Antero Midstream Partners LP (Details) $ in Thousands					12 Months Ended
	Sep. 11, 2017 USD ($) shares	Feb. 06, 2017 USD ($) shares	Mar. 30, 2016 USD ($) shares	Sep. 23, 2015 USD ($) shares bbl	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Antero Midstream Partners LP
Investments in unconsolidated affiliates					$ 303,302	$ 68,299
Equity in earnings of unconsolidated affiliate					20,194	485
Issuance of common stock						1,012,431	$ 537,832
Consideration:
Amount borrowed on bank credit facility					90,000	(677,000)	$ (403,000)
Equity Transactions
Proceeds From Sale Of Interest In Partnership Unit					311,100	178,000
Antero Midstream Partners LP
Antero Midstream Partners LP
Equity in earnings of unconsolidated affiliate					$ 20,194	$ 485
Antero Resources ownership in Antero Midstream					52.90%
Consideration:
Cash distribution				$ 552,000
Assumed debt				$ 171,000
Common units issued | shares				10,988,421
Antero Midstream Partners LP | Contingent Consideration Period One
Consideration:
Contingent consideration				$ 125,000
Threshold number of barrels of water to trigger contingent consideration payment | bbl				176,295,000
Antero Midstream Partners LP | Contingent Consideration Period Two
Consideration:
Contingent consideration				$ 125,000
Threshold number of barrels of water to trigger contingent consideration payment | bbl				219,200,000
Antero Midstream Partners LP | Private Placement
Equity Transactions
Proceeds from issuance of common units				$ 241,000
Antero Midstream Partners LP | At the Market Program
Equity Transactions
Units sold under At the Market program (in units) | shares					777,262
Proceeds from issuance of common units					$ 25,500
Aggregate dollar amount of common units available for issuance and sale under equity distribution agreement					250,000
Remaining capacity under equity distribution agreement					$ 157,300
Antero Midstream Partners LP
Antero Midstream Partners LP
Number of shares of common stock issued (in shares) | shares		6,900,000
Issuance of common stock		$ 223,000
Antero Resources ownership in Antero Midstream					52.90%	60.90%
Equity Transactions
Number of Antero Midstream common units sold by Antero Resources (in units) | shares	10,000,000		8,000,000
Proceeds From Sale Of Interest In Partnership Unit	$ 311,000		$ 178,000