Investments in Unconsolidated Affiliates (Details) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended
	Mar. 31, 2019 USD ($) item mi	Mar. 12, 2019 USD ($)	Mar. 31, 2019 USD ($) item mi	Mar. 31, 2018 USD ($)
Investments in unconsolidated affiliates
Balance at beginning of period		$ 43,492	$ 43,492
Investments in unconsolidated affiliates acquired from Antero Midstream Partners	$ 1,090,109
Additional investments	65,729
Equity in net income of unconsolidated affiliates	2,880		2,880	$ 28,453
Distributions from unconsolidated affiliates	(4,775)	(43,492)	(4,775)
Balance at end of period	$ 1,153,943		1,153,943
Antero Midstream Partners LP
Investments in unconsolidated affiliates
Balance at beginning of period		43,492	$ 43,492
Distributions from unconsolidated affiliates		$ (43,492)
Stonewall
Equity Method Investments
Ownership percentage	15.00%		15.00%
Number of miles of pipeline | mi	67		67
Investments in unconsolidated affiliates
Investments in unconsolidated affiliates acquired from Antero Midstream Partners	$ 133,752
Equity in net income of unconsolidated affiliates	307
Balance at end of period	$ 134,059		$ 134,059
MarkWest Joint venture
Equity Method Investments
Ownership percentage	50.00%		50.00%
Percentage of interest held by joint venture in third party fractionator in Ohio			33.33%
Number of fractionators | item	2		2
Investments in unconsolidated affiliates
Investments in unconsolidated affiliates acquired from Antero Midstream Partners	$ 956,357
Additional investments	65,729
Equity in net income of unconsolidated affiliates	2,573
Distributions from unconsolidated affiliates	(4,775)
Balance at end of period	$ 1,019,884		$ 1,019,884