Quarterly report pursuant to Section 13 or 15(d)

Subsidiary Guarantors (Details)

v2.4.1.9
Subsidiary Guarantors (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Dec. 31, 2013
Current assets:        
Cash and cash equivalents $ 185,491us-gaap_CashAndCashEquivalentsAtCarryingValue $ 245,979us-gaap_CashAndCashEquivalentsAtCarryingValue $ 12,580us-gaap_CashAndCashEquivalentsAtCarryingValue $ 17,487us-gaap_CashAndCashEquivalentsAtCarryingValue
Accounts receivable, net 118,410us-gaap_AccountsReceivableNetCurrent 116,203us-gaap_AccountsReceivableNetCurrent    
Accrued revenue 165,904us-gaap_AccruedFeesAndOtherRevenueReceivable 191,558us-gaap_AccruedFeesAndOtherRevenueReceivable    
Derivative instruments 713,966us-gaap_DerivativeAssetsCurrent 692,554us-gaap_DerivativeAssetsCurrent    
Other current assets 4,259us-gaap_OtherAssetsMiscellaneousCurrent 5,866us-gaap_OtherAssetsMiscellaneousCurrent    
Total current assets 1,188,030us-gaap_AssetsCurrent 1,252,160us-gaap_AssetsCurrent    
Unproved properties 2,053,669us-gaap_UnprovedOilAndGasPropertySuccessfulEffortMethod 2,060,936us-gaap_UnprovedOilAndGasPropertySuccessfulEffortMethod    
Proved properties 7,013,366us-gaap_ProvedOilAndGasPropertySuccessfulEffortMethod 6,515,221us-gaap_ProvedOilAndGasPropertySuccessfulEffortMethod    
Fresh water distribution systems 433,632ar_CapitalizedCostsFreshWaterDistributionSystems 421,012ar_CapitalizedCostsFreshWaterDistributionSystems    
Gathering systems and facilities 1,270,635us-gaap_CapitalizedCostsWellsAndRelatedEquipmentAndFacilities 1,197,239us-gaap_CapitalizedCostsWellsAndRelatedEquipmentAndFacilities    
Other property and equipment 41,136us-gaap_PropertyPlantAndEquipmentOther 37,687us-gaap_PropertyPlantAndEquipmentOther    
Property and equipment, gross 10,812,438us-gaap_PropertyPlantAndEquipmentGross 10,232,095us-gaap_PropertyPlantAndEquipmentGross    
Less accumulated depletion, depreciation, and amortization (1,061,943)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (879,643)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment    
Property and equipment, net 9,750,495us-gaap_PropertyPlantAndEquipmentNet 9,352,452us-gaap_PropertyPlantAndEquipmentNet    
Derivative instruments 1,453,300us-gaap_DerivativeAssetsNoncurrent 899,997us-gaap_DerivativeAssetsNoncurrent    
Other assets, net 90,126us-gaap_OtherAssetsNoncurrent 68,886us-gaap_OtherAssetsNoncurrent    
Total assets 12,481,951us-gaap_Assets 11,573,495us-gaap_Assets 7,134,457us-gaap_Assets  
Liabilities and Stockholders' Equity        
Accounts payable 352,477us-gaap_AccountsPayableCurrent 531,564us-gaap_AccountsPayableCurrent    
Accrued liabilities 235,069us-gaap_AccruedLiabilitiesCurrent 168,614us-gaap_AccruedLiabilitiesCurrent    
Revenue distributions payable 183,455ar_RevenueDistributionsPayableCurrent 182,352ar_RevenueDistributionsPayableCurrent    
Deferred income tax liability 269,822us-gaap_DeferredTaxLiabilitiesCurrent 260,373us-gaap_DeferredTaxLiabilitiesCurrent    
Other current liabilities 13,170us-gaap_OtherLiabilitiesCurrent 12,202us-gaap_OtherLiabilitiesCurrent    
Total current liabilities 1,053,993us-gaap_LiabilitiesCurrent 1,155,105us-gaap_LiabilitiesCurrent    
Long-term debt 4,172,295us-gaap_LongTermNotesPayable 4,362,550us-gaap_LongTermNotesPayable    
Deferred income tax liability 772,312us-gaap_DeferredTaxLiabilitiesNoncurrent 534,423us-gaap_DeferredTaxLiabilitiesNoncurrent    
Other liabilities 49,076us-gaap_OtherLiabilitiesNoncurrent 47,587us-gaap_OtherLiabilitiesNoncurrent    
Total liabilities 6,047,676us-gaap_Liabilities 6,099,665us-gaap_Liabilities    
Common stock 2,768us-gaap_CommonStockValue 2,621us-gaap_CommonStockValue    
Additional paid-in capital 4,078,068us-gaap_AdditionalPaidInCapital 3,513,725us-gaap_AdditionalPaidInCapital    
Accumulated earnings 1,261,878us-gaap_RetainedEarningsAccumulatedDeficit 867,447us-gaap_RetainedEarningsAccumulatedDeficit    
Total stockholders' equity 5,342,714us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 4,383,793us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest    
Noncontrolling interest in consolidated subsidiary 1,091,561us-gaap_MinorityInterest 1,090,037us-gaap_MinorityInterest    
Total equity 6,434,275us-gaap_StockholdersEquity 5,473,830us-gaap_StockholdersEquity    
Total liabilities and equity 12,481,951us-gaap_LiabilitiesAndStockholdersEquity 11,573,495us-gaap_LiabilitiesAndStockholdersEquity    
Eliminations        
Current assets:        
Intercompany receivables (20,837)us-gaap_DueFromAffiliateCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(19,026)us-gaap_DueFromAffiliateCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Other current assets (1)us-gaap_OtherAssetsMiscellaneousCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1)us-gaap_OtherAssetsMiscellaneousCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Total current assets (20,838)us-gaap_AssetsCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(19,027)us-gaap_AssetsCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Investment in subsidiaries (121,849)us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(137,423)us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Total assets (142,687)us-gaap_Assets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(156,450)us-gaap_Assets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Liabilities and Stockholders' Equity        
Intercompany payable (20,838)us-gaap_DueToAffiliateCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(19,026)us-gaap_DueToAffiliateCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Other current liabilities (1)us-gaap_OtherLiabilitiesCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1)us-gaap_OtherLiabilitiesCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Total current liabilities (20,839)us-gaap_LiabilitiesCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(19,027)us-gaap_LiabilitiesCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Total liabilities (20,839)us-gaap_Liabilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(19,027)us-gaap_Liabilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Parent net investment 134,999ar_ParentNetInvestment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
114,999ar_ParentNetInvestment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Partners' capital (1,348,408)us-gaap_PartnersCapital
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,342,459)us-gaap_PartnersCapital
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Total stockholders' equity (1,213,409)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(1,227,460)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Noncontrolling interest in consolidated subsidiary 1,091,561us-gaap_MinorityInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
1,090,037us-gaap_MinorityInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Total equity (121,848)us-gaap_StockholdersEquity
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(137,423)us-gaap_StockholdersEquity
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Total liabilities and equity (142,687)us-gaap_LiabilitiesAndStockholdersEquity
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
(156,450)us-gaap_LiabilitiesAndStockholdersEquity
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
   
