Summary of Significant Accounting Policies - Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Net income attributable to EQT Corporation – basic earnings available to shareholders	$ 1,770,965
Add back: Interest expense on Convertible Notes, net of tax	8,019
Diluted earnings available to shareholders	$ 1,778,984
Weighted average common stock outstanding - basic (in shares)	370,048	323,196	260,613
Weighted average common stock outstanding - diluted (in shares)	406,495	323,196	260,613
Income per share of common stock attributable to EQT Corporation: Basic (in dollars per share)	$ 4.79	$ (3.54)	$ (3.68)
Income per share of common stock attributable to EQT Corporation: Diluted (in dollars per share)	$ 4.38	$ (3.54)	$ (3.68)
Options, restricted stock, performance awards and stock appreciation rights
Class of Stock [Line Items]
Options, restricted stock, performance awards and stock appreciation rights and Convertible debt (in shares)	5,731
Convertible debt
Class of Stock [Line Items]
Options, restricted stock, performance awards and stock appreciation rights and Convertible debt (in shares)	30,716