Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Selected Quarterly Financial Information [Abstract]
Total revenue	$ 1,045,649	$ 1,076,532	$ 989,344	$ 1,028,101	$ 1,021,726	$ 647,880	$ 790,389	$ 1,195,579	$ 4,139,626	$ 3,655,574	$ 1,744,525
Total operating expenses	1,092,279	1,071,728	1,022,107	881,607	834,667	719,932	666,646	694,236	4,067,721	2,915,481	2,720,326
Operating income (loss)	(46,630)	4,804	(32,763)	146,494	187,059	(72,052)	123,743	501,343	71,905	740,093	(975,801)
Net income (loss) including noncontrolling interests	18,736	(77,972)	(67,275)	80,810	529,614	(90,000)	39,965	305,558	(45,701)	785,137	(749,448)
Net Income (Loss) Attributable to Noncontrolling Interest	140,282	76,447	69,110	65,977	42,745	45,063	45,097	37,162	351,816	170,067	99,368
Net income (loss) and comprehensive income (loss) attributable to Antero Resources Corporation	$ (121,546)	$ (154,419)	$ (136,385)	$ 14,833	$ 486,869	$ (135,063)	$ (5,132)	$ 268,396	$ (397,517)	$ 615,070	$ (848,816)
Earnings (loss) per common share - basic:
Earnings (loss) per common share - basic	$ (0.39)	$ (0.49)	$ (0.43)	$ 0.05	$ 1.54	$ (0.43)	$ (0.02)	$ 0.85	$ (1.26)	$ 1.95	$ (2.88)
Earnings (loss) per share - diluted:
Earnings (loss) per common share - diluted	$ (0.39)	$ (0.49)	$ (0.43)	$ 0.05	$ 1.54	$ (0.43)	$ (0.02)	$ 0.85	$ (1.26)	$ 1.94	$ (2.88)