890.892.391.2

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312020-10-312019-12-312018-12-312017-12-31
Value4.04.00.040.040.04
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312020-10-312019-12-312018-12-312017-12-312016-12-31
Value129122116849377
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312020-10-312019-12-312018-12-312017-12-312016-12-31
Value474645566570
Percentage of DefinedBenefitPlanBenefitObligation36.437.738.866.769.990.9

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value272723
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value111114
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter40.740.760.9

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value5.04.03.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value1310.017
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths260.0250.0566.7

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value5000000.05000000.04000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value3000000.02000000.04000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive60.040.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value5000000.05000000.04000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value2000000.03000000.04000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour40.060.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value5000000.05000000.04000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value3000000.02000000.04000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree60.040.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value5000000.05000000.04000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value2000000.04000000.05000000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo40.080.0125.0

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value5000000.02000000.03000000.0
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value5000000.04000000.03000000.0
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.0200.0100.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

crc:BondFunds, us-gaap:FairValueInputsLevel1, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.05.05.06.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0

crc:GrowthFunds, us-gaap:FairValueInputsLevel1, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.02.02.03.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets120.040.040.050.0

crc:GuaranteedDepositAccount, us-gaap:FairValueInputsLevel3, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.07.07.07.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets120.0140.0140.0116.7

crc:InternationalEquity, us-gaap:FairValueInputsLevel2, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.02.05.05.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets40.040.0100.083.3

crc:PlanAssetsGross, us-gaap:FairValueInputsLevel1, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value19111218
Percentage of DefinedBenefitPlanFairValueOfPlanAssets380.0220.0240.0300.0

crc:PlanAssetsGross, us-gaap:FairValueInputsLevel2, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value7.09.02321
Percentage of DefinedBenefitPlanFairValueOfPlanAssets140.0180.0460.0350.0

crc:PlanAssetsGross, us-gaap:FairValueInputsLevel3, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.07.07.07.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets120.0140.0140.0116.7

crc:UsEquity, us-gaap:FairValueInputsLevel2, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.04.09.09.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets60.080.0180.0150.0

crc:ValueFunds, us-gaap:FairValueInputsLevel1, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.02.02.03.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets40.040.040.050.0

us-gaap:FixedIncomeFunds, us-gaap:FairValueInputsLevel2, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.03.09.07.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets40.060.0180.0116.7

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

crc:BondFunds, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.05.05.06.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0

crc:GrowthFunds, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.02.02.03.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets120.040.040.050.0

crc:GuaranteedDepositAccount, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.07.07.07.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets120.0140.0140.0116.7

crc:InternationalEquity, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.02.05.05.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets40.040.0100.083.3

crc:PlanAssetsGross, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value32274246
Percentage of DefinedBenefitPlanFairValueOfPlanAssets640.0540.0840.0766.7

crc:UsEquity, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.04.09.09.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets60.080.0180.0150.0

crc:ValueFunds, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.02.02.03.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets40.040.040.050.0

us-gaap:FixedIncomeFunds, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.03.09.07.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets40.060.0180.0116.7

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312020-10-312019-12-312018-12-312017-12-312016-12-31
Value322627424644
Percentage of DefinedBenefitPlanFairValueOfPlanAssets640.00.0540.0840.0766.70.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312020-10-312019-12-312018-12-312017-12-31
Value-129000000.0-122000000.0-116000000.0-84000000.0-93000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312020-10-312019-12-312018-12-312017-12-31
Value-15000000.0-20000000.0-18000000.0-14000000.0-19000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan11.616.415.516.720.4

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear us-gaap:Range, us-gaap:TitleOfIndividual, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear

srt:Maximum, crc:UnionEmployees, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value7.0
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear100.0

srt:Minimum, crc:UnionEmployees, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value6.5
Percentage of DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear92.9

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value434153
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value322742
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value474556
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation100.0100.0100.0

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:DefinedBenefitPlanByPlanAssetCategories

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

us-gaap:DefinedBenefitPlanDebtSecurity


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value35.00.350.350.35
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0100.0100.0

us-gaap:EquitySecurities


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value65.00.650.650.65
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage185.7185.7185.7185.7

us-gaap:DerivativeAssetFairValueGrossLiability us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssetFairValueGrossLiability

us-gaap:OtherAssets, us-gaap:CommodityContract


Derivative
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1838630.00.00.03.00.09.0
Percentage of DerivativeAssetFairValueGrossLiability100.0100.0100.00.00.00.0100.00.0100.0

us-gaap:OtherCurrentAssets, us-gaap:CommodityContract


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value6.012217.00.00.010.0352584
Percentage of DerivativeAssetFairValueGrossLiability33.331.633.30.00.00.00.01166.70.0933.3

us-gaap:DerivativeAssets us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis

us-gaap:DerivativeAssets

us-gaap:OtherCurrentAssets, us-gaap:CommodityContract, us-gaap:CarryingReportedAmountFairValueDisclosure


