Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Sales and revenues:
Sales and revenues	$ 484,204	$ 1,297,950	$ 1,800,511	$ 2,330,775
Sales and revenues	707	1,714		6,296
Sales and revenues	484,911	1,299,664	1,802,016	2,337,071
Operating expenses:
Impairment of oil and gas properties	37,350	130,999	126,570	212,243
Impairment of midstream assets				6,982
Depletion, depreciation, and amortization	214,035	242,302	413,712	482,503
General and administrative	38,403	42,382	69,624	110,584
Other operating expenses	145,458	176,294	265,744	384,518
Total operating expenses	1,091,833	1,199,668	2,146,505	2,270,782
Operating income (loss)	(606,922)	99,996	(344,489)	66,289
Equity in earnings (loss) of unconsolidated affiliates	20,228	13,585	(107,827)	27,666
Investment in unconsolidated affiliate	279,805	1,967,203	279,805	1,967,203	$ 1,055,177
Segment assets	13,743,990	17,330,880	13,743,990	17,330,880	$ 15,197,569
Capital expenditures for segment assets	263,522	342,253	575,133	814,186
Gathering, compression, water handling and treatment
Operating expenses:
Cost of goods and services sold	631,845	566,834	1,220,469	991,363
Lease operating
Operating expenses:
Cost of goods and services sold	24,742	40,857	50,386	82,589
Operating segments | Exploration and production
Sales and revenues:
Sales and revenues	419,919	1,234,824	1,690,153	2,176,459
Sales and revenues	707	1,760		3,518
Sales and revenues	420,626	1,236,584	1,691,658
Operating expenses:
Impairment of oil and gas properties	37,350	130,999	126,570	212,243
Depletion, depreciation, and amortization	214,035	242,302	413,712	460,796
General and administrative	38,403	42,382	69,624	92,290
Other operating expenses	32,405	38,755	59,418	82,892
Total operating expenses	978,780	1,062,129	1,940,179	2,033,896
Operating income (loss)	(558,154)	174,455	(248,521)	146,081
Equity in earnings (loss) of unconsolidated affiliates	20,228	13,585	(107,827)	15,402
Investment in unconsolidated affiliate	279,805	1,967,203	279,805	1,967,203
Segment assets	13,711,749	17,305,519	13,711,749	17,305,519
Capital expenditures for segment assets	263,522	342,253	575,133	761,034
Operating segments | Exploration and production | Gathering, compression, water handling and treatment
Operating expenses:
Cost of goods and services sold	631,845	566,834	1,220,469	1,101,849
Operating segments | Exploration and production | Lease operating
Operating expenses:
Cost of goods and services sold	24,742	40,857	50,386	83,826
Operating segments | Marketing
Sales and revenues:
Sales and revenues	64,285	63,080	110,358	154,266
Sales and revenues	64,285	63,080	110,358
Operating expenses:
Other operating expenses	113,053	137,539	206,326	300,623
Total operating expenses	113,053	137,539	206,326	300,623
Operating income (loss)	(48,768)	(74,459)	(95,968)	(146,357)
Segment assets	32,241	25,361	32,241	25,361
Operating segments | Antero Midstream Corporation
Sales and revenues:
Sales and revenues		46		50
Sales and revenues	219,736	255,572		309,676
Sales and revenues	219,736	255,618	463,444	309,726
Operating expenses:
Impairment of midstream assets		594	664,544	7,576
Depletion, depreciation, and amortization	27,745	36,447	55,088	44,097
General and administrative	12,422	34,622	25,959	54,431
Other operating expenses	2,776	3,504	11,496	4,795
Total operating expenses	85,010	138,027	847,882	188,509
Operating income (loss)	134,726	117,591	(384,438)	121,217
Equity in earnings (loss) of unconsolidated affiliates	20,947	13,623	40,024	16,503
Investment in unconsolidated affiliate	729,823	1,186,161	729,823	1,186,161
Segment assets	5,715,055	6,769,009	5,715,055	6,769,009
Capital expenditures for segment assets	55,431	125,185	123,414	141,190
Operating segments | Antero Midstream Corporation | Gathering, compression, water handling and treatment
Operating expenses:
Cost of goods and services sold	42,067	12,311	90,795	15,233
Operating segments | Antero Midstream Corporation | Lease operating
Operating expenses:
Cost of goods and services sold		50,549		62,377
Elimination of intersegment transaction
Sales and revenues:
Sales and revenues	(219,736)	(255,618)	1,505	(306,898)
Sales and revenues	(219,736)	(255,618)	(463,444)	(306,898)
Operating expenses:
Impairment of midstream assets		(594)	(664,544)	(594)
Depletion, depreciation, and amortization	(27,745)	(36,447)	(55,088)	(22,390)
General and administrative	(12,422)	(34,622)	(25,959)	(36,137)
Other operating expenses	(2,776)	(3,504)	(11,496)	(3,792)
Total operating expenses	(85,010)	(138,027)	(847,882)	(252,246)
Operating income (loss)	(134,726)	(117,591)	384,438	(54,652)
Equity in earnings (loss) of unconsolidated affiliates	(20,947)	(13,623)	(40,024)	(4,239)
Investment in unconsolidated affiliate	(729,823)	(1,186,161)	(729,823)	(1,186,161)
Segment assets	(5,715,055)	(6,769,009)	(5,715,055)	(6,769,009)
Capital expenditures for segment assets	(55,431)	(125,185)	(123,414)	(88,038)
Elimination of intersegment transaction | Gathering, compression, water handling and treatment
Operating expenses:
Cost of goods and services sold	$ (42,067)	(12,311)	(90,795)	(125,719)
Elimination of intersegment transaction | Lease operating
Operating expenses:
Cost of goods and services sold		$ (50,549)		(63,614)
Elimination of intersegment transaction | Exploration and production
Sales and revenues:
Sales and revenues			1,505
Sales and revenues				2,179,977
Elimination of intersegment transaction | Marketing
Sales and revenues:
Sales and revenues				$ 154,266
Elimination of intersegment transaction | Antero Midstream Corporation
Sales and revenues:
Sales and revenues			$ 463,444