Net Income Per Limited Partner Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net income per limited partner unit
Net income allocable to common units - basic and diluted	$ 37,409	$ 17,561	$ 87,615	$ 35,110
Net income allocable to subordinated units - basic and diluted	28,308	16,951	66,350	34,499
Limited partner interest in net income - basic and diluted	65,717	34,512	153,965	69,609
Net income	70,524	42,648	163,352	110,097
Pre-Water Acquisition net income attributed to parent		(7,841)		(40,193)
General partner's interest in net income attributable to incentive distribution rights	(4,807)	(295)	(9,387)	(295)
Limited partners' interest in net income	$ 65,717	$ 34,512	$ 153,965	$ 69,609
Weighted average units outstanding:
Common units - basic	100,454,000	78,018,000	100,302,000	76,641,000
Subordinated units - basic	75,941,000	75,941,000	75,941,000	75,941,000
Common units diluted	100,825,000	78,034,000	100,365,000	76,657,000
Subordinated units - diluted	75,941,000	75,941,000	75,941,000	75,941,000
Net income attributable to Antero Midstream Partners LP subsequent to IPO
Common units - basic	$ 0.37	$ 0.23	$ 0.87	$ 0.46
Subordinated units - basic	0.37	0.22	0.87	0.45
Common units - diluted	0.37	0.23	0.87	0.46
Subordinated units - diluted	$ 0.37	$ 0.22	$ 0.87	$ 0.45
Phantom share units
Weighted average units outstanding:
Antidilutive securities excluded from computation of earnings per share	0		0
Restricted unit awards
Weighted average units outstanding:
Antidilutive securities excluded from computation of earnings per share	1,562,669		1,562,669
Restricted and phantom unit award
Weighted average units outstanding:
Weighted average units outstanding - diluted	370,594		62,647
Common units
Weighted average units outstanding:
Weighted average units outstanding - diluted	100,824,582		100,364,955