Derivative
Period End2020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value177.0153979168345944234656343987
Percentage of DerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssetsCurrent

us-gaap:DerivativeAssetsCurrent


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value8.08.0177.0153997927916834592339
Percentage of DerivativeAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeAssetsLiabilitiesAtFairValueNet us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis

us-gaap:DerivativeAssetsLiabilitiesAtFairValueNet

us-gaap:CommodityContract, us-gaap:CarryingReportedAmountFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value-421.0-237.0-56.0157.0173576178-153.0-200.0-126.0-133.0-20.028-20.0-97.0-97.086
Percentage of DerivativeAssetsLiabilitiesAtFairValueNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommodityContract, us-gaap:EstimateOfFairValueFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value-421.0-237.0-56.0157.0173576178-153.0-200.0-126.0-133.0-20.028-20.0-97.0-97.086
Percentage of DerivativeAssetsLiabilitiesAtFairValueNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeFairValueOfDerivativeAsset us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:OtherAssets, us-gaap:CommodityContract, us-gaap:EstimateOfFairValueFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1838630.02.01.02.023137.07.01.0134.09.02521
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCurrentAssets, us-gaap:CommodityContract, us-gaap:EstimateOfFairValueFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value6.01221247.015499925234595239525948885687
Percentage of DerivativeFairValueOfDerivativeAsset33.331.633.30.00.0750.04900.04950.01095.7261.5842.9742.93900.0400.01475.0533.3352.0266.70.0

us-gaap:DerivativeFairValueOfDerivativeLiability us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis

us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:AccruedLiabilities, us-gaap:CommodityContract, us-gaap:EstimateOfFairValueFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value271163719.00.00.0152487191260178170662253152851.0
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncurrentLiabilities, us-gaap:CommodityContract, us-gaap:EstimateOfFairValueFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value174124690.01.010.09.06.07.03.01913245889
Percentage of DerivativeFairValueOfDerivativeLiability64.276.197.20.04.211.54.72.33.91.828.859.145.338.2104.7

us-gaap:DerivativeLiabilities us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementBasis

us-gaap:DerivativeLiabilities

us-gaap:AccruedLiabilities, us-gaap:CommodityContract, us-gaap:CarryingReportedAmountFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value265151502.00.00.05.04.03.01912601701546019391031.0
Percentage of DerivativeLiabilities100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncurrentLiabilities, us-gaap:CommodityContract, us-gaap:CarryingReportedAmountFairValueDisclosure


Derivative
Period End2021-06-302021-03-312020-12-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value156866.00.01.01.09.06.07.03.019132452
Percentage of DerivativeLiabilities58.957.012.00.025.033.34.72.34.11.931.768.461.550.5

us-gaap:DerivativeLiabilitiesCurrent

us-gaap:DerivativeLiabilitiesCurrent


Derivative
Period End2021-06-302021-03-312020-12-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value265151503.0191260154103
Percentage of DerivativeLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilitiesNoncurrent

us-gaap:DerivativeLiabilitiesNoncurrent


Derivative
Period End2021-06-302021-03-312020-12-31
Value156866.0
Percentage of DerivativeLiabilitiesNoncurrent100.0100.0100.0

us-gaap:DerivativeLiabilityFairValueGrossAsset us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLiabilityFairValueGrossAsset

us-gaap:AccruedLiabilities, us-gaap:CommodityContract


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312016-06-30
Value6.012217.00.00.010.035258426
Percentage of DerivativeLiabilityFairValueGrossAsset100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncurrentLiabilities, us-gaap:CommodityContract


