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NATURE OF BUSINESS, SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND OTHER - Production - Sharing Type Contracts (Details) | 12 Months Ended
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Dec. 31, 2020
Production Sharing Type Contracts |
Percentage of production represented by PSC-type contracts | 18.00%
Percentage of operating costs reported under PSC-type contracts | 100.00%

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- Definition The percentage of operating costs reported under PSCs. + References No definition available. + Details
Name: | crc_PercentageOfOperatingCostsReportedUnderProductionSharingTypeContracts
Namespace Prefix: | crc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of represented by production sharing type contracts. + References No definition available. + Details
Name: | crc_PercentageOfProductionThroughProductionSharingTypeContracts
Namespace Prefix: | crc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | crc_ProductionSharingTypeContractsAbstract
Namespace Prefix: | crc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration