Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net Income (Loss)	$ 466,979	$ 34,110	$ (13,214)
Other Comprehensive Income (Loss):
Amortization of Prior Service Credits (net of tax: $561, $601, $619)	(1,844)	(1,804)	(1,786)
Recognized Net Actuarial Loss (net of tax: $(2,459), $(5,122), $(5,596))	8,076	15,374	16,161
Settlement Loss Recognized (net of tax: $0, $(6), $0)	0	16	0
Other Comprehensive Gain (Loss) before Reclassifications (net of tax: $(30,516), $(21,979), $109)	99,164	65,617	(145)
Unrecognized Gain (Loss) on Derivatives:
Unrealized Gain (Loss) on Cash Flow Hedges (net of tax: $116, $596, $674)	401	1,721	(2,004)
Other Comprehensive Income	105,797	80,924	12,226
Comprehensive Income (Loss)	572,776	115,034	(988)
Less: Comprehensive Loss Attributable to Noncontrolling Interest	0	0	(3,400)
Comprehensive Income Attributable to CONSOL Energy Inc. Stockholders	$ 572,776	$ 115,034	$ 2,412