Derivative
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302018-12-312016-06-30
Value1838630.03.00.09.022
Percentage of DerivativeLiabilityFairValueGrossAsset300.0316.7300.00.08.60.010.784.6

us-gaap:DueFromJointVentures

us-gaap:DueFromJointVentures


Due
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value48444241505170596668688786765111012013012013797
Percentage of DueFromJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DueToRelatedPartiesCurrent

us-gaap:DueToRelatedPartiesCurrent


Due
Period End2021-03-312020-12-312019-12-31
Value44215.0
Percentage of DueToRelatedPartiesCurrent100.0100.0100.0

us-gaap:DueToRelatedPartiesNoncurrent

us-gaap:DueToRelatedPartiesNoncurrent


Due
Period End2021-03-312020-12-31
Value2431
Percentage of DueToRelatedPartiesNoncurrent100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value616372814863116937769109
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

crc:PerformanceStockUnits


Employee
Period End2021-06-302021-03-31
Value1716
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2020-12-31
Value1000000.0
Percentage of FinanceLeaseLiability100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2020-12-31
Value1000000.0
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1000000.01000000.01000000.01000000.002000000.0
Percentage of FinanceLeaseRightOfUseAsset100.0100.0100.0100.00.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2020-12-312019-12-31
Value4.08.5
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:FreshStartAdjustmentIncreaseDecreaseAccruedLiabilities us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

us-gaap:FreshStartAdjustmentIncreaseDecreaseAccruedLiabilities

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value14
Percentage of FreshStartAdjustmentIncreaseDecreaseAccruedLiabilities100.0

us-gaap:FreshStartAdjustmentIncreaseDecreaseAccumulatedDepreciationAndAmortization us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

us-gaap:FreshStartAdjustmentIncreaseDecreaseAccumulatedDepreciationAndAmortization

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value-18588000000.0
Percentage of FreshStartAdjustmentIncreaseDecreaseAccumulatedDepreciationAndAmortization100.0

us-gaap:FreshStartAdjustmentIncreaseDecreaseAccumulatedOtherComprehensiveIncomeLoss us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

us-gaap:FreshStartAdjustmentIncreaseDecreaseAccumulatedOtherComprehensiveIncomeLoss

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value23
Percentage of FreshStartAdjustmentIncreaseDecreaseAccumulatedOtherComprehensiveIncomeLoss100.0

us-gaap:FreshStartAdjustmentIncreaseDecreaseAssets us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

us-gaap:FreshStartAdjustmentIncreaseDecreaseAssets

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value-1652000000.0
Percentage of FreshStartAdjustmentIncreaseDecreaseAssets100.0

us-gaap:FreshStartAdjustmentIncreaseDecreaseCurrentLiabilities us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

us-gaap:FreshStartAdjustmentIncreaseDecreaseCurrentLiabilities

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value14
Percentage of FreshStartAdjustmentIncreaseDecreaseCurrentLiabilities100.0

us-gaap:FreshStartAdjustmentIncreaseDecreaseLiabilities

us-gaap:FreshStartAdjustmentIncreaseDecreaseLiabilities


Fresh
Period End2020-10-31
Value-5000000.0
Percentage of FreshStartAdjustmentIncreaseDecreaseLiabilities100.0

us-gaap:FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

us-gaap:FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value-1652000000.0
Percentage of FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity100.0

us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherAssets us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherAssets

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value-4000000.0
Percentage of FreshStartAdjustmentIncreaseDecreaseOtherAssets100.0

us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligations us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligations

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value49
Percentage of FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligations100.0

us-gaap:FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNet us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

us-gaap:FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNet

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value-1648000000.0
Percentage of FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNet100.0

us-gaap:FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

us-gaap:FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value-1745000000.0
Percentage of FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit100.0

us-gaap:FreshStartAdjustmentIncreaseDecreaseStockholdersEquity us-gaap:FreshStartAdjustmentsTypeOfFreshStartAdjustment

us-gaap:FreshStartAdjustmentIncreaseDecreaseStockholdersEquity

crc:FreshStartAdjustments


Fresh
Period End2020-10-31
Value-1722000000.0
Percentage of FreshStartAdjustmentIncreaseDecreaseStockholdersEquity100.0

us-gaap:InterestPayableCurrent

us-gaap:InterestPayableCurrent


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312015-09-302015-06-302015-03-312014-12-31
Value2010.01.01.015465134915561560202365859770
Percentage of InterestPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentsInAndAdvancesToAffiliatesAmountOfEquity dei:LegalEntity

us-gaap:InvestmentsInAndAdvancesToAffiliatesAmountOfEquity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Investments
Period End2020-09-30
Value-261.0
Percentage of InvestmentsInAndAdvancesToAffiliatesAmountOfEquity100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value8000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LetterOfCredit, us-gaap:LineOfCredit


Letters
Period End2020-12-31
Value134
Percentage of LettersOfCreditOutstandingAmount100.0

us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent

us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent


Liabilities
Period End2021-06-30
Value101
Percentage of LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent100.0

us-gaap:LiabilitiesSubjectToCompromise dei:LegalEntity

us-gaap:LiabilitiesSubjectToCompromise

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Liabilities
Period End2020-09-30
Value4516
Percentage of LiabilitiesSubjectToCompromise100.0

us-gaap:LiabilitiesSubjectToCompromise us-gaap:DebtInstrument

crc:DebtPriorToBankruptcy


Liabilities
Period End2020-09-30
Value4400
Percentage of LiabilitiesSubjectToCompromise97.4

us-gaap:LineOfCredit us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:LineOfCredit

us-gaap:LetterOfCredit, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Line
Period End2021-04-30
Value125
Percentage of LineOfCredit100.0

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Line
Period End2021-06-302021-04-302021-03-312020-12-312020-10-27
Value4925405403071200
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Line
Period End2021-04-30
Value492
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity91.1

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:LetterOfCredit, us-gaap:LineOfCredit


Line
Period End2020-10-27
Value200
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Line
Period End2021-05-07
Value492
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity0.0

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:LineOfCredit


Line
Period End2021-06-302021-03-31
Value367415
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0100.0

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Line
Period End2021-04-30
Value367
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity0.0

us-gaap:LongTermDebtFairValue

us-gaap:LongTermDebtFairValue


Long
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value63361159912001000380039004600480045005000480044004800410041004600490043004300300036004500590060005600
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtFairValue us-gaap:DebtInstrument

crc:EHPNotes


Long
Period End2020-12-31
Value300
Percentage of LongTermDebtFairValue50.1

us-gaap:LongTermDebtFairValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Long
Period End2020-09-30
Value500
Percentage of LongTermDebtFairValue0.0

us-gaap:LongTermDebtFairValue us-gaap:LongtermDebtType

crc:VariableRateDebt


Long
Period End2020-12-31
Value299
Percentage of LongTermDebtFairValue49.9

us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-31
Value633611
Percentage of LongTermDebtFairValue100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive


Long
Period End2020-12-31
Value300
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive


Long
Period End2020-12-31
Value200
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour


Long
Period End2020-12-31
Value99
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0

us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners dei:LegalEntity, us-gaap:Ownership, us-gaap:StatementClassOfStock

us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners

crc:EcrCorporateHoldings, crc:AresJointVenture, us-gaap:CommonClassA


Minority
Period End2020-09-302020-06-302020-03-312018-02-28
Value50.00.50.50.5
Percentage of MinorityInterestOwnershipPercentageByNoncontrollingOwners100.0100.0100.0100.0

crc:EcrCorporateHoldings, crc:AresJointVenture, us-gaap:CommonClassC


Minority
Period End2020-09-302020-06-302020-03-312018-02-28
Value4.750.04750.04750.0475
Percentage of MinorityInterestOwnershipPercentageByNoncontrollingOwners9.59.59.59.5

crc:EcrCorporateHoldings, crc:AresJointVenture, us-gaap:SeriesBPreferredStock


Minority
Period End2020-09-302020-06-302020-03-312018-02-28
Value100.01.01.01.0
Percentage of MinorityInterestOwnershipPercentageByNoncontrollingOwners200.0200.0200.0200.0

us-gaap:MinorityInterestOwnershipPercentageByParent us-gaap:Ownership, us-gaap:StatementClassOfStock

us-gaap:MinorityInterestOwnershipPercentageByParent

crc:AresJointVenture, us-gaap:CommonClassA


Minority
Period End2020-09-302020-06-302020-03-312018-02-28
Value50.00.50.50.5
Percentage of MinorityInterestOwnershipPercentageByParent100.0100.0100.0100.0

crc:AresJointVenture, us-gaap:CommonClassC


Minority
Period End2020-09-302020-06-302020-03-312018-02-28
Value95.250.95250.95250.9525
Percentage of MinorityInterestOwnershipPercentageByParent190.5190.5190.5190.5

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value4.512.2
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:DomesticCountry


Operating
Period End2020-12-312019-12-312018-12-312017-12-312015-12-312014-12-31
Value171000555110040182
Percentage of OperatingLossCarryforwards100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:StatementGeographical, us-gaap:IncomeTaxAuthority

stpr:CA, us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-312018-12-31
Value200020001600
Percentage of OperatingLossCarryforwards11764.7200.0288.3

us-gaap:OtherAccruedLiabilitiesNoncurrent

us-gaap:OtherAccruedLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312019-12-31
Value18191911
Percentage of OtherAccruedLiabilitiesNoncurrent100.0100.0100.0100.0

us-gaap:OtherAssetsMiscellaneousCurrent

us-gaap:OtherAssetsMiscellaneousCurrent


Other
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value5000000.01000000.01000000.02000000.03000000.0
Percentage of OtherAssetsMiscellaneousCurrent100.0100.0100.0100.0100.0

