STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net (loss) income		$ (1,221,695)	$ (2,007,158)	$ 1,858,142
Net change in cash flow hedges:
Natural gas, net of tax expense (benefit): $2,584 in 2018 and ($3,191) in 2017		0	(4,625)	(4,982)
Interest rate, net of tax expense: $210, $80 and $105		387	168	144
Other postretirement benefits liability adjustment, net of tax expense: $150, $510 and $193		316	606	338
Change in accounting principle	[1]	(496)	0	0
Other comprehensive income (loss)		207	(3,851)	(4,500)
Comprehensive (loss) income		(1,221,488)	(2,011,009)	1,853,642
Less: Net income from discontinued operations attributable to noncontrolling interests		0	237,410	349,613
Comprehensive (loss) income attributable to EQT Corporation		$ (1,221,488)	$ (2,248,419)	$ 1,504,029

[1] Related to adoption of Accounting Standards Update (ASU) 2018-02. See Note 1.