Annual report pursuant to Section 13 and 15(d)

Net Income Per Limited Partner Unit (Details1)

v2.4.1.9
Net Income Per Limited Partner Unit (Details1) (USD $)
0 Months Ended 2 Months Ended 3 Months Ended 12 Months Ended
Feb. 02, 2015
Dec. 31, 2014
Dec. 31, 2014
Dec. 31, 2014
Earnings Per Unit [Abstract]        
Distribution declared   $ 14,322,000am_DistributionMadeToPartnerCashDistributionsDeclared    
Distributions in excess of earnings   (6,900,000)am_DisributionsInExcessOfEarnings    
Net income loss allocated to limited partners post Ipo   7,422,000am_NetIncomeLossAllocatedToLimitedPartnersPostIpo   7,422,000am_NetIncomeLossAllocatedToLimitedPartnersPostIpo
Weighted average units outstanding:        
Basic and diluted   151,882us-gaap_WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingBasicAndDiluted    
Net income attributable to Antero Midstream Partners LP subsequent to IPO per limited unit partner unit        
Cash distribution declared $ 0.0943us-gaap_DistributionMadeToLimitedPartnerDistributionsDeclaredPerUnit   $ 0.0943us-gaap_DistributionMadeToLimitedPartnerDistributionsDeclaredPerUnit  
Quarterly cash distribution 14,000,000us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared      
Minimum        
Net income attributable to Antero Midstream Partners LP subsequent to IPO per limited unit partner unit        
Limited partner minimum quarterly distribution per partnership agreement   0.17am_LimitedPartnerMinimumQuarterlyDistributionPerPartnershipAgreement
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Minimum quarterly cash distribution (per unit)   0.17am_LimitedPartnerMinimumQuarterlyDistributionPerPartnershipAgreement
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Common units | Limited Partner        
Earnings Per Unit [Abstract]        
Distribution declared   7,161,000am_DistributionMadeToPartnerCashDistributionsDeclared
/ us-gaap_PartnerCapitalComponentsAxis
= am_CommonUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
   
Distributions in excess of earnings   (3,450,000)am_DisributionsInExcessOfEarnings
/ us-gaap_PartnerCapitalComponentsAxis
= am_CommonUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
   
Net income loss allocated to limited partners post Ipo   3,711,000am_NetIncomeLossAllocatedToLimitedPartnersPostIpo
/ us-gaap_PartnerCapitalComponentsAxis
= am_CommonUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
   
Weighted average units outstanding:        
Basic and diluted   75,941us-gaap_WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingBasicAndDiluted
/ us-gaap_PartnerCapitalComponentsAxis
= am_CommonUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
   
Net income attributable to Antero Midstream Partners LP subsequent to IPO per limited unit partner unit        
Total earnings per unit   $ 0.05us-gaap_EarningsPerShareBasicAndDiluted
/ us-gaap_PartnerCapitalComponentsAxis
= am_CommonUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
   
Subordinated units | Limited Partner        
Earnings Per Unit [Abstract]        
Distribution declared   7,161,000am_DistributionMadeToPartnerCashDistributionsDeclared
/ us-gaap_PartnerCapitalComponentsAxis
= am_SubordinatedUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
   
Distributions in excess of earnings   (3,450,000)am_DisributionsInExcessOfEarnings
/ us-gaap_PartnerCapitalComponentsAxis
= am_SubordinatedUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
   
Net income loss allocated to limited partners post Ipo   $ 3,711,000am_NetIncomeLossAllocatedToLimitedPartnersPostIpo
/ us-gaap_PartnerCapitalComponentsAxis
= am_SubordinatedUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
   
Weighted average units outstanding:        
Basic and diluted   75,941us-gaap_WeightedAverageNumberOfLimitedPartnershipAndGeneralPartnershipUnitOutstandingBasicAndDiluted
/ us-gaap_PartnerCapitalComponentsAxis
= am_SubordinatedUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
   
Net income attributable to Antero Midstream Partners LP subsequent to IPO per limited unit partner unit        
Total earnings per unit   $ 0.05us-gaap_EarningsPerShareBasicAndDiluted
/ us-gaap_PartnerCapitalComponentsAxis
= am_SubordinatedUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember