Quarterly report pursuant to Section 13 or 15(d)

Organization (Details)

v2.4.1.9
Organization (Details) (USD $)
3 Months Ended 27 Months Ended 0 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Oct. 16, 2013
Dec. 31, 2014
Oct. 15, 2013
Jun. 30, 2013
Corporate reorganization and initial public offering              
Common stock, shares issued 276,775,293us-gaap_CommonStockSharesIssued   276,775,293us-gaap_CommonStockSharesIssued   262,071,642us-gaap_CommonStockSharesIssued 224,375,000us-gaap_CommonStockSharesIssued  
Common stock, shares outstanding 276,775,293us-gaap_CommonStockSharesOutstanding   276,775,293us-gaap_CommonStockSharesOutstanding   276,071,642us-gaap_CommonStockSharesOutstanding    
Number of additional shares of common stock issued (in shares) 14,700,000us-gaap_StockIssuedDuringPeriodSharesNewIssues            
Net proceeds from issuance of additional shares of common stock $ 537,875,000us-gaap_ProceedsFromIssuanceOfCommonStock            
Stock Compensation Charge in Connection with the Reorganization              
Equity based compensation expense recognized 27,783,000us-gaap_ShareBasedCompensation 29,137,000us-gaap_ShareBasedCompensation          
Midstream Credit Facility              
Stock Compensation Charge in Connection with the Reorganization              
Maximum amount of the Credit Facility 1,000,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_LongtermDebtTypeAxis
= ar_MidstreamCreditFacilityMember
  1,000,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_LongtermDebtTypeAxis
= ar_MidstreamCreditFacilityMember
       
Profits interests awards              
Stock Compensation Charge in Connection with the Reorganization              
Equity based compensation expense recognized 14,718,000us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= ar_MembershipInterestsAwardsMember
28,689,000us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= ar_MembershipInterestsAwardsMember
463,000,000us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= ar_MembershipInterestsAwardsMember
       
Additional stock compensation to be recognized over the remaining service period 23,000,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= ar_MembershipInterestsAwardsMember
           
Initial Public Offering              
Corporate reorganization and initial public offering              
Number of additional shares of common stock issued (in shares)       37,674,659us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_TransactionTypeAxis
= us-gaap_IPOMember
     
Common stock price (in dollars per share)       $ 44.00us-gaap_SharesIssuedPricePerShare
/ us-gaap_TransactionTypeAxis
= us-gaap_IPOMember
     
Net proceeds from issuance of additional shares of common stock       $ 1,600,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_TransactionTypeAxis
= us-gaap_IPOMember
     
Antero Resources LLC              
Corporate reorganization and initial public offering              
Ownership percentage             100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= ar_AnteroResourcesLLCMember
Antero Investment              
Corporate reorganization and initial public offering              
Ownership percentage           100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= ar_AnteroResourcesInvestmentLLCMember