Debt Instrument, Covenant Terms, Increase In Commitment Threshold

No definition available.

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Namespace Prefix:	crc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Covenant Terms, Liquidity Threshold

+ References

No definition available.

+ Details

Name:	crc_DebtInstrumentCovenantTermsLiquidityThreshold
Namespace Prefix:	crc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of minimum monthly liquidity required to maintain, per debt covenant agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	crc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Debt Instrument, Variable Rate, Floor

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Derivative, Allocation Percent

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Derivative, Terms, Hedging Percent

+ References

No definition available.

+ Details

Name:	crc_DerivativeTermsHedgingPercent
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

DEBT - Second Lien Notes (Details) - USD ($)	Oct. 27, 2020	Sep. 30, 2020
Crude Oil Hedge Positions
Debt instrument
Derivative, allocation percent		25.00%
Second Lien Notes \| Line of Credit \| Subsequent Event
Debt instrument
Line of credit facility, maximum borrowing capacity	$ 200,000,000
Debt instrument, term	5 years
Financial covenant minimum month end liquidity	$ 170,000,000
Financial covenant, liquidity threshold	247,000,000
Financial covenant, increase in commitment threshold	$ 51,000,000
Second Lien Notes \| Line of Credit \| Subsequent Event \| All Types Of Hedges
Debt instrument
Derivative, allocation percent	25.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| First 24 Months \| Crude Oil Hedge Positions
Debt instrument
Derivative, allocation percent	75.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| Month 25 Through Month 36 \| Crude Oil Hedge Positions
Debt instrument
Derivative, allocation percent	50.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| Prior to 90 Days
Debt instrument
Redemption price, percent	100.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| After 90 Days, Before First Anniversary Date
Debt instrument
Redemption price, percent	105.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| After the First Anniversary Date, Before Second Anniversary Date
Debt instrument
Redemption price, percent	103.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| After the Second Anniversary Date, Before Third Anniversary Date
Debt instrument
Redemption price, percent	102.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| After the Third Anniversary Date, Before Fourth Anniversary Date
Debt instrument
Redemption price, percent	101.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| Fifth Year
Debt instrument
Redemption price, percent	100.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| Minimum \| First 24 Months
Debt instrument
Derivative, hedging percent	50.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| Maximum \| 48 Month Period
Debt instrument
Derivative, hedging percent	80.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| LIBOR
Debt instrument
Interest rate floor	1.00%
Interest rate added to variable rate basis	1.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| Alternative Base Rate
Debt instrument
Interest rate floor	2.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| Federal Funds Rate
Debt instrument
Interest rate added to variable rate basis	0.50%
Second Lien Notes \| Line of Credit \| Subsequent Event \| LIBOR Applicable Margin \| After Second Anniversary
Debt instrument
Interest rate added to variable rate basis	9.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| LIBOR Applicable Margin \| Minimum
Debt instrument
Interest rate added to variable rate basis	9.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| LIBOR Applicable Margin \| Minimum \| Prior to Second Anniversary
Debt instrument
Interest rate added to variable rate basis	9.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| LIBOR Applicable Margin \| Maximum
Debt instrument
Interest rate added to variable rate basis	10.50%
Second Lien Notes \| Line of Credit \| Subsequent Event \| LIBOR Applicable Margin \| Maximum \| Prior to Second Anniversary
Debt instrument
Interest rate added to variable rate basis	10.50%
Second Lien Notes \| Line of Credit \| Subsequent Event \| ABR Applicable Margin \| After Second Anniversary
Debt instrument
Interest rate added to variable rate basis	8.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| ABR Applicable Margin \| Minimum \| Prior to Second Anniversary
Debt instrument
Interest rate added to variable rate basis	8.00%
Second Lien Notes \| Line of Credit \| Subsequent Event \| ABR Applicable Margin \| Maximum \| Prior to Second Anniversary
Debt instrument
Interest rate added to variable rate basis	9.50%