Quarterly report pursuant to Section 13 or 15(d)

Subsidiary Guarantor (Details 3)

v2.4.1.9
Subsidiary Guarantor (Details 3) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Condensed consolidated statement of cash flows    
Net cash provided by operating activities $ 351,394us-gaap_NetCashProvidedByUsedInOperatingActivities $ 274,307us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash flows used in investing activities:    
Additions to unproved properties (51,541)us-gaap_PaymentsToAcquireOilAndGasProperty (60,149)us-gaap_PaymentsToAcquireOilAndGasProperty
Drilling and completion costs (569,068)us-gaap_PaymentsToExploreAndDevelopOilAndGasProperties (496,221)us-gaap_PaymentsToExploreAndDevelopOilAndGasProperties
Additions to fresh water distribution systems (22,126)us-gaap_PaymentsToAcquireWaterSystems (60,030)us-gaap_PaymentsToAcquireWaterSystems
Additions to gathering systems and facilities (125,988)us-gaap_PaymentsToAcquireOilAndGasEquipment (107,523)us-gaap_PaymentsToAcquireOilAndGasEquipment
Additions to other property and equipment (2,103)us-gaap_PaymentsToAcquireOtherPropertyPlantAndEquipment (7,783)us-gaap_PaymentsToAcquireOtherPropertyPlantAndEquipment
Change in other assets (8,410)us-gaap_PaymentsForProceedsFromOtherInvestingActivities (3,807)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Proceeds from asset sales 40,000us-gaap_ProceedsFromSaleOfProductiveAssets  
Net cash used in investing activities (739,236)us-gaap_NetCashProvidedByUsedInInvestingActivities (735,513)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash flows from financing activities:    
Issuance of common stock 537,875us-gaap_ProceedsFromMinorityShareholders  
Issuance of senior notes 750,000us-gaap_ProceedsFromIssuanceOfUnsecuredDebt  
Borrowings (repayments) on bank credit facility, net (940,000)us-gaap_ProceedsFromRepaymentsOfLinesOfCredit 457,000us-gaap_ProceedsFromRepaymentsOfLinesOfCredit
Payments of deferred financing costs 15,022us-gaap_PaymentsOfDebtIssuanceCosts 701us-gaap_PaymentsOfDebtIssuanceCosts
Distributions (4,338)us-gaap_PaymentsOfCapitalDistribution  
Other (1,161)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities  
Net cash provided by financing activities 327,354us-gaap_NetCashProvidedByUsedInFinancingActivities 456,299us-gaap_NetCashProvidedByUsedInFinancingActivities
Net increase (decrease) in cash and cash equivalents (60,488)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease (4,907)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents, beginning of period 245,979us-gaap_CashAndCashEquivalentsAtCarryingValue 17,487us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents, end of period 185,491us-gaap_CashAndCashEquivalentsAtCarryingValue 12,580us-gaap_CashAndCashEquivalentsAtCarryingValue
Antero Resources Corp    
Cash flows from financing activities:    
Cash and cash equivalents, end of period 23,152us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Non-Guarantor Subsidiaries    
Cash flows from financing activities:    
Cash and cash equivalents, end of period 162,339us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Reportable legal entity | Antero Resources Corp    
Condensed consolidated statement of cash flows    
Net cash provided by operating activities 311,659us-gaap_NetCashProvidedByUsedInOperatingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Cash flows used in investing activities:    
Additions to unproved properties (51,541)us-gaap_PaymentsToAcquireOilAndGasProperty
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Drilling and completion costs (569,068)us-gaap_PaymentsToExploreAndDevelopOilAndGasProperties
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Additions to fresh water distribution systems (22,126)us-gaap_PaymentsToAcquireWaterSystems
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Additions to gathering systems and facilities (40,251)us-gaap_PaymentsToAcquireOilAndGasEquipment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Additions to other property and equipment (2,103)us-gaap_PaymentsToAcquireOtherPropertyPlantAndEquipment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Change in other assets (895)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Distributions from guarantor subsidiary 20,000ar_DistributionsFromGuarantorSubsidiary
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Distributions from non-guarantor subsidiary 9,984ar_NetDistributionsFromNonGaurantorSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Proceeds from asset sales 40,000us-gaap_ProceedsFromSaleOfProductiveAssets
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Net cash used in investing activities (616,000)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Cash flows from financing activities:    
Issuance of common stock 537,875us-gaap_ProceedsFromMinorityShareholders
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Issuance of senior notes 750,000us-gaap_ProceedsFromIssuanceOfUnsecuredDebt
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Borrowings (repayments) on bank credit facility, net (960,000)us-gaap_ProceedsFromRepaymentsOfLinesOfCredit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Payments of deferred financing costs 15,008us-gaap_PaymentsOfDebtIssuanceCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Other (1,161)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Net cash provided by financing activities 311,706us-gaap_NetCashProvidedByUsedInFinancingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Net increase (decrease) in cash and cash equivalents 7,365us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Cash and cash equivalents, beginning of period 15,787us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Cash and cash equivalents, end of period 23,152us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Reportable legal entity | Guarantor Subsidiaries    
Cash flows from financing activities:    
Borrowings (repayments) on bank credit facility, net 20,000us-gaap_ProceedsFromRepaymentsOfLinesOfCredit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Distributions (20,000)us-gaap_PaymentsOfCapitalDistribution
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Reportable legal entity | Non-Guarantor Subsidiaries    
Condensed consolidated statement of cash flows    
Net cash provided by operating activities 39,735us-gaap_NetCashProvidedByUsedInOperatingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Cash flows used in investing activities:    
Additions to gathering systems and facilities (85,737)us-gaap_PaymentsToAcquireOilAndGasEquipment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Change in other assets (7,515)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Net cash used in investing activities (93,252)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Cash flows from financing activities:    
Payments of deferred financing costs 14us-gaap_PaymentsOfDebtIssuanceCosts
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Distributions (14,322)us-gaap_PaymentsOfCapitalDistribution
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Net cash provided by financing activities (14,336)us-gaap_NetCashProvidedByUsedInFinancingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Net increase (decrease) in cash and cash equivalents (67,853)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Cash and cash equivalents, beginning of period 230,192us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Cash and cash equivalents, end of period 162,339us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ReportableLegalEntitiesMember
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Eliminations    
Cash flows used in investing activities:    
Distributions from guarantor subsidiary (20,000)ar_DistributionsFromGuarantorSubsidiary
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
 
Distributions from non-guarantor subsidiary (9,984)ar_NetDistributionsFromNonGaurantorSubsidiaries
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
 
Net cash used in investing activities (29,984)us-gaap_NetCashProvidedByUsedInInvestingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
 
Cash flows from financing activities:    
Distributions 29,984us-gaap_PaymentsOfCapitalDistribution
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember
 
Net cash provided by financing activities $ 29,984us-gaap_NetCashProvidedByUsedInFinancingActivities
/ us-gaap_ConsolidationItemsAxis
= us-gaap_ConsolidationEliminationsMember