Significant Accounting Policies - Schedule of Basic and Dilutive Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net Income (Loss)	$ 466,979	$ 34,110	$ (13,214)
Less: Net Loss Attributable to Noncontrolling Interest	0	0	(3,459)
Net Income (Loss) Attributable to CONSOL Energy Inc. Stockholders	$ 466,979	$ 34,110	$ (9,755)
Denominator:
Weighted-average shares of common stock outstanding (in shares)	34,811,906	34,404,360	26,066,971
Effect of dilutive shares	906,349	984,198	0
Weighted-average diluted shares of common stock outstanding (in shares)	35,718,255	35,388,558	26,066,971
Earnings (Loss) per Share:
Earnings (loss) per basic share (in dollars per share)	$ 13.41	$ 0.99	$ (0.37)
Earnings (loss) per dilutive share (in dollars per share)	$ 13.07	$ 0.96	$ (0.37)