Equity-Based Compensation - Phantom Unit Awards (Details) - Antero Midstream Partners Phantom Unit Awards $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($) $ / shares shares
Number of units
Total granted and unvested at the beginning of the period (in shares) | shares	1,331,961
Granted (in shares) | shares	377,660
Vested (in shares) | shares	(73,080)
Forfeited (in shares) | shares	(78,584)
Total awarded and unvested at the end of the period (in shares) | shares	1,557,957
Weighted average grant date fair value
Total granted and unvested at the beginning of the period (in dollars per share) | $ / shares	$ 27.31
Granted (in dollars per share) | $ / shares	32.52
Vested (in dollars per share) | $ / shares	21.34
Forfeited (in dollars per share) | $ / shares	28.76
Total awarded and unvested at the end of the period (in dollars per share) | $ / shares	$ 28.78
Aggregate intrinsic value
Outstanding at the beginning of the period | $	$ 41,131
Outstanding at the end of the period | $	49,122
Additional equity compensation to be recognized over the remaining period | $	$ 30,400
Weighted average period for recognizing unrecognized stock-based compensation expense	2 years 2 months 12 days