us-gaap:OtherAssetsMiscellaneousNoncurrent

us-gaap:OtherAssetsMiscellaneousNoncurrent


Other
Period End2021-06-302020-12-31
Value1310.0
Percentage of OtherAssetsMiscellaneousNoncurrent100.0100.0

us-gaap:OtherInventorySupplies

us-gaap:OtherInventorySupplies


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value5657585859586464686865646054535454545557585955697067666473
Percentage of OtherInventorySupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-31
Value4000000.03000000.02000000.03000000.0
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities100.0100.0100.0100.0

us-gaap:PostconfirmationAccountsPayable

us-gaap:PostconfirmationAccountsPayable


Postconfirmation
Period End2020-10-31
Value215
Percentage of PostconfirmationAccountsPayable100.0

us-gaap:PostconfirmationAccruedLiabilities

us-gaap:PostconfirmationAccruedLiabilities


Postconfirmation
Period End2020-10-31
Value231
Percentage of PostconfirmationAccruedLiabilities100.0

us-gaap:PostconfirmationAdditionalPaidInCapital

us-gaap:PostconfirmationAdditionalPaidInCapital


Postconfirmation
Period End2020-10-31
Value1253
Percentage of PostconfirmationAdditionalPaidInCapital100.0

us-gaap:PostconfirmationAdditionalPaidInCapital us-gaap:Restatement

srt:RestatementAdjustment


Postconfirmation
Period End2020-10-31
Value1253
Percentage of PostconfirmationAdditionalPaidInCapital100.0

us-gaap:PostconfirmationAssets

us-gaap:PostconfirmationAssets


Postconfirmation
Period End2020-10-31
Value3288
Percentage of PostconfirmationAssets100.0

us-gaap:PostconfirmationCashAndCashEquivalents

us-gaap:PostconfirmationCashAndCashEquivalents


Postconfirmation
Period End2020-10-31
Value203
Percentage of PostconfirmationCashAndCashEquivalents100.0

us-gaap:PostconfirmationCommonStock

us-gaap:PostconfirmationCommonStock


Postconfirmation
Period End2020-10-31
Value1000000.0
Percentage of PostconfirmationCommonStock100.0

us-gaap:PostconfirmationCommonStock us-gaap:Restatement

srt:RestatementAdjustment


Postconfirmation
Period End2020-10-31
Value1000000.0
Percentage of PostconfirmationCommonStock100.0

us-gaap:PostconfirmationCurrentAssets

us-gaap:PostconfirmationCurrentAssets


Postconfirmation
Period End2020-10-31
Value515
Percentage of PostconfirmationCurrentAssets100.0

us-gaap:PostconfirmationCurrentLiabilities

us-gaap:PostconfirmationCurrentLiabilities


Postconfirmation
Period End2020-10-31
Value446
Percentage of PostconfirmationCurrentLiabilities100.0

us-gaap:PostconfirmationInventories

us-gaap:PostconfirmationInventories


Postconfirmation
Period End2020-10-31
Value61
Percentage of PostconfirmationInventories100.0

us-gaap:PostconfirmationLiabilitiesAndStockholdersEquity

us-gaap:PostconfirmationLiabilitiesAndStockholdersEquity


Postconfirmation
Period End2020-10-31
Value3288
Percentage of PostconfirmationLiabilitiesAndStockholdersEquity100.0

us-gaap:PostconfirmationLongTermDebt

us-gaap:PostconfirmationLongTermDebt


Postconfirmation
Period End2020-12-312020-10-31
Value725723
Percentage of PostconfirmationLongTermDebt100.0100.0

us-gaap:PostconfirmationOtherAssets

us-gaap:PostconfirmationOtherAssets


Postconfirmation
Period End2020-10-31
Value91
Percentage of PostconfirmationOtherAssets100.0

us-gaap:PostconfirmationOtherLongTermDebt

us-gaap:PostconfirmationOtherLongTermDebt


Postconfirmation
Period End2020-10-31
Value231
Percentage of PostconfirmationOtherLongTermDebt100.0

us-gaap:PostconfirmationOtherNoncurrentObligations

us-gaap:PostconfirmationOtherNoncurrentObligations


Postconfirmation
Period End2020-10-31
Value774
Percentage of PostconfirmationOtherNoncurrentObligations100.0

us-gaap:PostconfirmationPreferredAndCommonStockHeldInTreasury

us-gaap:PostconfirmationPreferredAndCommonStockHeldInTreasury


Postconfirmation
Period End2020-10-31
Value15
Percentage of PostconfirmationPreferredAndCommonStockHeldInTreasury100.0

us-gaap:PostconfirmationPreferredAndCommonStockHeldInTreasury us-gaap:Restatement

srt:RestatementAdjustment


Postconfirmation
Period End2020-10-31
Value15
Percentage of PostconfirmationPreferredAndCommonStockHeldInTreasury100.0

us-gaap:PostconfirmationPrepaidAndOtherCurrentAssets

us-gaap:PostconfirmationPrepaidAndOtherCurrentAssets


Postconfirmation
Period End2020-10-31
Value102
Percentage of PostconfirmationPrepaidAndOtherCurrentAssets100.0

us-gaap:PostconfirmationPropertyAndEquipmentNet

us-gaap:PostconfirmationPropertyAndEquipmentNet


Postconfirmation
Period End2020-10-31
Value2682
Percentage of PostconfirmationPropertyAndEquipmentNet100.0

us-gaap:PostconfirmationReceivablesNet

us-gaap:PostconfirmationReceivablesNet


Postconfirmation
Period End2020-10-31
Value149
Percentage of PostconfirmationReceivablesNet100.0

us-gaap:PostconfirmationStockholdersEquity

us-gaap:PostconfirmationStockholdersEquity


Postconfirmation
Period End2020-10-31
Value1269
Percentage of PostconfirmationStockholdersEquity100.0

us-gaap:PreconfirmationAccountsPayable

us-gaap:PreconfirmationAccountsPayable


Preconfirmation
Period End2020-10-31
Value215
Percentage of PreconfirmationAccountsPayable100.0

us-gaap:PreconfirmationAccruedLiabilities

us-gaap:PreconfirmationAccruedLiabilities


Preconfirmation
Period End2020-10-31
Value233
Percentage of PreconfirmationAccruedLiabilities100.0

us-gaap:PreconfirmationAccruedLiabilities us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value-16.0
Percentage of PreconfirmationAccruedLiabilities-6.9

us-gaap:PreconfirmationAccumulatedDepreciationAndAmortization

us-gaap:PreconfirmationAccumulatedDepreciationAndAmortization


Preconfirmation
Period End2020-10-31
Value18588
Percentage of PreconfirmationAccumulatedDepreciationAndAmortization100.0

us-gaap:PreconfirmationAccumulatedOtherComprehensiveIncomeLoss

us-gaap:PreconfirmationAccumulatedOtherComprehensiveIncomeLoss


Preconfirmation
Period End2020-10-31
Value-23000000.0
Percentage of PreconfirmationAccumulatedOtherComprehensiveIncomeLoss100.0

us-gaap:PreconfirmationAdditionalPaidInCapital

us-gaap:PreconfirmationAdditionalPaidInCapital


Preconfirmation
Period End2020-10-31
Value5149
Percentage of PreconfirmationAdditionalPaidInCapital100.0

us-gaap:PreconfirmationAdditionalPaidInCapital us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value-5149.0
Percentage of PreconfirmationAdditionalPaidInCapital-100.0

us-gaap:PreconfirmationAssets

us-gaap:PreconfirmationAssets


Preconfirmation
Period End2020-10-31
Value4827
Percentage of PreconfirmationAssets100.0

us-gaap:PreconfirmationAssets us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value113
Percentage of PreconfirmationAssets2.3

us-gaap:PreconfirmationCashAndCashEquivalents

us-gaap:PreconfirmationCashAndCashEquivalents


Preconfirmation
Period End2020-10-31
Value106
Percentage of PreconfirmationCashAndCashEquivalents100.0

us-gaap:PreconfirmationCashAndCashEquivalents us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value97
Percentage of PreconfirmationCashAndCashEquivalents91.5

us-gaap:PreconfirmationCurrentAssets

us-gaap:PreconfirmationCurrentAssets


Preconfirmation
Period End2020-10-31
Value420
Percentage of PreconfirmationCurrentAssets100.0

us-gaap:PreconfirmationCurrentAssets us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value95
Percentage of PreconfirmationCurrentAssets22.6

us-gaap:PreconfirmationCurrentLiabilities

us-gaap:PreconfirmationCurrentLiabilities


Preconfirmation
Period End2020-10-31
Value1181
Percentage of PreconfirmationCurrentLiabilities100.0

us-gaap:PreconfirmationCurrentLiabilities us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value-749.0
Percentage of PreconfirmationCurrentLiabilities-63.4

us-gaap:PreconfirmationDebtorInPossessionFinancing

us-gaap:PreconfirmationDebtorInPossessionFinancing


Preconfirmation
Period End2020-10-31
Value733
Percentage of PreconfirmationDebtorInPossessionFinancing100.0

