Debtor-In-Possession Financing, Basis Spread On Variable Interest Rate On Borrowings Outstanding

No definition available.

Name:	crc_DebtorInPossessionFinancingBasisSpreadOnVariableInterestRateOnBorrowingsOutstanding
Namespace Prefix:	crc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debtor-In-Possession Financing, Upfront Commitment Fees

+ References

No definition available.

+ Details

Name:	crc_DebtorInPossessionFinancingUpfrontCommitmentFees
Namespace Prefix:	crc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage Of Debt Hedged By Price Risk Derivatives

+ References

No definition available.

+ Details

Name:	crc_PercentageOfDebtHedgedByPriceRiskDerivatives
Namespace Prefix:	crc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Plan Of Reorganization, Proceeds From Issuance Of Common Stock, Gross

+ References

No definition available.

+ Details

Name:	crc_PlanOfReorganizationProceedsFromIssuanceOfCommonStockGross
Namespace Prefix:	crc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount debtor-in-possession financing arranged (but not necessarily all borrowed).

+ References

No definition available.

+ Details

Name:	us-gaap_DebtorInPossessionFinancingAmountArranged
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of fee on unused borrowings under debtor-in-possession financing arrangement.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtorInPossessionFinancingFeeOnUnusedBorrowings
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfSecuredDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=crc_SubscriptionRightsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=crc_SecondLienNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=crc_LienNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=crc_SeniorDebtorInPossessionFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=crc_AlternativeBaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=crc_TermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=crc_AdditionalLettersOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=crc_JuniorDebtorInPossessionCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=crc_SeniorDIPAndJuniorDIPCreditAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

CHAPTER 11 PROCEEDINGS - Debtor-in-Possession Credit Agreements (Details) - USD ($) $ in Millions	Oct. 27, 2020	Dec. 31, 2020	Oct. 31, 2020	Jul. 23, 2020
Debt Instrument [Line Items]
Debtor-in-possession financing, amount arranged		$ 2,500
Subscription Rights
Debt Instrument [Line Items]
Proceeds from common stock issued	$ 450
Second Lien Term Loan \| Lien Notes
Debt Instrument [Line Items]
Proceeds from debt	$ 200
Line of Credit \| Senior DIP Facility
Debt Instrument [Line Items]
Debtor-in-possession financing, amount arranged				$ 483
Upfront fees on commitment		1.00%
Commitment fees		0.50%
Line of Credit \| Senior DIP Facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate		4.50%
Line of Credit \| Senior DIP Facility \| Alternative Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate		3.50%
Line of Credit \| Senior DIP Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Debtor-in-possession financing, amount arranged				250
Line of Credit \| Senior DIP Facility \| Letters of Credit
Debt Instrument [Line Items]
Debtor-in-possession financing, amount arranged				150
Line of Credit \| Senior DIP Facility \| Term Loan
Debt Instrument [Line Items]
Debtor-in-possession financing, amount arranged			$ 83	83
Line of Credit \| Senior DIP Facility \| Additional Letters Of Credit
Debt Instrument [Line Items]
Debtor-in-possession financing, amount arranged				35
Line of Credit \| Junior DIP Facility
Debt Instrument [Line Items]
Debtor-in-possession financing, amount arranged				$ 650
Upfront fees on commitment		1.00%
Line of Credit \| Junior DIP Facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate		9.00%
Line of Credit \| Junior DIP Facility \| Alternative Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate		8.00%
Line of Credit \| Senior DIP And Junior DIP Credit Agreements
Debt Instrument [Line Items]
Percentage of debt hedged by price risk derivatives		25.00%