Segment Information - Schedule of Segment Reporting Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	$ 540,666	$ 530,017	$ 1,872,286	$ 1,671,103
Adjusted EBITDA	185,508	180,881	807,758	566,450
Segment Assets	2,659,515	2,722,276	2,659,515	2,722,276	$ 2,704,377
Depreciation, Depletion and Amortization	58,792	54,773	182,871	168,607
Capital Expenditures	41,667	58,395	117,749	134,456
Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	449,618	472,558	1,574,096	1,481,668
Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	22,676	14,840	80,755	58,016
Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	68,372	42,619	217,435	131,419
Other, Corporate and Eliminations
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	22,393	6,916	69,203	27,098
Adjusted EBITDA	(13,135)	(6,963)	(36,385)	(13,185)
Segment Assets	959,869	859,228	959,869	859,228
Depreciation, Depletion and Amortization	6,948	4,308	27,056	15,414
Capital Expenditures	3,633	6,035	13,714	47,085
Other, Corporate and Eliminations | Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	18,528	6,915	58,493	24,073
Other, Corporate and Eliminations | Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	0	0	0	0
Other, Corporate and Eliminations | Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	3,865	1	10,710	3,025
PAMC | Operating Segments
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	495,597	508,261	1,722,328	1,585,989
Adjusted EBITDA	183,790	179,516	784,819	541,753
Segment Assets	1,616,224	1,782,514	1,616,224	1,782,514
Depreciation, Depletion and Amortization	50,663	49,316	152,302	149,737
Capital Expenditures	35,404	50,112	99,706	84,763
PAMC | Operating Segments | Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	431,090	465,643	1,515,603	1,457,595
PAMC | Operating Segments | Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	0	0	0	0
PAMC | Operating Segments | Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	64,507	42,618	206,725	128,394
CONSOL Marine Terminal | Operating Segments
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	22,676	14,840	80,755	58,016
Adjusted EBITDA	14,853	8,328	59,324	37,882
Segment Assets	83,422	80,534	83,422	80,534
Depreciation, Depletion and Amortization	1,181	1,149	3,513	3,456
Capital Expenditures	2,630	2,248	4,329	2,608
CONSOL Marine Terminal | Operating Segments | Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	0	0	0	0
CONSOL Marine Terminal | Operating Segments | Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	22,676	14,840	80,755	58,016
CONSOL Marine Terminal | Operating Segments | Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	$ 0	$ 0	$ 0	$ 0