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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Costs Incurred for Property Acquisition, Exploration and Development (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities [Line Items] |  |  |  |  |  |
Acquisitions | $ 404,252 rrc_CostsIncurredAcquisitionOfOilAndGasPropertiesFromBusinessCombination | [1],[2] |  |  |  |
Acreage purchases | 226,475 us-gaap_CostsIncurredAcquisitionOfOilAndGasProperties | [1] | 137,538 us-gaap_CostsIncurredAcquisitionOfOilAndGasProperties | [1] | 188,843 us-gaap_CostsIncurredAcquisitionOfOilAndGasProperties | [1]
Development | 1,119,896 us-gaap_CostsIncurredDevelopmentCosts | [1] | 938,668 us-gaap_CostsIncurredDevelopmentCosts | [1] | 1,049,129 us-gaap_CostsIncurredDevelopmentCosts | [1]
Gas gathering facilities: |  |  |  |  |  |
Development | 13,137 rrc_CostIncurredTransportationAndFieldEquipmentCosts | [1] | 47,086 rrc_CostIncurredTransportationAndFieldEquipmentCosts | [1] | 41,035 rrc_CostIncurredTransportationAndFieldEquipmentCosts | [1]
Subtotal | 2,008,233 rrc_CostIncurredOfOilAndGasProperties | [1] | 1,377,443 rrc_CostIncurredOfOilAndGasProperties | [1] | 1,658,630 rrc_CostIncurredOfOilAndGasProperties | [1]
Asset retirement obligations | 56,822 us-gaap_CostsIncurredAssetRetirementObligationIncurred | [1] | 76,373 us-gaap_CostsIncurredAssetRetirementObligationIncurred | [1] | 57,982 us-gaap_CostsIncurredAssetRetirementObligationIncurred | [1]
Total costs incurred | 2,065,055 us-gaap_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities | [1] | 1,453,816 us-gaap_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities | [1] | 1,716,612 us-gaap_CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities | [1]
Drilling |  |  |  |  |  |
Exploration: |  |  |  |  |  |
Exploration costs incurred | 180,925 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_DrillingCostMember | [1] | 189,742 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_DrillingCostMember | [1] | 309,816 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_DrillingCostMember | [1]
Expense |  |  |  |  |  |
Exploration: |  |  |  |  |  |
Exploration costs incurred | 58,979 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_ExpenseMember | [1] | 60,384 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_ExpenseMember | [1] | 65,758 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_ExpenseMember | [1]
Stock-based compensation expense |  |  |  |  |  |
Exploration: |  |  |  |  |  |
Exploration costs incurred | $ 4,569 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_StockBasedCompensationExpenseMember | [1] | $ 4,025 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_StockBasedCompensationExpenseMember | [1] | $ 4,049 us-gaap_CostsIncurredExplorationCosts / us-gaap_NatureOfExpenseAxis = rrc_StockBasedCompensationExpenseMember | [1]
[1] | Includes cost incurred whether capitalized or expensed.
[2] | See also Note 3 for additional information related to the Conger Exchange which includes $134.8 million of gas gathering assets received in the exchange and $11.9 million of asset retirement obligations added in the exchange.

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