Antero Resources Corp        
Current assets:        
Cash and cash equivalents 23,152us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Accounts receivable, net 118,410us-gaap_AccountsReceivableNetCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Intercompany receivables 2,021us-gaap_DueFromAffiliateCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Accrued revenue 165,904us-gaap_AccruedFeesAndOtherRevenueReceivable
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Derivative instruments 713,966us-gaap_DerivativeAssetsCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Other current assets 3,903us-gaap_OtherAssetsMiscellaneousCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Total current assets 1,027,356us-gaap_AssetsCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Unproved properties 2,053,669us-gaap_UnprovedOilAndGasPropertySuccessfulEffortMethod
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Proved properties 7,013,366us-gaap_ProvedOilAndGasPropertySuccessfulEffortMethod
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Fresh water distribution systems 433,632ar_CapitalizedCostsFreshWaterDistributionSystems
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Gathering systems and facilities 16,558us-gaap_CapitalizedCostsWellsAndRelatedEquipmentAndFacilities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Other property and equipment 41,136us-gaap_PropertyPlantAndEquipmentOther
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Property and equipment, gross 9,558,361us-gaap_PropertyPlantAndEquipmentGross
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Less accumulated depletion, depreciation, and amortization (996,251)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Property and equipment, net 8,562,110us-gaap_PropertyPlantAndEquipmentNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Derivative instruments 1,453,300us-gaap_DerivativeAssetsNoncurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Investment in subsidiaries 121,849us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Other assets, net 65,673us-gaap_OtherAssetsNoncurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Total assets 11,230,288us-gaap_Assets
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Liabilities and Stockholders' Equity        
Accounts payable 318,740us-gaap_AccountsPayableCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Intercompany payable 18,817us-gaap_DueToAffiliateCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Accrued liabilities 224,886us-gaap_AccruedLiabilitiesCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Revenue distributions payable 183,455ar_RevenueDistributionsPayableCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Deferred income tax liability 269,822us-gaap_DeferredTaxLiabilitiesCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Other current liabilities 13,171us-gaap_OtherLiabilitiesCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Total current liabilities 1,028,891us-gaap_LiabilitiesCurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Long-term debt 4,037,295us-gaap_LongTermNotesPayable
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Deferred income tax liability 772,312us-gaap_DeferredTaxLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Other liabilities 49,076us-gaap_OtherLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Total liabilities 5,887,574us-gaap_Liabilities
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Common stock 2,768us-gaap_CommonStockValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Additional paid-in capital 4,078,068us-gaap_AdditionalPaidInCapital
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Accumulated earnings 1,261,878us-gaap_RetainedEarningsAccumulatedDeficit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Total stockholders' equity 5,342,714us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Total equity 5,342,714us-gaap_StockholdersEquity
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Total liabilities and equity 11,230,288us-gaap_LiabilitiesAndStockholdersEquity
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
     
Antero Resources Corp | Reportable legal entity        
Current assets:        
Cash and cash equivalents 23,152us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
15,787us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Accounts receivable, net   116,203us-gaap_AccountsReceivableNetCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Intercompany receivables   1,380us-gaap_DueFromAffiliateCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Accrued revenue   191,558us-gaap_AccruedFeesAndOtherRevenueReceivable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Derivative instruments   692,554us-gaap_DerivativeAssetsCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Other current assets   5,348us-gaap_OtherAssetsMiscellaneousCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Total current assets   1,022,830us-gaap_AssetsCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Unproved properties   2,060,936us-gaap_UnprovedOilAndGasPropertySuccessfulEffortMethod
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Proved properties   6,515,221us-gaap_ProvedOilAndGasPropertySuccessfulEffortMethod
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Fresh water distribution systems   421,012ar_CapitalizedCostsFreshWaterDistributionSystems
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Gathering systems and facilities   16,532us-gaap_CapitalizedCostsWellsAndRelatedEquipmentAndFacilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Other property and equipment   37,687us-gaap_PropertyPlantAndEquipmentOther
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Property and equipment, gross   9,051,388us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Less accumulated depletion, depreciation, and amortization   (828,533)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Property and equipment, net   8,222,855us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Derivative instruments   899,997us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Investment in subsidiaries   137,423us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Other assets, net   51,718us-gaap_OtherAssetsNoncurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Total assets   10,334,823us-gaap_Assets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Liabilities and Stockholders' Equity        
Accounts payable   485,628us-gaap_AccountsPayableCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Intercompany payable   17,646us-gaap_DueToAffiliateCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Accrued liabilities   163,268us-gaap_AccruedLiabilitiesCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Revenue distributions payable   182,352ar_RevenueDistributionsPayableCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Deferred income tax liability   260,373us-gaap_DeferredTaxLiabilitiesCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Other current liabilities   12,203us-gaap_OtherLiabilitiesCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Total current liabilities   1,121,470us-gaap_LiabilitiesCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Long-term debt   4,247,550us-gaap_LongTermNotesPayable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Deferred income tax liability   534,423us-gaap_DeferredTaxLiabilitiesNoncurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Other liabilities   47,587us-gaap_OtherLiabilitiesNoncurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Total liabilities   5,951,030us-gaap_Liabilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Common stock   2,621us-gaap_CommonStockValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Additional paid-in capital   3,513,725us-gaap_AdditionalPaidInCapital
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Accumulated earnings   867,447us-gaap_RetainedEarningsAccumulatedDeficit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Total stockholders' equity   4,383,793us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Total equity   4,383,793us-gaap_StockholdersEquity
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Total liabilities and equity   10,334,823us-gaap_LiabilitiesAndStockholdersEquity
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
   
Guarantor Subsidiaries        
Current assets:        
Other current assets 1us-gaap_OtherAssetsMiscellaneousCurrent
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
     
Total current assets 1us-gaap_AssetsCurrent
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
     
Total assets 1us-gaap_Assets
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
     
Liabilities and Stockholders' Equity        
Long-term debt 135,000us-gaap_LongTermNotesPayable
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
     
Total liabilities 135,000us-gaap_Liabilities
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
     
Parent net investment (134,999)ar_ParentNetInvestment
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
     
Total stockholders' equity (134,999)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
     
Total equity (134,999)us-gaap_StockholdersEquity
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
     
Total liabilities and equity 1us-gaap_LiabilitiesAndStockholdersEquity
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
     
Guarantor Subsidiaries | Reportable legal entity        
Current assets:        
Other current assets   1us-gaap_OtherAssetsMiscellaneousCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Total current assets   1us-gaap_AssetsCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Total assets   1us-gaap_Assets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Liabilities and Stockholders' Equity        
Long-term debt   115,000us-gaap_LongTermNotesPayable
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Total liabilities   115,000us-gaap_Liabilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Parent net investment   (114,999)ar_ParentNetInvestment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Total stockholders' equity   (114,999)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Total equity   (114,999)us-gaap_StockholdersEquity
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Total liabilities and equity   1us-gaap_LiabilitiesAndStockholdersEquity
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
   
Non-Guarantor Subsidiaries        
Current assets:        
Cash and cash equivalents 162,339us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Intercompany receivables 18,816us-gaap_DueFromAffiliateCurrent
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Other current assets 356us-gaap_OtherAssetsMiscellaneousCurrent
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Total current assets 181,511us-gaap_AssetsCurrent
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Gathering systems and facilities 1,254,077us-gaap_CapitalizedCostsWellsAndRelatedEquipmentAndFacilities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Property and equipment, gross 1,254,077us-gaap_PropertyPlantAndEquipmentGross
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Less accumulated depletion, depreciation, and amortization (65,692)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Property and equipment, net 1,188,385us-gaap_PropertyPlantAndEquipmentNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Other assets, net 24,453us-gaap_OtherAssetsNoncurrent
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Total assets 1,394,349us-gaap_Assets
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Liabilities and Stockholders' Equity        
Accounts payable 33,737us-gaap_AccountsPayableCurrent
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Intercompany payable 2,021us-gaap_DueToAffiliateCurrent
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Accrued liabilities 10,183us-gaap_AccruedLiabilitiesCurrent
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Total current liabilities 45,941us-gaap_LiabilitiesCurrent
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Total liabilities 45,941us-gaap_Liabilities
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Partners' capital 1,348,408us-gaap_PartnersCapital
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Total stockholders' equity 1,348,408us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Total equity 1,348,408us-gaap_StockholdersEquity
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Total liabilities and equity 1,394,349us-gaap_LiabilitiesAndStockholdersEquity
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
     
Non-Guarantor Subsidiaries | Reportable legal entity        
Current assets:        
Cash and cash equivalents 162,339us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
230,192us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Intercompany receivables   17,646us-gaap_DueFromAffiliateCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Other current assets   518us-gaap_OtherAssetsMiscellaneousCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Total current assets   248,356us-gaap_AssetsCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Gathering systems and facilities   1,180,707us-gaap_CapitalizedCostsWellsAndRelatedEquipmentAndFacilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Property and equipment, gross   1,180,707us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Less accumulated depletion, depreciation, and amortization   (51,110)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Property and equipment, net   1,129,597us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Other assets, net   17,168us-gaap_OtherAssetsNoncurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Total assets   1,395,121us-gaap_Assets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Liabilities and Stockholders' Equity        
Accounts payable   45,936us-gaap_AccountsPayableCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Intercompany payable   1,380us-gaap_DueToAffiliateCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Accrued liabilities   5,346us-gaap_AccruedLiabilitiesCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Total current liabilities   52,662us-gaap_LiabilitiesCurrent
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Total liabilities   52,662us-gaap_Liabilities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Partners' capital   1,342,459us-gaap_PartnersCapital
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Total stockholders' equity   1,342,459us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Total equity   1,342,459us-gaap_StockholdersEquity
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
   
Total liabilities and equity   $ 1,395,121us-gaap_LiabilitiesAndStockholdersEquity
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember