Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v2.4.1.9
Consolidated Balance Sheets (Parenthetical)
Dec. 31, 2014
Common Unitholders Public [Member]  
Common unitholders units issued 46,000,000us-gaap_LimitedPartnersCapitalAccountUnitsIssued
/ us-gaap_StatementClassOfStockAxis
= am_CommonUnitholdersPublicMember
Common unitholders units outstanding 46,000,000us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
/ us-gaap_StatementClassOfStockAxis
= am_CommonUnitholdersPublicMember
Common Unitholders Antero [Member]  
Common unitholders units issued 29,940,957us-gaap_LimitedPartnersCapitalAccountUnitsIssued
/ us-gaap_StatementClassOfStockAxis
= am_CommonUnitholdersAnteroMember
Common unitholders units outstanding 29,940,957us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
/ us-gaap_StatementClassOfStockAxis
= am_CommonUnitholdersAnteroMember
Subordinated Unitholder Antero [Member]  
Common unitholders units issued 75,940,957us-gaap_LimitedPartnersCapitalAccountUnitsIssued
/ us-gaap_StatementClassOfStockAxis
= am_SubordinatedUnitholderAnteroMember
Common unitholders units outstanding 75,940,957us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
/ us-gaap_StatementClassOfStockAxis
= am_SubordinatedUnitholderAnteroMember