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Crude Oil and Natural Gas Property Information - Schedule of Costs Incurred in Oil and Gas Property Acquisition Exploration and Development Activities (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Oil and Gas Exploration and Production Industries Disclosures [Abstract]      
Property Acquisition Costs - Proved $ 48,917us-gaap_CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves $ 16,604us-gaap_CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves $ 738,415us-gaap_CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves
Property Acquisition Costs - Unproved 409,529us-gaap_CostsIncurredAcquisitionOfUnprovedOilAndGasProperties 546,881us-gaap_CostsIncurredAcquisitionOfUnprovedOilAndGasProperties 745,601us-gaap_CostsIncurredAcquisitionOfUnprovedOilAndGasProperties
Total property acquisition costs 458,446us-gaap_CostsIncurredAcquisitionOfOilAndGasProperties 563,485us-gaap_CostsIncurredAcquisitionOfOilAndGasProperties 1,484,016us-gaap_CostsIncurredAcquisitionOfOilAndGasProperties
Exploration Costs 863,606us-gaap_CostsIncurredExplorationCosts 687,767us-gaap_CostsIncurredExplorationCosts 857,681us-gaap_CostsIncurredExplorationCosts
Development Costs 3,670,448us-gaap_CostsIncurredDevelopmentCosts 2,549,203us-gaap_CostsIncurredDevelopmentCosts 1,975,660us-gaap_CostsIncurredDevelopmentCosts
Total $ 4,992,500clr_CostsIncurredForOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities $ 3,800,455clr_CostsIncurredForOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities $ 4,317,357clr_CostsIncurredForOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities