Segment Information - Schedule of Segment Reporting Information by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	$ 2,164,406	$ 2,506,635	$ 2,280,018
Freight Expense	274,026	294,103	182,441
Adjusted EBITDA	655,488	1,047,688	806,733
Segment Assets	2,879,543	2,675,003	2,704,377
Capital Expenditures	177,988	167,791	171,506
Corporate And Reconciling Items
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	127,067	97,511	49,609
Settlements of Commodity Derivatives			0
Cash Costs of Revenue	139,125	98,803	41,807
Freight Expense	7,633	15,755	4,831
Other Segment Items	31,230	34,748	21,592
Adjusted EBITDA	(50,921)	(51,795)	(18,621)
Segment Assets	1,051,605	1,009,247	865,676
Capital Expenditures	20,617	18,673	59,459
PAMC | Operating Segments
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	1,949,593	2,302,958	2,151,494
Settlements of Commodity Derivatives			289,228
Cash Costs of Revenue	973,139	939,892	834,405
Freight Expense	266,393	278,348	177,610
Other Segment Items	61,049	65,557	77,156
Adjusted EBITDA	649,012	1,019,161	773,095
Segment Assets	1,739,792	1,582,434	1,756,368
Capital Expenditures	149,021	144,550	107,401
CONSOL Marine Terminal | Operating Segments
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	87,746	106,166	78,915
Settlements of Commodity Derivatives			0
Cash Costs of Revenue	27,372	27,259	24,758
Freight Expense	0	0	0
Other Segment Items	2,977	(1,415)	1,898
Adjusted EBITDA	57,397	80,322	52,259
Segment Assets	88,146	83,322	82,333
Capital Expenditures	$ 8,350	$ 4,568	$ 4,646