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Derivative Activities - Effects of Non-Hedge Derivatives on Consolidated Statement of Operations (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Derivative Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) Recognized in Income (Non-hedge Derivatives) |  |  |  |  |  |  |  |  | $ 383,520 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet | $ (58,895)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet | $ 40,312 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Gain (Loss) Recognized in Income (Ineffective Portion) |  |  |  |  |  |  |  |  | 0 us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet | (2,930)us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet | 1,125 us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet
Derivative Fair Value Income (Loss) | 412,422 us-gaap_DerivativeGainLossOnDerivativeNet | 142,057 us-gaap_DerivativeGainLossOnDerivativeNet | (24,109)us-gaap_DerivativeGainLossOnDerivativeNet | (146,850)us-gaap_DerivativeGainLossOnDerivativeNet | (59,355)us-gaap_DerivativeGainLossOnDerivativeNet | (40,355)us-gaap_DerivativeGainLossOnDerivativeNet | 137,760 us-gaap_DerivativeGainLossOnDerivativeNet | (99,875)us-gaap_DerivativeGainLossOnDerivativeNet | 383,520 us-gaap_DerivativeGainLossOnDerivativeNet | (61,825)us-gaap_DerivativeGainLossOnDerivativeNet | 41,437 us-gaap_DerivativeGainLossOnDerivativeNet
Swaps |  |  |  |  |  |  |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) Recognized in Income (Non-hedge Derivatives) |  |  |  |  |  |  |  |  | 367,484 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = us-gaap_SwapMember | (48,492)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = us-gaap_SwapMember | 11,601 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = us-gaap_SwapMember
Gain (Loss) Recognized in Income (Ineffective Portion) |  |  |  |  |  |  |  |  |  | (2,034)us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet / us-gaap_DerivativeByNatureAxis = us-gaap_SwapMember | (657)us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet / us-gaap_DerivativeByNatureAxis = us-gaap_SwapMember
Derivative Fair Value Income (Loss) |  |  |  |  |  |  |  |  | 367,484 us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeByNatureAxis = us-gaap_SwapMember | (50,526)us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeByNatureAxis = us-gaap_SwapMember | 10,944 us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeByNatureAxis = us-gaap_SwapMember
Re-purchased swaps |  |  |  |  |  |  |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) Recognized in Income (Non-hedge Derivatives) |  |  |  |  |  |  |  |  |  | 1,323 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = rrc_RepurchasedSwapsMember | 9,313 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = rrc_RepurchasedSwapsMember
Derivative Fair Value Income (Loss) |  |  |  |  |  |  |  |  |  | 1,323 us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeByNatureAxis = rrc_RepurchasedSwapsMember | 9,313 us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeByNatureAxis = rrc_RepurchasedSwapsMember
Collars |  |  |  |  |  |  |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) Recognized in Income (Non-hedge Derivatives) |  |  |  |  |  |  |  |  | 42,836 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = rrc_CollarsMember | (15,166)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = rrc_CollarsMember | 5,126 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = rrc_CollarsMember
Gain (Loss) Recognized in Income (Ineffective Portion) |  |  |  |  |  |  |  |  |  | (896)us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet / us-gaap_DerivativeByNatureAxis = rrc_CollarsMember | 1,782 us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet / us-gaap_DerivativeByNatureAxis = rrc_CollarsMember
Derivative Fair Value Income (Loss) |  |  |  |  |  |  |  |  | 42,836 us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeByNatureAxis = rrc_CollarsMember | (16,062)us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeByNatureAxis = rrc_CollarsMember | 6,908 us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeByNatureAxis = rrc_CollarsMember
Basis Swaps |  |  |  |  |  |  |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) Recognized in Income (Non-hedge Derivatives) |  |  |  |  |  |  |  |  | (26,800)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = us-gaap_BasisSwapMember | 3,440 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = us-gaap_BasisSwapMember | 1,124 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeByNatureAxis = us-gaap_BasisSwapMember
Derivative Fair Value Income (Loss) |  |  |  |  |  |  |  |  | (26,800)us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeByNatureAxis = us-gaap_BasisSwapMember | 3,440 us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeByNatureAxis = us-gaap_BasisSwapMember | 1,124 us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeByNatureAxis = us-gaap_BasisSwapMember
Call options |  |  |  |  |  |  |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) Recognized in Income (Non-hedge Derivatives) |  |  |  |  |  |  |  |  |  |  | 13,178 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CallOptionMember
Derivative Fair Value Income (Loss) |  |  |  |  |  |  |  |  |  |  | 13,178 us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CallOptionMember
Put options |  |  |  |  |  |  |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) Recognized in Income (Non-hedge Derivatives) |  |  |  |  |  |  |  |  |  |  | (30)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_PutOptionMember
Derivative Fair Value Income (Loss) |  |  |  |  |  |  |  |  |  |  | $ (30)us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_PutOptionMember

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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- Definition The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1),(2) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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