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Summary of Significant Accounting Policies - Additional Information 2 (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Counterparty
Customer
Dec. 31, 2013
Customer
Dec. 31, 2012
Customer
Summary Of Significant Accounting Policies [Line Items]      
Allowance for uncollectible receivables $ 2.7us-gaap_AllowanceForDoubtfulAccountsReceivable $ 2.5us-gaap_AllowanceForDoubtfulAccountsReceivable  
Number of customers accounted more than 10% of total oil and gas revenues 4rrc_NumberOfCustomersAccountedMoreThanTenPercentOfOilAndGasRevenues 4rrc_NumberOfCustomersAccountedMoreThanTenPercentOfOilAndGasRevenues 2rrc_NumberOfCustomersAccountedMoreThanTenPercentOfOilAndGasRevenues
Net derivative asset $ 30.3rrc_ValueOfNetDerivativeAssetFromCounterpartiesNotInCreditFacility    
Number of counterparties 1rrc_NumberOfCounterPartiesNotIncludedInBankCreditFacility    
Total Number of Derivative Counterparties 15rrc_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