Net Income Per Limited Partner Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net income per limited partner unit
Net income allocable to common units - basic and diluted	$ 26,843	$ 9,725	$ 50,206	$ 17,549
Net income allocable to subordinated units - basic and diluted	20,338	9,725	38,042	17,549
Limited partner interest in net income - basic and diluted	47,181	19,450	88,248	35,098
Net income	49,912	35,124	92,829	67,451
Pre-Water Acquisition net income attributed to parent		(15,674)		(32,353)
General partner's interest in net income attributable to incentive distribution rights	(2,731)		(4,581)
Limited partners' interest in net income	$ 47,181	$ 19,450	$ 88,248	$ 35,098
Weighted average units outstanding:
Common units - basic	100,231,000	75,941,000	100,226,000	75,941,000
Subordinated units - basic	75,941,000	75,941,000	75,941,000	75,941,000
Common units diluted	100,285,000	75,958,000	100,262,000	75,956,000
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	$ 0.27	$ 0.13	$ 0.50	$ 0.23
Subordinated units - basic	0.27	0.13	0.50	0.23
Common units - diluted	0.27	0.13	0.50	0.23
Subordinated units - diluted	$ 0.27	$ 0.13	$ 0.50	$ 0.23
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	1,597,455		1,597,455
Restricted and phantom unit award
Weighted average units outstanding:
Weighted average units outstanding - diluted	54,511		35,933
Common units
Weighted average units outstanding:
Weighted average units outstanding - diluted	100,285,180		100,262,031