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Income Taxes - Additional Information (Detail) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Taxes [Line Items]                      
Income tax expense $ 166,048,000us-gaap_IncomeTaxExpenseBenefit $ 93,522,000us-gaap_IncomeTaxExpenseBenefit $ 117,976,000us-gaap_IncomeTaxExpenseBenefit $ 18,957,000us-gaap_IncomeTaxExpenseBenefit $ (28,323,000)us-gaap_IncomeTaxExpenseBenefit $ 11,866,000us-gaap_IncomeTaxExpenseBenefit $ 97,494,000us-gaap_IncomeTaxExpenseBenefit $ (47,180,000)us-gaap_IncomeTaxExpenseBenefit $ 396,503,000us-gaap_IncomeTaxExpenseBenefit $ 33,857,000us-gaap_IncomeTaxExpenseBenefit $ 12,054,000us-gaap_IncomeTaxExpenseBenefit
Net deferred tax assets (liabilities) (1,113,082,000)us-gaap_DeferredTaxAssetsLiabilitiesNet       (720,566,000)us-gaap_DeferredTaxAssetsLiabilitiesNet       (1,113,082,000)us-gaap_DeferredTaxAssetsLiabilitiesNet (720,566,000)us-gaap_DeferredTaxAssetsLiabilitiesNet  
Deductible limit 1,000,000rrc_IRCDeductibleLimit               1,000,000rrc_IRCDeductibleLimit    
Regular net operating loss carryforwards 641,400,000us-gaap_OperatingLossCarryforwards               641,400,000us-gaap_OperatingLossCarryforwards    
Alternative minimum tax carryforwards 557,300,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax               557,300,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax    
Deferred tax asset related to regular NOL 130,800,000rrc_DeferredTaxAssetRelatedToNolCarryforwardNetOfStockCompensationReductionForUnrealizedBenefits               130,800,000rrc_DeferredTaxAssetRelatedToNolCarryforwardNetOfStockCompensationReductionForUnrealizedBenefits    
Accrued interest or penalties related to tax amounts 0us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued               0us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued    
Minimum                      
Income Taxes [Line Items]                      
Period during which net operating loss carryforwards and alternative minimum tax expire                 Dec. 31, 2018    
Maximum                      
Income Taxes [Line Items]                      
Period during which net operating loss carryforwards and alternative minimum tax expire                 Dec. 31, 2034    
Oklahoma                      
Income Taxes [Line Items]                      
Valuation allowance on the deferred compensation plan 8,800,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_IncomeTaxAuthorityAxis
= stpr_OK
              8,800,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_IncomeTaxAuthorityAxis
= stpr_OK
   
Deferred compensation plan                      
Income Taxes [Line Items]                      
Valuation allowance on the deferred compensation plan 7,800,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_DeferredCompensationShareBasedPaymentsMember
              7,800,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_TaxCreditCarryforwardAxis
= us-gaap_DeferredCompensationShareBasedPaymentsMember
   
Alternative Minimum Tax                      
Income Taxes [Line Items]                      
AMT credit carryforwards that are not subject to limitation or expiration $ 665,000us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= rrc_AlternativeMinimumTaxMember
              $ 665,000us-gaap_TaxCreditCarryforwardAmount
/ us-gaap_TaxCreditCarryforwardAxis
= rrc_AlternativeMinimumTaxMember