Subsidiary Guarantors - Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows provided by (used in) operating activities:
Net income (loss) and comprehensive income (loss) including noncontrolling interests	$ (338,810)	$ 1,025,756
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depletion, depreciation, amortization, and accretion	200,781	241,177
Impairments		88,226
Impairment of oil and gas properties	89,220	81,244
Commodity derivative fair value (gains) losses	(565,833)	77,368
Gains on settled commodity derivatives	210,926	97,092
Deferred income tax expense (benefit)	(109,985)	287,854
Equity-based compensation expense	3,329	8,903
Gain on early extinguishment of debt	80,561
Impairment of equity investments	610,632
Equity in earnings (loss) of unconsolidated affiliates	128,055	(14,081)
Distributions/dividends of earnings from unconsolidated affiliates	42,756	12,605
Gain on deconsolidation of Antero Midstream Partners LP		(1,406,042)
Other	2,440	11,081
Changes in current assets and liabilities	7,727	109,065
Net cash provided by operating activities	200,677	539,004
Cash flows provided by (used in) investing activities:
Additions to unproved properties	(10,357)	(27,463)
Drilling and completion costs	(300,483)	(368,687)
Additions to water handling and treatment systems		(24,416)
Additions to gathering systems and facilities		(48,239)
Additions to other property and equipment	(771)	(3,128)
Settlement of water earnout	125,000
Investments in unconsolidated affiliates		(25,020)
Proceeds from the Antero Midstream Partners LP Transactions		296,611
Change in other assets	(70)	(4,475)
Net cash used in investing activities	(186,681)	(204,817)
Cash flows provided by (used in) financing activities:
Repurchases of common stock	(42,690)
Issuance of senior notes		650,000
Repayment of senior notes	(300,835)
Borrowings (repayments) on bank credit facilities, net	330,000	(270,000)
Payments of deferred financing costs		(8,259)
Distributions to noncontrolling interests in Antero Midstream Partners LP		(85,076)
Employee tax withholding for settlement of equity compensation awards	(32)	(479)
Other	(439)	(841)
Net cash provided by financing activities	(13,996)	285,345
Effect of deconsolidation of Antero Midstream Partners LP		(619,532)
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	0	0
Reportable legal entity | Parent (Antero)
Cash flows provided by (used in) operating activities:
Net income (loss) and comprehensive income (loss) including noncontrolling interests	215,716	777,198
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depletion, depreciation, amortization, and accretion	200,781	219,407
Impairments		81,244
Impairment of oil and gas properties	89,220	81,244
Commodity derivative fair value (gains) losses	(565,833)	77,368
Gains on settled commodity derivatives	210,926	97,092
Deferred income tax expense (benefit)	(109,985)	287,854
Equity-based compensation expense	3,329	6,426
Gain on early extinguishment of debt	80,561
Equity in earnings of consolidated subsidiaries		(15,021)
Impairment of equity investments	143,849
Equity in earnings (loss) of unconsolidated affiliates	40,312	(589)
Distributions/dividends of earnings from unconsolidated affiliates	42,756
Gain on deconsolidation of Antero Midstream Partners LP		(1,205,705)
Distributions from Antero Midstream Partners LP		46,469
Other	2,440	10,331
Changes in current assets and liabilities	7,727	102,830
Net cash provided by operating activities	200,677	484,904
Cash flows provided by (used in) investing activities:
Additions to unproved properties	(10,357)	(27,463)
Drilling and completion costs	(300,483)	(389,252)
Additions to other property and equipment	(771)	(2,066)
Settlement of water earnout	125,000
Proceeds from the Antero Midstream Partners LP Transactions		296,611
Change in other assets	(70)	(1,118)
Net cash used in investing activities	(186,681)	(123,288)
Cash flows provided by (used in) financing activities:
Repurchases of common stock	(42,690)
Repayment of senior notes	(300,835)
Borrowings (repayments) on bank credit facilities, net	330,000	(360,379)
Payments of deferred financing costs		(791)
Employee tax withholding for settlement of equity compensation awards	(32)	(450)
Other	(439)	4
Net cash provided by financing activities	(13,996)	(361,616)
Reportable legal entity | Guarantor Subsidiaries
Cash flows provided by (used in) operating activities:
Net income (loss) and comprehensive income (loss) including noncontrolling interests	(554,526)	201,565
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Impairment of equity investments	466,783
Equity in earnings (loss) of unconsolidated affiliates	$ 87,743	(1,228)
Gain on deconsolidation of Antero Midstream Partners LP		(200,337)
Reportable legal entity | Non-Guarantor Subsidiaries
Cash flows provided by (used in) operating activities:
Net income (loss) and comprehensive income (loss) including noncontrolling interests		99,518
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depletion, depreciation, amortization, and accretion		21,770
Impairments		6,982
Equity-based compensation expense		2,477
Equity in earnings (loss) of unconsolidated affiliates		(12,264)
Distributions/dividends of earnings from unconsolidated affiliates		12,605
Other		750
Changes in current assets and liabilities		(10,573)
Net cash provided by operating activities		121,265
Cash flows provided by (used in) investing activities:
Additions to water handling and treatment systems		(24,547)
Additions to gathering systems and facilities		(48,239)
Additions to other property and equipment		(1,062)
Investments in unconsolidated affiliates		(25,020)
Change in other assets		(3,357)
Net cash used in investing activities		(102,225)
Cash flows provided by (used in) financing activities:
Issuance of senior notes		650,000
Borrowings (repayments) on bank credit facilities, net		90,379
Payments of deferred financing costs		(7,468)
Distributions to noncontrolling interests in Antero Midstream Partners LP		(131,545)
Employee tax withholding for settlement of equity compensation awards		(29)
Other		(845)
Net cash provided by financing activities		600,492
Effect of deconsolidation of Antero Midstream Partners LP		(619,532)
Eliminations
Cash flows provided by (used in) operating activities:
Net income (loss) and comprehensive income (loss) including noncontrolling interests		(52,525)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Equity in earnings of consolidated subsidiaries		15,021
Distributions from Antero Midstream Partners LP		(46,469)
Changes in current assets and liabilities		16,808
Net cash provided by operating activities		(67,165)
Cash flows provided by (used in) investing activities:
Drilling and completion costs		20,565
Additions to water handling and treatment systems		131
Net cash used in investing activities		20,696
Cash flows provided by (used in) financing activities:
Distributions to noncontrolling interests in Antero Midstream Partners LP		46,469
Net cash provided by financing activities		$ 46,469