Annual report pursuant to Section 13 and 15(d)

Organization (Details)

v2.4.1.9
Organization (Details) (USD $)
0 Months Ended 12 Months Ended
Nov. 10, 2014
Dec. 31, 2014
IPO [Member]    
Organization    
Units issued 46,000,000us-gaap_PartnersCapitalAccountUnitsSoldInPublicOffering
/ us-gaap_TransactionTypeAxis
= us-gaap_IPOMember
 
Price per common unit of limited partnership $ 25.00am_SaleOfLimitedPartnershipInterestsPricePerUnit
/ us-gaap_TransactionTypeAxis
= us-gaap_IPOMember
 
Net proceeds received from shares of common stock sold $ 1,100,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_TransactionTypeAxis
= us-gaap_IPOMember
 
Common units redeemed 6,000,000us-gaap_PartnersCapitalAccountUnitsRedeemed
/ us-gaap_TransactionTypeAxis
= us-gaap_IPOMember
 
Net proceeds retained 250,000,000am_ProceedsFromIssuanceOfSharesRetained
/ us-gaap_TransactionTypeAxis
= us-gaap_IPOMember
 
Common Unitholders Public [Member]    
Organization    
Common unitholders units outstanding   46,000,000us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
/ us-gaap_StatementClassOfStockAxis
= am_CommonUnitholdersPublicMember
Common Unitholders Public [Member] | IPO [Member]    
Organization    
Ownership percentage (as a percent)   30.30%am_OwnershipPercentage
/ us-gaap_StatementClassOfStockAxis
= am_CommonUnitholdersPublicMember
/ us-gaap_TransactionTypeAxis
= us-gaap_IPOMember
Common unitholders units outstanding   46,000,000us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
/ us-gaap_StatementClassOfStockAxis
= am_CommonUnitholdersPublicMember
/ us-gaap_TransactionTypeAxis
= us-gaap_IPOMember
Common Unitholders Antero [Member]    
Organization    
Common unitholders units outstanding   29,940,957us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
/ us-gaap_StatementClassOfStockAxis
= am_CommonUnitholdersAnteroMember
Subordinated Unitholder Antero [Member]    
Organization    
Common unitholders units outstanding   75,940,957us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
/ us-gaap_StatementClassOfStockAxis
= am_SubordinatedUnitholderAnteroMember
Antero    
Organization    
Term of agreement with Antero   20 years
Antero | IPO [Member]    
Organization    
Debt repaid using the proceeds of IPO $ 843,000,000am_CashOutflowToParentToRepayIndebtednessAndToReimburse
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= am_AnteroResourcesCorporationMember
/ us-gaap_TransactionTypeAxis
= us-gaap_IPOMember
 
Antero | Antero Midstream Partners LP    
Organization    
Ownership percentage (as a percent)   69.70%am_OwnershipPercentage
/ dei_LegalEntityAxis
= am_AnteroMidstreamPartnersLpMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= am_AnteroResourcesCorporationMember