Summarized Financial Information for Antero Midstream (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Summarized Balance Sheet Information
Current assets	$ 133,965		$ 133,965		$ 120,385
Non-current assets	3,280,863		3,280,863		2,921,824
Current liabilities	107,887		107,887		121,316
Non-current liabilities	1,742,379		1,742,379		1,404,424
Partners' capital	1,564,562		1,564,562		$ 1,516,469
Antero Midstream
Summarized Income Statement Information
Revenues	266,205	$ 193,629	746,771	$ 562,165
Operating expenses	140,159	110,458	394,355	304,730
Operating income	126,046	83,171	352,416	257,435
Net income and comprehensive income	119,764	80,893	337,335	243,160
Net income attributable to incentive distribution rights	(37,816)	(19,067)	(99,414)	(45,948)
Limited partners' interest in net income	$ 81,948	$ 61,826	$ 237,921	$ 197,212