NATURE OF BUSINESS, SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND OTHER - Production Sharing - Type Contracts and Cash (Details)	12 Months Ended
Dec. 31, 2019
Production Sharing Type Contracts
Percentage of production represented by PSC-type contracts	15.00%
Percentage of operating costs reported under PSC-type contracts	100.00%

The percentage of operating costs reported under PSCs.

No definition available.

Name:	crc_PercentageOfOperatingCostsReportedUnderProductionSharingTypeContracts
Namespace Prefix:	crc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration