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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Standardized Measure of Discounted Future Net Cash Flows (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014
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Extractive Industries [Abstract] |
Undiscounted future asset retirement costs estimation | $ 439.6 rrc_UndiscountedFutureNetCashFlowsRelatingToProvedOilAndGasAssetRetirementCostsEstimation

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- Definition Undiscounted future net cash flows relating to proved oil and gas asset retirement costs estimation. + References No definition available. + Details
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Namespace Prefix: | rrc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_ExtractiveIndustriesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration