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Derivative Activities - Additional Information (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2014 Institution Counterparty | Dec. 31, 2013 | Dec. 31, 2012
Derivative [Line Items] |  |  |
Gain (Loss) Recognized in Income (Ineffective Portion) | $ 0 us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet | $ (2,930,000)us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet | $ 1,125,000 us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet
Number of financial institutions with whom we conduct derivative activities | 15 rrc_NumberOfFinancialInstitutionsWithWhomWeConductDerivativeActivities |  |
Number of secured lenders not in banking credit facility | 1 rrc_NumberOfCounterPartiesNotIncludedInBankCreditFacility |  |
Basis Swaps |  |  |
Derivative [Line Items] |  |  |
Derivative assets liabilities at fair value net | 1,700,000 us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet / us-gaap_DerivativeByNatureAxis = us-gaap_BasisSwapMember |  |
Volume Hedged | 35,164 invest_DerivativeNonmonetaryNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_BasisSwapMember |  |
Designated as Hedging Instrument |  |  |
Derivative [Line Items] |  |  |
Gains (Losses) in oil and gas sales related to settled hedging transactions | 10,200,000 rrc_RealizedGainLossOnCashFlowHedgingInstruments / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember | 116,500,000 rrc_RealizedGainLossOnCashFlowHedgingInstruments / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember | 236,300,000 rrc_RealizedGainLossOnCashFlowHedgingInstruments / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember
Not Designated as Hedging Instrument |  |  |
Derivative [Line Items] |  |  |
Accumulated other comprehensive income, net gains | 103,600,000 us-gaap_DerivativeInstrumentsGainRecognizedInOtherComprehensiveIncomeEffectivePortion / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember |  |
Accumulated other comprehensive income, net gains, after tax | 63,200,000 us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember |  |
Derivatives Excluding Basis Swaps |  |  |
Derivative [Line Items] |  |  |
Derivative assets liabilities at fair value net | $ 401,700,000 us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet / us-gaap_DerivativeInstrumentRiskAxis = rrc_DerivativesExcludingBasisSwapsMember |  |

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- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Number of counter parties not included in bank credit facility. + References No definition available. + Details
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- Definition Number of financial institutions with whom we conduct derivative activities. + References No definition available. + Details
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- Definition Realized gain loss on cash flow hedging instruments. + References No definition available. + Details
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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + 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 The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + 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 (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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- Definition The effective portion of gains on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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