Condensed Consolidated Statements of Equity - USD ($) $ in Thousands	Common Stock	Additional paid-in capital	Accumulated earnings	Noncontrolling Interests	Total
Balance at Dec. 31, 2016	$ 3,149	$ 5,299,481	$ 959,995	$ 1,465,953	$ 7,728,578
Balance (in shares) at Dec. 31, 2016	314,877
Increase (Decrease) in Stockholders' Equity
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings	$ 1	(1,658)			(1,657)
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings (in shares)	129
Issuance of common units in Antero Midstream LP upon vesting of equity-based compensation awards, net of units withheld for income tax withholdings				223,119	223,119
Equity-based compensation		23,354		2,149	25,503
Net income (loss) and comprehensive income (loss) including noncontrolling interest			268,396	37,162	305,558
Effects of changes in ownership interests in consolidated subsidiaries		1,085,981		(1,085,981)
Distributions to non-controlling interests				(27,149)	(27,149)
Balance at Mar. 31, 2017	$ 3,150	6,407,158	1,228,391	615,253	8,253,952
Balance (in shares) at Mar. 31, 2017	315,006
Balance at Dec. 31, 2016	$ 3,149	5,299,481	959,995	1,465,953	7,728,578
Balance (in shares) at Dec. 31, 2016	314,877
Increase (Decrease) in Stockholders' Equity
Net income (loss) and comprehensive income (loss) including noncontrolling interest					255,523
Balance at Sep. 30, 2017	$ 3,155	6,564,320	1,088,196	731,591	8,387,262
Balance (in shares) at Sep. 30, 2017	315,470
Balance at Mar. 31, 2017	$ 3,150	6,407,158	1,228,391	615,253	8,253,952
Balance (in shares) at Mar. 31, 2017	315,006
Increase (Decrease) in Stockholders' Equity
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings	$ 4	(5,848)			(5,844)
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings (in shares)	442
Issuance of common units by subsidiary - Antero Midstream Partners LP				23,466	23,466
Issuance of common units in Antero Midstream LP upon vesting of equity-based compensation awards, net of units withheld for income tax withholdings		(1,559)		627	(932)
Equity-based compensation		24,543		2,432	26,975
Net income (loss) and comprehensive income (loss) including noncontrolling interest			(5,132)	45,097	39,965
Effects of changes in ownership interests in consolidated subsidiaries		10,753		(10,753)
Distributions to non-controlling interests				(34,720)	(34,720)
Balance at Jun. 30, 2017	$ 3,154	6,435,047	1,223,259	641,402	8,302,862
Balance (in shares) at Jun. 30, 2017	315,448
Increase (Decrease) in Stockholders' Equity
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings	$ 1	(68)			(67)
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings (in shares)	22
Sale of common units of Antero Midstream Partners LP held by Antero Resources Corporation		205,780		(19,940)	185,840
Issuance of common units by subsidiary - Antero Midstream Partners LP				2,364	2,364
Equity-based compensation		23,889		2,558	26,447
Net income (loss) and comprehensive income (loss) including noncontrolling interest			(135,063)	45,063	(90,000)
Effects of changes in ownership interests in consolidated subsidiaries		(100,328)		100,328
Distributions to non-controlling interests				(40,184)	(40,184)
Balance at Sep. 30, 2017	$ 3,155	6,564,320	1,088,196	731,591	8,387,262
Balance (in shares) at Sep. 30, 2017	315,470
Balance at Dec. 31, 2017	$ 3,164	6,570,952	1,575,065	726,955	8,876,136
Balance (in shares) at Dec. 31, 2017	316,379
Increase (Decrease) in Stockholders' Equity
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings	$ 1	(1,067)			(1,066)
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings (in shares)	145
Issuance of common units in Antero Midstream LP upon vesting of equity-based compensation awards, net of units withheld for income tax withholdings		(50)		32	(18)
Equity-based compensation		18,802		2,354	21,156
Net income (loss) and comprehensive income (loss) including noncontrolling interest			14,833	65,977	80,810
Effects of changes in ownership interests in consolidated subsidiaries		(555)		555
Distributions to non-controlling interests				(55,915)	(55,915)
Other				(5)	(5)
Balance at Mar. 31, 2018	$ 3,165	6,588,082	1,589,898	739,953	8,921,098
Balance (in shares) at Mar. 31, 2018	316,524
Balance at Dec. 31, 2017	$ 3,164	6,570,952	1,575,065	726,955	8,876,136
Balance (in shares) at Dec. 31, 2017	316,379
Increase (Decrease) in Stockholders' Equity
Net income (loss) and comprehensive income (loss) including noncontrolling interest					(64,437)
Balance at Sep. 30, 2018	$ 3,171	6,611,348	1,299,094	757,539	8,671,152
Balance (in shares) at Sep. 30, 2018	317,086
Balance at Mar. 31, 2018	$ 3,165	6,588,082	1,589,898	739,953	8,921,098
Balance (in shares) at Mar. 31, 2018	316,524
Increase (Decrease) in Stockholders' Equity
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings	$ 6	(5,589)			(5,583)
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings (in shares)	528
Issuance of common units in Antero Midstream LP upon vesting of equity-based compensation awards, net of units withheld for income tax withholdings		(4,007)		2,707	(1,300)
Equity-based compensation		16,930		2,141	19,071
Net income (loss) and comprehensive income (loss) including noncontrolling interest			(136,385)	69,110	(67,275)
Effects of changes in ownership interests in consolidated subsidiaries		2,121		(2,121)
Distributions to non-controlling interests				(63,108)	(63,108)
Other				8	8
Balance at Jun. 30, 2018	$ 3,171	6,597,537	1,453,513	748,690	8,802,911
Balance (in shares) at Jun. 30, 2018	317,052
Increase (Decrease) in Stockholders' Equity
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings		(157)			(157)
Issuance of common stock upon vesting of equity-based compensation awards, net of shares withheld for income tax withholdings (in shares)	34
Issuance of common units in Antero Midstream LP upon vesting of equity-based compensation awards, net of units withheld for income tax withholdings		(306)		226	(80)
Equity-based compensation		14,646		1,556	16,202
Net income (loss) and comprehensive income (loss) including noncontrolling interest			(154,419)	76,447	(77,972)
Effects of changes in ownership interests in consolidated subsidiaries		(372)		372
Distributions to non-controlling interests				(69,752)	(69,752)
Balance at Sep. 30, 2018	$ 3,171	$ 6,611,348	$ 1,299,094	$ 757,539	$ 8,671,152
Balance (in shares) at Sep. 30, 2018	317,086