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RELATED-PARTY TRANSACTIONS (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Sales $ 1,060us-gaap_RevenueFromRelatedParties
Occidental Petroleum And Subsidiaries  
Sales 1,100us-gaap_RevenueFromRelatedParties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= crc_OccidentalPetroleumAndSubsidiariesMember
Purchases 21.0us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= crc_OccidentalPetroleumAndSubsidiariesMember
Occidental Petroleum And Subsidiaries | General and Administrative Expense  
Charges for services provided by Occidental prior to the spin-off $ 35us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= crc_OccidentalPetroleumAndSubsidiariesMember