Equity Based Compensation (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($) $ / shares shares
Midstream LTIP
Additional disclosures
Number of stock-based compensation awards authorized	10,000,000
Unamortized expense | $	$ 37,500
Number of shares available for future grant under the Plan	7,737,934
Weighted average period for recognizing unrecognized stock-based compensation expense	2 years 3 months 18 days
Restricted unit and phantom unit awards
Number of units
Total awarded and unvested at the beginning of the period (in shares)	1,667,832
Granted (in shares)	290,254
Vested (in shares)	(6,354)
Forfeited (in shares)	(97,723)
Total awarded and unvested at the end of the period (in shares)	1,854,009
Weighted average grant date fair value
Total awarded and unvested at the beginning of the period (in dollars per unit) | $ / shares	$ 28.97
Granted (in dollars per unit) | $ / shares	21.24
Vested (in dollars per unit) | $ / shares	24.98
Forfeited (in dollars per unit) | $ / shares	28.63
Total awarded and unvested at the end of the period (in dollars per unit) | $ / shares	$ 27.79
Aggregate intrinsic value
Total awarded and unvested at the beginning of the period | $	$ 38,060
Total awarded and unvested at the end of the period | $	49,502
Various equity based compensation plans | Antero
Additional disclosures
Unamortized expense | $	$ 210,200