STATEMENTS OF CONSOLIDATED CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net (loss) income	$ (131,063)	$ 321,886	$ 510,990
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Deferred income taxes	(180,261)	17,876	32,021
Depreciation, depletion and amortization	927,920	819,216	679,298
Asset and lease impairments and exploratory well costs	75,434	182,242	281,979
Gain on sale / exchange of assets	(8,025)	0	(34,146)
Gain on dispositions included in discontinued operations	0	0	(2,898)
Provision for (recoveries of) for losses on accounts receivable	3,856	(1,903)	88
Other income	(31,693)	(9,953)	(6,853)
Stock-based compensation expense	44,605	58,629	42,123
Gain recognized in operating revenues for hedging ineffectiveness	0	0	(24,774)
Loss (gain) on derivatives not designated as hedges	248,991	(385,762)	(80,942)
Cash settlements received on derivatives not designated as hedges	279,425	172,093	34,239
Pension settlement charge	9,403	0	0
Changes in other assets and liabilities:
Dividend from Nora Gathering, LLC	0	0	9,463
Excess tax benefits on stock-based compensation	(1,148)	(22,945)	(33,216)
Accounts receivable	(165,507)	131,031	(70,392)
Accounts payable	40,548	(37,623)	30,350
Other items, net	(48,165)	(27,847)	47,412
Net cash provided by operating activities	1,064,320	1,216,940	1,414,742
Cash flows from investing activities:
Capital expenditures	(1,539,494)	(2,434,018)	(2,277,306)
Capital expenditures for acquisitions	(1,051,239)	0	(174,184)
Investments in trading securities	(288,772)	0	0
Sales of investments in trading securities	3,890	0	0
Dry hole costs	0	(17,130)	(166)
Capital contributions to Mountain Valley Pipeline, LLC	(98,399)	(84,182)	0
Sales of interests in Mountain Valley Pipeline, LLC	12,533	9,723	0
Restricted cash, net	(75,000)	0	0
Proceeds from sale of assets	75,000	0	7,444
Net cash used in investing activities	(2,961,481)	(2,525,607)	(2,444,212)
Cash flows from financing activities:
Proceeds from the issuance of common shares of EQT Corporation, net of issuance costs	1,225,999	0	0
Proceeds from the issuance of common units of EQT Midstream Partners, LP, net of issuance costs	217,102	1,182,002	902,467
Proceeds from the sale of common units of EQT GP Holdings, LP, net of issuance costs	0	673,964	0
Proceeds from issuance of EQT Midstream Partners, LP debt	500,000	0	500,000
Increase in borrowings on EQT Midstream Partners, LP credit facility	740,000	617,000	450,000
Repayment of borrowings on EQT Midstream Partners, LP credit facility	(1,039,000)	(318,000)	(450,000)
Dividends paid	(20,156)	(18,310)	(18,207)
Distributions to noncontrolling interests	(189,981)	(121,759)	(67,819)
Repayments and retirements of debt	(5,119)	(169,004)	(11,162)
Proceeds and excess tax benefits from awards under employee compensation plans	6,165	36,965	52,373
Cash paid for taxes related to net settlement of share-based incentive awards	(26,931)	(47,013)	(51,262)
Debt issuance costs and revolving credit facility origination fees	(8,580)	0	(12,764)
Repurchase of common stock	(30)	(3,375)	(32,368)
Net cash provided by financing activities	1,399,469	1,832,470	1,261,258
Net change in cash and cash equivalents	(497,692)	523,803	231,788
Cash and cash equivalents at beginning of year	1,601,232	1,077,429	845,641
Cash and cash equivalents at end of year	1,103,540	1,601,232	1,077,429
Cash paid (received) during the year for:
Interest, net of amount capitalized	144,657	147,550	128,567
Income taxes, net	(41,142)	95,708	204,818
Noncash activity during the year for:
Increase in Mountain Valley Pipeline, LLC investment/payable for capital contributions	$ 11,471	$ 0	$ 0