Segment Information - Schedule of Segment Reporting Information by Segment (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		$ 677,597	$ 536,170
Adjusted EBITDA	[1]	346,300	169,230
Segment Assets		2,695,311	2,714,960	$ 2,704,377
Depreciation, Depletion and Amortization		59,551	55,954
Capital Expenditures		33,757	36,643
Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		583,379	476,384
Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		26,711	21,397
Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		67,507	38,389
Corporate And Reconciling Items
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		23,212	3,408
Adjusted EBITDA	[1]	(5,278)	(3,505)
Segment Assets		925,360	900,509
Depreciation, Depletion and Amortization		7,024	3,833
Capital Expenditures		6,375	23,493
Corporate And Reconciling Items | Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		20,042	3,408
Corporate And Reconciling Items | Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		0	0
Corporate And Reconciling Items | Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		3,170	0
Adjustments and Eliminations
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		0	0
Adjusted EBITDA	[1]	0	0
Segment Assets		0	0
Depreciation, Depletion and Amortization		0	0
Capital Expenditures		0	0
Adjustments and Eliminations | Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		0	0
Adjustments and Eliminations | Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		0	0
Adjustments and Eliminations | Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		0	0
PAMC
Segment Reporting Information [Line Items]
Adjusted EBITDA		330,963	158,258
Depreciation, Depletion and Amortization		51,371	50,956
PAMC | Operating Segments
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		627,674	511,365
Adjusted EBITDA	[1]	330,963	158,258
Segment Assets		1,687,932	1,734,316
Depreciation, Depletion and Amortization		51,371	50,956
Capital Expenditures		26,807	12,978
PAMC | Operating Segments | Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		563,337	472,976
PAMC | Operating Segments | Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		0	0
PAMC | Operating Segments | Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		64,337	38,389
CONSOL Marine Terminal
Segment Reporting Information [Line Items]
Adjusted EBITDA		20,615	14,477
Depreciation, Depletion and Amortization		1,156	1,165
CONSOL Marine Terminal | Operating Segments
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		26,711	21,397
Adjusted EBITDA	[1]	20,615	14,477
Segment Assets		82,019	80,135
Depreciation, Depletion and Amortization		1,156	1,165
Capital Expenditures		575	172
CONSOL Marine Terminal | Operating Segments | Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		0	0
CONSOL Marine Terminal | Operating Segments | Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		26,711	21,397
CONSOL Marine Terminal | Operating Segments | Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers		$ 0	$ 0

[1] Refer to “Reconciliation of Segment Information to Consolidated Amounts” for the reconciliation of Adjusted EBITDA, a non-GAAP measure, to its most directly comparable GAAP measure.