Segment Information - Schedule of Adjusted EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Net Income	$ 58,061	$ 167,723	$ 159,952	$ 398,100
Income Tax Expense	9,027	37,574	25,870	79,167
Interest Expense	4,993	7,155	10,399	17,434
Interest Income	(4,627)	(3,711)	(9,129)	(5,378)
Depreciation, Depletion and Amortization	54,847	64,528	111,844	124,079
Stock-Based Compensation	2,237	1,993	7,355	6,785
Loss on Debt Extinguishment	0	688	0	2,063
Adjusted EBITDA	124,538	275,950	306,291	622,250
Other, Corporate and Eliminations
Segment Reporting Information [Line Items]
Net Income	(38,555)	(72,007)	(68,666)	(135,394)
Income Tax Expense	9,027	37,574	25,870	79,167
Interest Expense	3,475	5,629	7,360	14,382
Interest Income	(3,307)	(3,198)	(6,516)	(4,457)
Depreciation, Depletion and Amortization	9,939	13,084	17,426	20,108
Stock-Based Compensation	345	259	1,030	881
Loss on Debt Extinguishment		688		2,063
Adjusted EBITDA	(19,076)	(17,971)	(23,496)	(23,250)
PAMC | Operating Segments
Segment Reporting Information [Line Items]
Net Income	94,295	218,636	212,466	494,611
Income Tax Expense	0	0	0	0
Interest Expense	0	0	0	0
Interest Income	(1,320)	(513)	(2,613)	(921)
Depreciation, Depletion and Amortization	43,675	50,268	91,944	101,639
Stock-Based Compensation	1,796	1,674	5,982	5,700
Loss on Debt Extinguishment		0		0
Adjusted EBITDA	138,446	270,065	307,779	601,029
CONSOL Marine Terminal | Operating Segments
Segment Reporting Information [Line Items]
Net Income	2,321	21,094	16,152	38,883
Income Tax Expense	0	0	0	0
Interest Expense	1,518	1,526	3,039	3,052
Interest Income	0	0	0	0
Depreciation, Depletion and Amortization	1,233	1,176	2,474	2,332
Stock-Based Compensation	96	60	343	204
Loss on Debt Extinguishment		0		0
Adjusted EBITDA	$ 5,168	$ 23,856	$ 22,008	$ 44,471