Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows provided by (used in) operating activities:
Net loss including noncontrolling interests	$ (1,260,411)	$ (293,136)	$ (45,701)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depletion, depreciation, amortization, and accretion	865,291	918,629	975,284
Impairments	834,402	1,782,816	559,095
Commodity derivative fair value losses (gains)	(79,918)	(463,972)	87,594
Gains on settled commodity derivatives	794,684	325,090	243,112
Premium paid on derivative contract			(13,318)
Proceeds from derivative monetizations	9,007		370,365
Gains on settled marketing derivatives			72,687
Marketing derivative fair value gains	0	0	(94,081)
Loss on sale of assets	348	951
Equity-based compensation expense	23,317	23,559	70,414
Deferred income tax benefit	(397,482)	(79,158)	(128,857)
Gain on early extinguishment of debt	(175,962)	(36,419)
Loss on the sale of equity method investment shares		108,745
Equity in (earnings) loss of unconsolidated affiliates	62,660	143,216	(40,280)
Water earnout		(125,000)
Gain on deconsolidation of Antero Midstream Partners LP		(1,406,042)
Distributions/dividends of earnings from unconsolidated affiliates	171,022	157,956	46,415
Amortization of deferred revenue	(14,507)
Amortization of debt issuance costs, debt discount, debt premium and other	12,236	10,681	4,681
Changes in current assets and liabilities:
Accounts receivable	(9,492)	31,631	(15,156)
Accrued revenue	(107,428)	156,941	(174,706)
Other current assets	(5,507)	(1,025)	(5,817)
Accounts payable including related parties	(19,282)	(27,996)	9,307
Accrued liabilities	37,954	(25,762)	63,562
Revenue distributions payable	(5,203)	(102,839)	101,210
Other current liabilities	(89)	4,592	(3,823)
Net cash provided by operating activities	735,640	1,103,458	2,081,987
Cash flows provided by (used in) investing activities:
Additions to unproved properties	(45,129)	(88,682)	(172,387)
Drilling and completion costs	(826,265)	(1,254,118)	(1,488,573)
Additions to water handling and treatment systems		(24,416)	(97,699)
Additions to gathering systems and facilities		(48,239)	(444,413)
Additions to other property and equipment	(2,963)	(6,700)	(7,514)
Settlement of water earnout	125,000
Investments in unconsolidated affiliates		(25,020)	(136,475)
Proceeds from sale of common stock of Antero Midstream Corporation		100,000
Proceeds from the Antero Midstream Partners LP Transactions		296,611
Proceeds from asset sales	701	1,983
Proceeds from VPP sale, net	215,789
Change in other assets	2,806	7,091	(3,663)
Net cash used in investing activities	(530,061)	(1,041,490)	(2,350,724)
Cash flows provided by (used in) financing activities:
Repurchases of common stock	(43,443)	(38,772)	(129,084)
Issuance of senior notes by Antero Midstream Partners LP		650,000
Issuance of convertible notes	287,500
Repayment of senior notes	(1,219,019)	(191,092)
Borrowings (repayments) on bank credit facilities, net	465,000	232,000	660,379
Payment of debt issuance costs	(8,984)	(4,547)	(2,169)
Sale of noncontrolling interest	351,000
Distributions to noncontrolling interests	(35,920)	(85,076)	(267,271)
Employee tax withholding for settlement of equity compensation awards	(422)	(2,389)	(17,020)
Other	(1,291)	(2,560)	(4,539)
Net cash provided by (used in) financing activities	(205,579)	557,564	240,296
Effect of deconsolidation of Antero Midstream Partners LP		(619,532)
Net decrease in cash and cash equivalents			(28,441)
Cash and cash equivalents, beginning of period			28,441
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	192,302	224,331	275,769
Decrease in accounts payable and accrued liabilities for additions to property and equipment	$ (94,619)	$ (15,897)	$ (47,717)