Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share Reconciliation [Abstract]
Net income (loss) attributable to EQT Corporation – basic earnings available to shareholders	$ 1,218,548	$ (1,516,048)
Add back: Interest expense on Convertible Notes, net of tax	1,854	0
Diluted earnings (loss) available to shareholders	$ 1,220,402	$ (1,516,048)
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted average common stock outstanding - basic (in shares)	361,462	374,142
Weighted average common stock outstanding - diluted (in shares)	393,883	374,142
Diluted (Note 7):
Income (loss) per share of common stock attributable to EQT Corporation - Basic (in dollars per share)	$ 3.37	$ (4.05)
Income (loss) per share of common stock attributable to EQT Corporation - Diluted (in dollars per share)	$ 3.10	$ (4.05)
Options, restricted stock, performance awards, and stock appreciation rights
Diluted (Note 7):
Shares excluded from potentially dilutive securities (in shares)		7,300
Convertible notes
Diluted (Note 7):
Shares excluded from potentially dilutive securities (in shares)		33,500
Options, restricted stock, performance awards, and stock appreciation rights
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Potentially dilutive securities included in the calculation of diluted earnings (in shares)	4,226	0
Convertible notes
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Potentially dilutive securities included in the calculation of diluted earnings (in shares)	28,195	0