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DEBT - 2016 Credit Agreements (Details) - 2016 Credit Agreement | Aug. 31, 2016 USD ($)
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Debt Instrument [Line Items] |
Maximum borrowing capacity | $ 1,000,000,000
Any June 30 and December 31 |
Debt Instrument [Line Items] |
Minimum asset coverage ratio | 1.20

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- Definition Represents the Asset Coverage Ratio under credit facility agreement. + References No definition available. + Details
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Namespace Prefix: | crc_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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- 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

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- 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

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- Details
Name: | us-gaap_DebtInstrumentAxis=crc_SecuredFirstLienSecondOutCreditAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | crc_PeriodCoveredByCovenantAgreementAxis=crc_AsOfJuneAndDecemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |