Investments in Unconsolidated Affiliates (Details) $ in Thousands	2 Months Ended	10 Months Ended	12 Months Ended
	Mar. 12, 2019 USD ($)	Dec. 31, 2019 USD ($) item mi	Dec. 31, 2019 USD ($) item mi	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Investments in unconsolidated affiliates
Balance at beginning of period	$ 43,492		$ 43,492	$ 23,772
Distributions from unconsolidated affiliates	(43,492)		(43,492)	(123,186)	$ (53,491)
Investments in unconsolidated affiliates acquired from Antero Midstream Partners		$ 568,285
Additional investments		154,359
Equity in net income of unconsolidated affiliates		51,315	51,315	142,906	69,720
Distributions from unconsolidated affiliates		(64,320)	(64,320)
Balance at end of period		709,639	709,639	43,492	23,772
Summarized Financial Information of Unconsolidated Affiliates
Current assets		61,641	61,641	90,481
Noncurrent assets		1,660,401	1,660,401	1,327,947
Total assets		1,722,042	1,722,042	1,418,428
Current liabilities		33,912	33,912	76,605
Noncurrent liabilities		5,521	5,521	6,986
Noncontrolling interest		175,021	175,021	172,865
Partners' capital		1,507,588	1,507,588	1,161,972
Total liabilities and partners' capital		$ 1,722,042	1,722,042	1,418,428
Statements of Combined Operations
Revenues			254,868	189,222	119,371
Operating expenses			105,218	75,250	40,059
Income from operations			149,650	113,972	79,312
Net income attributable to the equity method investments			$ 23,615	131,626	88,717
MarkWest
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
Stonewall
Equity Method Investments
Ownership percentage		15.00%	15.00%
Number of miles of pipeline | mi		67	67
Antero Midstream Partners LP
Investments in unconsolidated affiliates
Balance at beginning of period	43,492		$ 43,492	23,772
Distributions from unconsolidated affiliates	$ (43,492)			(123,186)
Equity in net income of unconsolidated affiliates				142,906
Balance at end of period				$ 43,492	$ 23,772
Stonewall
Equity Method Investments
Ownership percentage		15.00%	15.00%
Investments in unconsolidated affiliates
Investments in unconsolidated affiliates acquired from Antero Midstream Partners		$ 142,071
Equity in net income of unconsolidated affiliates		4,117
Distributions from unconsolidated affiliates		(5,730)
Balance at end of period		140,458	$ 140,458
MarkWest Joint venture
Investments in unconsolidated affiliates
Investments in unconsolidated affiliates acquired from Antero Midstream Partners		426,214
Additional investments		154,359
Equity in net income of unconsolidated affiliates		47,198
Distributions from unconsolidated affiliates		(58,590)
Balance at end of period		$ 569,181	$ 569,181