Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Sales and revenues:
Sales and revenues	$ 1,316,307	$ 1,032,825
Sales and revenues	1,317,105	1,037,407
Operating expenses:
Impairment of oil and gas properties	89,220	81,244
Impairment of midstream assets		6,982
Impairment of equity investments	610,632
Depletion, depreciation, and amortization	199,677	240,201
General and administrative	31,221	68,202
Other operating expenses	120,286	208,224
Total operating expenses	1,054,672	1,071,114
Operating income (loss)	262,433	(33,707)
Equity in earnings (loss) of unconsolidated affiliates	(128,055)	14,081
Investments in unconsolidated affiliates	291,989	1,989,612	$ 1,055,177
Segment assets	14,525,789	17,288,730	$ 15,197,569
Capital expenditures for segment assets	311,611	471,933
Marketing
Sales and revenues:
Sales and revenues	46,073
Operating expenses:
Other operating expenses	93,273
Total operating expenses	93,273
Operating income (loss)	(47,200)
Segment assets	9,639
Antero Midstream Corporation
Operating expenses:
Impairment of midstream assets	664,544
Depletion, depreciation, and amortization	27,343
General and administrative	10,199
Other operating expenses	4,878
Total operating expenses	762,872
Operating income (loss)	(519,164)
Equity in earnings (loss) of unconsolidated affiliates	19,077
Investments in unconsolidated affiliates	716,778
Segment assets	5,781,359
Capital expenditures for segment assets	67,983
Operating segments
Sales and revenues:
Sales and revenues		1,037,407
Operating segments | Exploration and production
Sales and revenues:
Sales and revenues	1,270,234	941,635
Sales and revenues	1,271,032	943,393
Operating expenses:
Impairment of oil and gas properties	89,220	81,244
Depletion, depreciation, and amortization	199,677	218,494
General and administrative	31,221	49,908
Other operating expenses	27,013	44,137
Total operating expenses	961,399	971,767
Operating income (loss)	309,633	(28,374)
Equity in earnings (loss) of unconsolidated affiliates	(128,055)	1,817
Investments in unconsolidated affiliates	291,989	1,989,612
Segment assets	14,516,150	17,263,369
Capital expenditures for segment assets	311,611	399,278
Operating segments | Marketing
Sales and revenues:
Sales and revenues		91,186
Sales and revenues	46,073	91,186
Operating expenses:
Other operating expenses		163,084
Total operating expenses		163,084
Operating income (loss)		(71,898)
Segment assets		25,361
Operating segments | Antero Midstream Corporation
Sales and revenues:
Sales and revenues		4
Sales and revenues	243,708	54,108
Operating expenses:
Impairment of midstream assets		6,982
Depletion, depreciation, and amortization		7,650
General and administrative		2,184
Other operating expenses		1,291
Total operating expenses		32,857
Operating income (loss)		21,251
Equity in earnings (loss) of unconsolidated affiliates		2,880
Investments in unconsolidated affiliates		1,153,943
Segment assets		6,660,325
Capital expenditures for segment assets		16,005
Elimination of intersegment transaction
Sales and revenues:
Sales and revenues	798	4,582
Sales and revenues	(243,708)	(51,280)
Operating expenses:
Impairment of midstream assets	(664,544)
Depletion, depreciation, and amortization	(27,343)	14,057
General and administrative	(10,199)	16,110
Other operating expenses	(4,878)	(288)
Total operating expenses	(762,872)	(96,594)
Operating income (loss)	519,164	45,314
Equity in earnings (loss) of unconsolidated affiliates	(19,077)	9,384
Investments in unconsolidated affiliates	(716,778)	(1,153,943)
Segment assets	(5,781,359)	(6,660,325)
Capital expenditures for segment assets	(67,983)	56,650
Elimination of intersegment transaction | Exploration and production
Sales and revenues:
Sales and revenues	798	1,758
Elimination of intersegment transaction | Antero Midstream Corporation
Sales and revenues:
Sales and revenues	243,708	54,104
Gathering, compression, water handling and treatment
Operating expenses:
Cost of goods and services sold	588,624	424,529
Gathering, compression, water handling and treatment | Antero Midstream Corporation
Operating expenses:
Cost of goods and services sold	55,908
Gathering, compression, water handling and treatment | Operating segments | Exploration and production
Operating expenses:
Cost of goods and services sold	588,624	535,015
Gathering, compression, water handling and treatment | Operating segments | Antero Midstream Corporation
Operating expenses:
Cost of goods and services sold		2,935
Gathering, compression, water handling and treatment | Elimination of intersegment transaction
Operating expenses:
Cost of goods and services sold	(55,908)	(113,421)
Lease operating
Operating expenses:
Cost of goods and services sold	25,644	41,732
Lease operating | Operating segments | Exploration and production
Operating expenses:
Cost of goods and services sold	$ 25,644	42,969
Lease operating | Operating segments | Antero Midstream Corporation
Operating expenses:
Cost of goods and services sold		11,815
Lease operating | Elimination of intersegment transaction
Operating expenses:
Cost of goods and services sold		$ (13,052)