Financial Statements - Schedule of Accounting Standards Update and Change in Accounting Principle (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Interest expense	$ 60,138	$ 75,509	$ 194,025	$ 218,236
Income tax benefit	152,206	(661,380)	(5,257)	(1,020,650)
Net income (loss)	687,462	(1,976,211)	67,103	(2,947,474)
Less: Net income attributable to noncontrolling interests	3,792	601	8,120	25
Net income (loss) attributable to EQT Corporation	$ 683,670	$ (1,976,812)	$ 58,983	$ (2,947,499)
Basic and diluted:
Weighted average common stock outstanding - Basic (in shares)	369,987	356,792	371,308	304,961
Weighted average common stock outstanding - Diluted (in shares)	403,889	356,792	377,028	304,961
Loss per share of common stock attributable to EQT Corporation - Basic (in dollars per share)	$ 1.85	$ (5.54)	$ 0.16	$ (9.67)
Loss per share of common stock attributable to EQT Corporation - Diluted (in dollars per share)	$ 1.69	$ (5.54)	$ 0.16	$ (9.67)
Current portion of debt	$ 421,987		$ 421,987		$ 1,060,970
Deferred income taxes	893,139		893,139		907,306
Common stock, no par value	9,923,539		9,923,539		10,071,820
Accumulated deficit	$ (299,577)		$ (299,577)		(94,400)
As Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Interest expense		$ 80,349		$ 232,434
Income tax benefit		(662,915)		(1,025,255)
Net income (loss)		(1,979,516)		(2,957,067)
Less: Net income attributable to noncontrolling interests		601		25
Net income (loss) attributable to EQT Corporation		$ (1,980,117)		$ (2,957,092)
Basic and diluted:
Weighted average common stock outstanding - Basic (in shares)		356,792		304,961
Weighted average common stock outstanding - Diluted (in shares)		356,792		304,961
Loss per share of common stock attributable to EQT Corporation - Basic (in dollars per share)		$ (5.55)		$ (9.70)
Loss per share of common stock attributable to EQT Corporation - Diluted (in dollars per share)		$ (5.55)		$ (9.70)
Current portion of debt					954,900
Deferred income taxes					938,612
Common stock, no par value					10,167,963
Accumulated deficit					(115,779)
ASU 2020-06 Adoption Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Interest expense		$ (4,840)		$ (14,198)
Income tax benefit		1,535		4,605
Net income (loss)		3,305		9,593
Less: Net income attributable to noncontrolling interests		0		0
Net income (loss) attributable to EQT Corporation		$ 3,305		$ 9,593
Basic and diluted:
Weighted average common stock outstanding - Basic (in shares)		0		0
Weighted average common stock outstanding - Diluted (in shares)		0		0
Loss per share of common stock attributable to EQT Corporation - Basic (in dollars per share)		$ 0.01		$ 0.03
Loss per share of common stock attributable to EQT Corporation - Diluted (in dollars per share)		$ 0.01		$ 0.03
Current portion of debt					106,070
Deferred income taxes					(31,306)
Common stock, no par value					(96,143)
Accumulated deficit					$ 21,379