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Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Parenthetical) (Detail) (Senior Subordinated Notes)
Dec. 31, 2014
Dec. 31, 2013
8.00% Senior Subordinated Notes Due 2019
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Interest rate on senior subordinated notes 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= rrc_EightPercentTwoThousandNineteenMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember		 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= rrc_EightPercentTwoThousandNineteenMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember
6.75% Senior Subordinated Notes Due 2020
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Interest rate on senior subordinated notes 6.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= rrc_SixPointSevenFivePercentTwoThousandTwentyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember		 6.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= rrc_SixPointSevenFivePercentTwoThousandTwentyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember
5.75% Senior Subordinated Notes Due 2021
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Interest rate on senior subordinated notes 5.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= rrc_FivePointSevenFivePercentTwoThousandTwentyOneMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember		 5.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= rrc_FivePointSevenFivePercentTwoThousandTwentyOneMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember
5.00% Senior Subordinated Notes Due 2022
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Interest rate on senior subordinated notes 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= rrc_FivePercentTwoThousandTwentyTwoMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember		 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= rrc_FivePercentTwoThousandTwentyTwoMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember
5.00% Senior Subordinated Notes Due 2023
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Interest rate on senior subordinated notes 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= rrc_FivePercentTwoThousandTwentyThreeMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember		 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= rrc_FivePercentTwoThousandTwentyThreeMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember