Subsidiary Guarantor (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed consolidated statement of cash flows
Net cash provided by operating activities	$ 998,121	$ 534,707	$ 332,255
Cash flows used in investing activities:
Additions to proved properties	(64,066)	(15,300)	(10,254)
Additions to unproved properties	(777,422)	(440,825)	(687,403)
Drilling and completion costs	(2,477,150)	(1,615,965)	(836,350)
Additions to fresh water distribution systems	(196,675)	(203,790)	(2,801)
Additions to gathering systems and facilities	(558,037)	(389,453)	(142,294)
Additions to other property and equipment	(13,218)	(6,240)	(3,447)
Decrease in notes receivable	2,667	4,555	4,889
Change in other assets	(5,749)	(6,574)	(3,707)
Net cash used in investing activities	(4,089,650)	(2,673,592)	(463,491)
Cash flows from financing activities:
Issuance of common units in Antero Midstream Partners LP	1,087,224
Issuance of senior notes	1,102,500	1,231,750	300,000
Repayment of senior notes	(260,000)	(690,000)
Borrowings (repayments) on bank credit facility, net	1,442,000	71,000	(148,000)
Make-whole premium on debt extinguished	(17,383)	(33,041)
Payments of deferred financing costs	(31,543)	(20,899)	(5,926)
Other	(2,777)		808
Net cash provided by financing activities	3,320,021	2,137,383	146,882
Net increase (decrease) in cash and cash equivalents	228,492	(1,502)	15,646
Cash and cash equivalents, beginning of period	17,487	18,989	3,343
Cash and cash equivalents, end of period	245,979	17,487	18,989
Reportable legal entity | Antero Resources Corp
Condensed consolidated statement of cash flows
Net cash provided by operating activities	992,788
Cash flows used in investing activities:
Additions to proved properties	(64,066)
Additions to unproved properties	(777,422)
Drilling and completion costs	(2,477,150)
Additions to fresh water distribution systems	(196,675)
Additions to gathering systems and facilities	(543,196)
Additions to other property and equipment	(13,218)
Decrease in notes receivable	2,667
Change in other assets	(5,595)
Net distributions from subsidiaries	447,500
Net cash used in investing activities	(3,627,155)
Cash flows from financing activities:
Issuance of senior notes	1,102,500
Repayment of senior notes	(260,000)
Borrowings (repayments) on bank credit facility, net	1,837,000
Make-whole premium on debt extinguished	(17,383)
Payments of deferred financing costs	(26,673)
Other	(2,777)
Net cash provided by financing activities	2,632,667
Net increase (decrease) in cash and cash equivalents	(1,700)
Cash and cash equivalents, beginning of period	17,487
Cash and cash equivalents, end of period	15,787
Reportable legal entity | Guarantor Subsidiary
Cash flows from financing activities:
Distributions to Antero	(115,000)
Borrowings (repayments) on bank credit facility, net	115,000
Reportable legal entity | Non-Guarantor Subsidiaries
Condensed consolidated statement of cash flows
Net cash provided by operating activities	5,333
Cash flows used in investing activities:
Additions to gathering systems and facilities	(14,841)
Change in other assets	(154)
Net cash used in investing activities	(14,995)
Cash flows from financing activities:
Distributions to Antero	(332,500)
Issuance of common units in Antero Midstream Partners LP	1,087,224
Borrowings (repayments) on bank credit facility, net	(510,000)
Payments of deferred financing costs	(4,870)
Net cash provided by financing activities	239,854
Net increase (decrease) in cash and cash equivalents	230,192
Cash and cash equivalents, end of period	230,192
Eliminations
Cash flows used in investing activities:
Net distributions from subsidiaries	(447,500)
Net cash used in investing activities	(447,500)
Cash flows from financing activities:
Distributions to Antero	447,500
Net cash provided by financing activities	$ 447,500