Equity-Based Compensation - Phantom Unit Awards (Details) - Antero Midstream Partners Phantom Unit Awards $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) $ / shares shares
Number of units
Total granted and unvested at the beginning of the period (in shares) | shares	1,042,963
Granted (in shares) | shares	9,449
Vested (in shares) | shares	(1,491)
Forfeited (in shares) | shares	(24,990)
Total awarded and unvested at the end of the period (in shares) | shares	1,025,931
Weighted average grant date fair value
Total granted and unvested at the beginning of the period (in dollars per share) | $ / shares	$ 28.69
Granted (in dollars per share) | $ / shares	31.75
Vested (in dollars per share) | $ / shares	33.52
Forfeited (in dollars per share) | $ / shares	28.96
Total awarded and unvested at the end of the period (in dollars per share) | $ / shares	$ 28.71
Aggregate intrinsic value
Outstanding at the beginning of the period | $	$ 30,288
Outstanding at the end of the period | $	26,561
Additional equity compensation to be recognized over the remaining period | $	$ 20,300
Weighted average period for recognizing unrecognized stock-based compensation expense	1 year 10 months 24 days