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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) | 0 Months Ended | 12 Months Ended
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Jun. 16, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Income (Loss) from equity method investments | $ 0 us-gaap_IncomeLossFromEquityMethodInvestments | $ (3,095,000)us-gaap_IncomeLossFromEquityMethodInvestments | $ 2,973,000 us-gaap_IncomeLossFromEquityMethodInvestments | $ (5,670,000)us-gaap_IncomeLossFromEquityMethodInvestments
Brokered margin gain (loss) |  | 9,400,000 rrc_NetBrokeredNaturalGasMargin | (5,700,000)rrc_NetBrokeredNaturalGasMargin |
Allowance for doubtful accounts on accounts receivable |  | 2,719,000 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | 2,494,000 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent |
Bad debt expense |  | 250,000 us-gaap_ProvisionForDoubtfulAccounts | 250,000 us-gaap_ProvisionForDoubtfulAccounts | 750,000 us-gaap_ProvisionForDoubtfulAccounts
Liability due to insufficient reserves |  | 52,000 us-gaap_GasImbalanceAssetLiability |  |
Inventory, other |  | 17,854,000 us-gaap_InventoryNet | 12,451,000 us-gaap_InventoryNet |
Inventory, other |  | 2,000,000 us-gaap_EnergyRelatedInventoryPropaneGas | 0 us-gaap_EnergyRelatedInventoryPropaneGas |
Materials and supplies inventory |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Inventory, other |  | $ 11,800,000 us-gaap_InventoryNet / us-gaap_PublicUtilitiesInventoryAxis = rrc_MaterialsAndSuppliesInventoryMember | $ 9,600,000 us-gaap_InventoryNet / us-gaap_PublicUtilitiesInventoryAxis = rrc_MaterialsAndSuppliesInventoryMember |

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- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) 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 Carrying amount as of the balance sheet date of product derived from petroleum during the processing of oil or natural gas which is then used as a heat source or fuel. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a -Article 5 + Details
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- Definition The value of gas balancing asset or liability as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e512571-122862 + Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.12) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 + Details
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 + Details
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