Segment Information - Schedule of Segment Reporting Information by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenue from contracts with customers	$ 2,280,018	$ 1,261,034	$ 879,462
Adjusted EBITDA	806,733	378,246	261,523
Segment Assets	2,704,377	2,573,517	2,523,366
Depreciation, Depletion and Amortization	226,878	224,583	210,760
Capital Expenditures	171,506	132,752	86,004
Coal Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	2,018,662	1,092,022	772,662
Terminal Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	78,915	65,193	66,810
Freight Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	182,441	103,819	39,990
Corporate And Reconciling Items
Segment Reporting Information [Line Items]
Revenue from contracts with customers	49,609	6,942	1,299
Adjusted EBITDA	(18,621)	(25,725)	(11,044)
Segment Assets	865,676	691,031	550,141
Depreciation, Depletion and Amortization	21,954	13,022	7,393
Capital Expenditures	59,459	30,882	14,354
Corporate And Reconciling Items | Coal Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	44,778	6,942	1,299
Corporate And Reconciling Items | Terminal Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	0	0	0
Corporate And Reconciling Items | Freight Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	4,831	0	0
Adjustments and Eliminations
Segment Reporting Information [Line Items]
Revenue from contracts with customers	0	0	0
Adjusted EBITDA	0	0	0
Segment Assets	0	0	0
Depreciation, Depletion and Amortization	0	0	0
Capital Expenditures	0	0	0
Adjustments and Eliminations | Coal Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	0	0	0
Adjustments and Eliminations | Terminal Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	0	0	0
Adjustments and Eliminations | Freight Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	0	0	0
PAMC
Segment Reporting Information [Line Items]
Adjusted EBITDA	773,095	360,480	228,211
Depreciation, Depletion and Amortization	200,320	206,727	198,272
PAMC | Operating Segments
Segment Reporting Information [Line Items]
Revenue from contracts with customers	2,151,494	1,188,899	811,353
Adjusted EBITDA	773,095	360,480	228,211
Segment Assets	1,756,368	1,773,609	1,864,514
Depreciation, Depletion and Amortization	200,320	206,727	198,272
Capital Expenditures	107,401	100,896	70,195
PAMC | Operating Segments | Coal Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	1,973,884	1,085,080	771,363
PAMC | Operating Segments | Terminal Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	0	0	0
PAMC | Operating Segments | Freight Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	177,610	103,819	39,990
CONSOL Marine Terminal
Segment Reporting Information [Line Items]
Adjusted EBITDA	52,259	43,491	44,356
Depreciation, Depletion and Amortization	4,604	4,834	5,095
CONSOL Marine Terminal | Operating Segments
Segment Reporting Information [Line Items]
Revenue from contracts with customers	78,915	65,193	66,810
Adjusted EBITDA	52,259	43,491	44,356
Segment Assets	82,333	108,877	108,711
Depreciation, Depletion and Amortization	4,604	4,834	5,095
Capital Expenditures	4,646	974	1,455
CONSOL Marine Terminal | Operating Segments | Coal Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	0	0	0
CONSOL Marine Terminal | Operating Segments | Terminal Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	78,915	65,193	66,810
CONSOL Marine Terminal | Operating Segments | Freight Revenue
Segment Reporting Information [Line Items]
Revenue from contracts with customers	$ 0	$ 0	$ 0