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Organization and Summary of Significant Accounting Policies - Summary Of Changes In Future Abandonment Liabilities (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]      
Asset retirement obligations at January 1 $ 55,787,000us-gaap_AssetRetirementObligation $ 47,171,000us-gaap_AssetRetirementObligation $ 62,625,000us-gaap_AssetRetirementObligation
Accretion expense 3,366,000us-gaap_AssetRetirementObligationAccretionExpense 2,767,000us-gaap_AssetRetirementObligationAccretionExpense 3,105,000us-gaap_AssetRetirementObligationAccretionExpense
Revisions 9,916,000us-gaap_AssetRetirementObligationRevisionOfEstimate 2,826,000us-gaap_AssetRetirementObligationRevisionOfEstimate (2,871,000)us-gaap_AssetRetirementObligationRevisionOfEstimate
Plus: Additions for new assets 9,022,000us-gaap_AssetRetirementObligationLiabilitiesIncurred 6,009,000us-gaap_AssetRetirementObligationLiabilitiesIncurred 6,679,000us-gaap_AssetRetirementObligationLiabilitiesIncurred
Less: Plugging costs and sold assets (1,383,000)us-gaap_AssetRetirementObligationLiabilitiesSettled [1] (2,986,000)us-gaap_AssetRetirementObligationLiabilitiesSettled [1] (22,367,000)us-gaap_AssetRetirementObligationLiabilitiesSettled [1]
Total asset retirement obligations at December 31 76,708,000us-gaap_AssetRetirementObligation 55,787,000us-gaap_AssetRetirementObligation 47,171,000us-gaap_AssetRetirementObligation
Less: Current portion of asset retirement obligations at December 31 1,246,000us-gaap_AssetRetirementObligationCurrent 1,434,000us-gaap_AssetRetirementObligationCurrent 2,227,000us-gaap_AssetRetirementObligationCurrent
Non-current portion of asset retirement obligations at December 31 75,462,000us-gaap_AssetRetirementObligationsNoncurrent 54,353,000us-gaap_AssetRetirementObligationsNoncurrent 44,944,000us-gaap_AssetRetirementObligationsNoncurrent
Asset retirement obligation disposed of     $ 20,000,000clr_AssetRetirementObligationDispositions
[1] As a result of asset dispositions during the year ended December 31, 2012, the Company removed $20.0 million of its previously recognized asset retirement obligations that were assumed by the buyers. See Note 13. Property Acquisitions and Dispositions for further discussion.