Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments (Details 2)

v2.4.1.9
Derivative Instruments (Details 2) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
item
Fair value of derivative instruments      
Current portion of fair value of derivative assets $ 713,966us-gaap_DerivativeAssetsCurrent $ 692,554us-gaap_DerivativeAssetsCurrent  
Noncurrent portion of fair value of derivative assets 1,453,300us-gaap_DerivativeAssetsNoncurrent 899,997us-gaap_DerivativeAssetsNoncurrent  
Net fair value of commodity derivative assets position      
Fair value of derivative instruments      
Total asset derivatives 2,167,266us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
1,592,551us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
 
Antero Resources Corp      
Fair value of derivative instruments      
Current portion of fair value of derivative assets 713,966us-gaap_DerivativeAssetsCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Noncurrent portion of fair value of derivative assets 1,453,300us-gaap_DerivativeAssetsNoncurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Derivatives not designated as hedges for accounting purposes | Net fair value of commodity derivative assets position      
Fair value of derivative instruments      
Current portion of fair value of derivative assets 713,966us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
692,554us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
 
Noncurrent portion of fair value of derivative assets 1,453,300us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
899,997us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
 
Net derivatives $ 2,167,266us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
$ 1,592,551us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
 
Derivatives designated as hedges for accounting purposes      
Fair value of derivative instruments      
Number of derivative instruments held     0us-gaap_DerivativeNumberOfInstrumentsHeld
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember