Equity Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Additional disclosures
Equity-based compensation	$ 4,528	$ 7,199	$ 16,606	$ 20,436
Midstream LTIP
Additional disclosures
Number of stock-based compensation awards authorized	10,000,000		10,000,000
Unamortized expense	$ 16,300		$ 16,300
Number of shares available for future grant under the Plan	7,752,232		7,752,232
Weighted average period for recognizing unrecognized stock-based compensation expense			2 years 6 months
Restricted unit and phantom unit awards
Number of units
Total awarded and unvested at the beginning of the period (in shares)			1,042,963
Granted (in shares)			247,692
Vested (in shares)			(144,620)
Forfeited (in shares)			(93,419)
Total awarded and unvested at the end of the period (in shares)	1,052,616		1,052,616
Weighted average grant date fair value
Total awarded and unvested at the beginning of the period (in dollars per unit)			$ 28.69
Granted (in dollars per unit)			25.84
Vested (in dollars per unit)			30.17
Forfeited (in dollars per unit)			28.64
Total awarded and unvested at the end of the period (in dollars per unit)	$ 28.15		$ 28.15
Aggregate intrinsic value
Total awarded and unvested at the beginning of the period			$ 30,288
Total awarded and unvested at the end of the period	$ 30,168		30,168
Various equity based compensation plans | Antero Resources
Additional disclosures
Unamortized expense	$ 79,000		$ 79,000