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Summary of Significant Accounting Policies - Additional Information 2 (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 Counterparty Customer | Dec. 31, 2013 Customer | Dec. 31, 2012 Customer
Summary Of Significant Accounting Policies [Line Items] |  |  |
Allowance for uncollectible receivables | $ 2.7 us-gaap_AllowanceForDoubtfulAccountsReceivable | $ 2.5 us-gaap_AllowanceForDoubtfulAccountsReceivable |
Number of customers accounted more than 10% of total oil and gas revenues | 4 rrc_NumberOfCustomersAccountedMoreThanTenPercentOfOilAndGasRevenues | 4 rrc_NumberOfCustomersAccountedMoreThanTenPercentOfOilAndGasRevenues | 2 rrc_NumberOfCustomersAccountedMoreThanTenPercentOfOilAndGasRevenues
Net derivative asset | $ 30.3 rrc_ValueOfNetDerivativeAssetFromCounterpartiesNotInCreditFacility |  |
Number of counterparties | 1 rrc_NumberOfCounterPartiesNotIncludedInBankCreditFacility |  |
Total Number of Derivative Counterparties | 15 rrc_NumberOfDerivativeCounterparties |  |
Customer Concentration Risk | Minimum | Sales revenue |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Minimum percentage of oil and gas sales revenue for identifying major customer | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_RangeAxis = us-gaap_MinimumMember | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_RangeAxis = us-gaap_MinimumMember | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_RangeAxis = us-gaap_MinimumMember

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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 customers accounted more than ten percent of total oil and gas revenues. + References No definition available. + Details
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- Definition Number of financial institutions that the Company has derivative contracts with. + References No definition available. + Details
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- Definition Value of net derivative asset from counterparties not in credit facility. + References No definition available. + Details
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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
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