STATEMENTS OF CONSOLIDATED EQUITY - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests in Consolidated Subsidiaries
Beginning Balance (in shares) at Dec. 31, 2013		150,884,000
Beginning Balance at Dec. 31, 2013	$ 4,864,128	$ 1,422,105	$ 2,567,980	$ 44,703	$ 829,340
Increase (Decrease) in Stockholders' Equity
Net (loss) income	510,990		386,965		124,025
Net change in cash flow hedges:
Natural gas, net of tax	155,422			155,422
Interest rate, net of tax	145			145
Pension and other post-retirement benefits liability adjustment, net of tax	(776)			(776)
Dividends ($0.12 per share)	(18,207)		(18,207)
Stock-based compensation plans, net (in shares)		1,012,000
Stock-based compensation plans, net	59,081	$ 56,846			2,235
Distributions to noncontrolling interests	(67,819)				(67,819)
Issuance of common units of EQT Midstream Partners, LP	902,467				902,467
Repurchase and retirement of common stock (in shares)		(300,000)
Repurchase and retirement of common stock	(32,368)	$ (12,759)	(19,609)
Ending Balance (in shares) at Dec. 31, 2014		151,596,000
Ending Balance at Dec. 31, 2014	$ 6,373,063	$ 1,466,192	2,917,129	199,494	1,790,248
Net change in cash flow hedges:
Common stock, authorized (in shares)	320,000,000
Preferred stock, authorized shares	3,000,000
Preferred stock, shares issued (in shares)	0
Net (loss) income	$ 321,886		85,171		236,715
Natural gas, net of tax	(152,359)			(152,359)
Interest rate, net of tax	144			144
Pension and other post-retirement benefits liability adjustment, net of tax	(901)			(901)
Dividends ($0.12 per share)	(18,310)		(18,310)
Stock-based compensation plans, net (in shares)		996,000
Stock-based compensation plans, net	78,434	$ 77,378			1,056
Distributions to noncontrolling interests	(121,759)				(121,759)
Sale of common units of EQT GP Holdings, LP	673,964				673,964
Issuance of common units of EQT Midstream Partners, LP	1,182,002				1,182,002
Changes in ownership of consolidated subsidiaries	(304,747)	$ 507,228			(811,975)
Repurchase and retirement of common stock (in shares)		(38,000)
Repurchase and retirement of common stock	(3,375)	$ (1,597)	(1,778)
Ending Balance (in shares) at Dec. 31, 2015		152,554,000
Ending Balance at Dec. 31, 2015	$ 8,028,042	$ 2,049,201	2,982,212	46,378	2,950,251
Net change in cash flow hedges:
Common stock, authorized (in shares)	320,000,000
Preferred stock, authorized shares	3,000,000
Preferred stock, shares issued (in shares)	0
Net (loss) income	$ (131,063)		(452,983)		321,920
Natural gas, net of tax	(55,155)			(55,155)
Interest rate, net of tax	144			144
Pension and other post-retirement benefits liability adjustment, net of tax	10,675			10,675
Dividends ($0.12 per share)	(20,156)		(20,156)
Stock-based compensation plans, net (in shares)		724,000
Stock-based compensation plans, net	42,943	$ 42,782			161
Distributions to noncontrolling interests	(189,981)				(189,981)
Issuance of common shares of EQT Corporation (in shares)		19,550,000
Issuance of common shares of EQT Corporation	1,225,999	$ 1,225,999
Issuance of common units of EQT Midstream Partners, LP	217,102				217,102
Elimination of net deferred taxes	5,921	5,921
Changes in ownership of consolidated subsidiaries	(15,194)	$ 25,293			(40,487)
Repurchase and retirement of common stock (in shares)		(1,000)
Repurchase and retirement of common stock	(30)	$ (30)
Ending Balance (in shares) at Dec. 31, 2016		172,827,000
Ending Balance at Dec. 31, 2016	$ 9,119,247	$ 3,349,166	$ 2,509,073	$ 2,042	$ 3,258,966
Net change in cash flow hedges:
Common stock, authorized (in shares)	320,000,000
Preferred stock, authorized shares	3,000,000
Preferred stock, shares issued (in shares)	0