us-gaap:PreconfirmationDebtorInPossessionFinancing us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value-733.0
Percentage of PreconfirmationDebtorInPossessionFinancing-100.0

us-gaap:PreconfirmationInventories

us-gaap:PreconfirmationInventories


Preconfirmation
Period End2020-10-31
Value61
Percentage of PreconfirmationInventories100.0

us-gaap:PreconfirmationLiabilitiesAndStockholdersEquity

us-gaap:PreconfirmationLiabilitiesAndStockholdersEquity


Preconfirmation
Period End2020-10-31
Value4827
Percentage of PreconfirmationLiabilitiesAndStockholdersEquity100.0

us-gaap:PreconfirmationLiabilitiesAndStockholdersEquity us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value113
Percentage of PreconfirmationLiabilitiesAndStockholdersEquity2.3

us-gaap:PreconfirmationLiabilitiesSubjectToCompromise

us-gaap:PreconfirmationLiabilitiesSubjectToCompromise


Preconfirmation
Period End2020-10-31
Value4516
Percentage of PreconfirmationLiabilitiesSubjectToCompromise100.0

us-gaap:PreconfirmationLiabilitiesSubjectToCompromise us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value-4516.0
Percentage of PreconfirmationLiabilitiesSubjectToCompromise-100.0

us-gaap:PreconfirmationLongTermDebt us-gaap:Restatement

us-gaap:PreconfirmationLongTermDebt

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value723
Percentage of PreconfirmationLongTermDebt100.0

us-gaap:PreconfirmationOtherAssets

us-gaap:PreconfirmationOtherAssets


Preconfirmation
Period End2020-10-31
Value77
Percentage of PreconfirmationOtherAssets100.0

us-gaap:PreconfirmationOtherAssets us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value18
Percentage of PreconfirmationOtherAssets23.4

us-gaap:PreconfirmationOtherNoncurrentObligations

us-gaap:PreconfirmationOtherNoncurrentObligations


Preconfirmation
Period End2020-10-31
Value725
Percentage of PreconfirmationOtherNoncurrentObligations100.0

us-gaap:PreconfirmationPropertyAndEquipmentNet

us-gaap:PreconfirmationPropertyAndEquipmentNet


Preconfirmation
Period End2020-10-31
Value4330
Percentage of PreconfirmationPropertyAndEquipmentNet100.0

us-gaap:PreconfirmationReceivablesNet

us-gaap:PreconfirmationReceivablesNet


Preconfirmation
Period End2020-10-31
Value149
Percentage of PreconfirmationReceivablesNet100.0

us-gaap:PreconfirmationRetainedEarningsDeficit

us-gaap:PreconfirmationRetainedEarningsDeficit


Preconfirmation
Period End2020-10-31
Value-7481.0
Percentage of PreconfirmationRetainedEarningsDeficit100.0

us-gaap:PreconfirmationRetainedEarningsDeficit us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value9226
Percentage of PreconfirmationRetainedEarningsDeficit-123.3

us-gaap:PreconfirmationStockholdersEquity

us-gaap:PreconfirmationStockholdersEquity


Preconfirmation
Period End2020-10-31
Value-2355.0
Percentage of PreconfirmationStockholdersEquity100.0

us-gaap:PreconfirmationStockholdersEquity us-gaap:Restatement

srt:RestatementAdjustment


Preconfirmation
Period End2020-10-31
Value5346
Percentage of PreconfirmationStockholdersEquity-227.0

us-gaap:PreferredStockLiquidationPreferenceValue us-gaap:StatementClassOfStock

us-gaap:PreferredStockLiquidationPreferenceValue

us-gaap:PreferredClassB


Preferred
Period End2020-09-30
Value835
Percentage of PreferredStockLiquidationPreferenceValue100.0

us-gaap:PrepaidExpenseCurrent

us-gaap:PrepaidExpenseCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value191820242718191823201623251914
Percentage of PrepaidExpenseCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PrepaidExpenseNoncurrent

us-gaap:PrepaidExpenseNoncurrent


Prepaid
Period End2021-06-302020-12-31
Value1714
Percentage of PrepaidExpenseNoncurrent100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value1388634185551846516537
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization100.0100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value257326252655436044496352
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization100.0100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization dei:LegalEntity

crc:ParentCompanyAndSubsidiariesInDebtorInPossessionFinancing


Property
Period End2020-09-30
Value3937
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization90.3

