Rice Merger - Pro Forma Information (Details) - Rice Merger Agreement - USD ($) $ / shares in Units, $ in Thousands	2 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Revenue attributable to EQT	$ 323,414
Net income attributable to noncontrolling interests	16,644
Net income attributable to EQT	$ 529,743
Pro forma operating revenues		$ 4,809,757	$ 2,288,605
Pro forma net income (loss)		2,197,041	(528,786)
Pro forma net income attributable to noncontrolling interests		(444,248)	(401,149)
Pro forma net income (loss) attributable to EQT		$ 1,752,793	$ (929,935)
Pro forma income (loss) per share (basic) (in dollars per share)		$ 6.30	$ (3.59)
Pro forma income (loss) per share (diluted) (in dollars per share)		$ 6.29	$ (3.59)