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value271127112689229152291422889
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization100.0100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization us-gaap:PropertyPlantAndEquipmentByType

crc:FacilitiesAndOther


Property
Period End2020-12-312019-12-31
Value272549
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization10.12.4

crc:ProvedOilAndGasProperties


Property
Period End2020-12-312019-12-31
Value241621285
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization89.893.0

crc:UnprovedOilAndGasProperties


Property
Period End2020-12-312019-12-31
Value1.01055
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization0.04.6

us-gaap:PropertyPlantAndEquipmentFairValueDisclosure

us-gaap:PropertyPlantAndEquipmentFairValueDisclosure


Property
Period End2020-10-31
Value2682
Percentage of PropertyPlantAndEquipmentFairValueDisclosure100.0

us-gaap:PropertyPlantAndEquipmentFairValueDisclosure us-gaap:PropertyPlantAndEquipmentByType

crc:FacilitiesAndOther


Property
Period End2020-10-31
Value273
Percentage of PropertyPlantAndEquipmentFairValueDisclosure10.2

crc:ProvedOilAndGasProperties


Property
Period End2020-10-31
Value2409
Percentage of PropertyPlantAndEquipmentFairValueDisclosure89.8

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount


Redeemable
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value692828816802789777766756745735724
Percentage of RedeemableNoncontrollingInterestEquityCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount us-gaap:StatementClassOfStock

crc:MezzanineEquityRedeemableNoncontrollingInterest


Redeemable
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6928288168027897777667567457357240.0
Percentage of RedeemableNoncontrollingInterestEquityCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount us-gaap:StatementClassOfStock, us-gaap:TypeOfArrangement

crc:MezzanineEquityRedeemableNoncontrollingInterest, crc:AresJointVenture


Redeemable
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value692827814802789777766756
Percentage of RedeemableNoncontrollingInterestEquityCarryingAmount100.099.999.8100.0100.0100.0100.0100.0

us-gaap:ReorganizationValue

us-gaap:ReorganizationValue


Reorganization
Period End2020-10-31
Value3288
Percentage of ReorganizationValue100.0

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:RestrictedCashAndCashEquivalents


Restricted
Period End2020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value242110.03.012262.013235.0
Percentage of RestrictedCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostExpectedCostRemaining1 us-gaap:RestructuringCostAndReserve

us-gaap:RestructuringAndRelatedCostExpectedCostRemaining1

crc:OrganizationChanges


Restructuring
Period End2021-03-31
Value16
Percentage of RestructuringAndRelatedCostExpectedCostRemaining1100.0

crc:OrganizationalChanges


Restructuring
Period End2020-12-312019-12-31
Value7.019
Percentage of RestructuringAndRelatedCostExpectedCostRemaining10.00.0

us-gaap:SettlementLiabilitiesCurrent

us-gaap:SettlementLiabilitiesCurrent


Settlement
Period End2021-06-302020-12-31
Value343.0
Percentage of SettlementLiabilitiesCurrent100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

crc:PerformanceStockUnits


Share
Period End2021-06-302021-03-31
Value948000.0860000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-31
Value1144000.01048000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber120.7121.9

us-gaap:ShortTermBorrowings us-gaap:CreditFacility, us-gaap:ShortTermDebtType

us-gaap:ShortTermBorrowings

crc:SeniorDebtorInPossessionFacility, us-gaap:LineOfCredit


Short
Period End2020-09-30
Value83
Percentage of ShortTermBorrowings100.0

us-gaap:ShorttermDebtFairValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:ShorttermDebtFairValue

us-gaap:FairValueInputsLevel2


Shortterm
Period End2020-09-30
Value733
Percentage of ShorttermDebtFairValue100.0

us-gaap:StockRepurchaseProgramAuthorizedAmount1

us-gaap:StockRepurchaseProgramAuthorizedAmount1


Stock
Period End2021-05-31
Value150
Percentage of StockRepurchaseProgramAuthorizedAmount1100.0

us-gaap:StockRepurchaseProgramAuthorizedAmount1 us-gaap:SubsequentEventType

us-gaap:SubsequentEvent


Stock
Period End2021-08-052021-05-13
Value250150
Percentage of StockRepurchaseProgramAuthorizedAmount10.00.0

Line plots across dimensions of each concept


us-gaap:CostOfGoodsAndServicesSold
us-gaap:ProductOrService
(None,)
Cost Of Goods And Services Soldus-gaap: Product Or Service
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanType
(None,)
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrentus-gaap: Retirement Plan Type
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Equity Components
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents
(None,)
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Valueus-gaap: Statement Equity Components
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents, us-gaap:TypeOfArrangement
('us-gaap:NoncontrollingInterest', None)
Minority Interest Decrease From Distributions To Noncontrolling Interest Holdersus-gaap: Statement Equity Components, us-gaap: Type Of Arrangement