Segment Information - Schedule of Segment Reporting Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	$ 654,023	$ 604,916	$ 1,331,620	$ 1,141,086
Adjusted EBITDA	275,950	216,339	622,250	385,569
Segment Assets	2,678,349	2,720,486	2,678,349	2,720,486	$ 2,704,377
Depreciation, Depletion and Amortization	64,528	57,880	124,079	113,834
Capital Expenditures	42,325	39,418	76,082	76,061
Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	541,099	532,726	1,124,478	1,009,110
Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	31,368	21,779	58,079	43,176
Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	81,556	50,411	149,063	88,800
Corporate And Reconciling Items
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	23,597	16,775	46,809	20,182
Adjusted EBITDA	(17,971)	(2,718)	(23,250)	(6,224)
Segment Assets	913,905	904,613	913,905	904,613
Depreciation, Depletion and Amortization	13,084	7,273	20,108	11,106
Capital Expenditures	3,706	17,557	10,081	41,050
Corporate And Reconciling Items | Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	19,923	13,750	39,965	17,157
Corporate And Reconciling Items | Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	0	0	0	0
Corporate And Reconciling Items | Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	3,674	3,025	6,844	3,025
Adjustments and Eliminations
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	0	0	0	0
Adjusted EBITDA	0	0	0	0
Segment Assets	0	0	0	0
Depreciation, Depletion and Amortization	0	0	0	0
Capital Expenditures	0	0	0	0
Adjustments and Eliminations | Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	0	0	0	0
Adjustments and Eliminations | Terminal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	0	0	0	0
Adjustments and Eliminations | Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	0	0	0	0
PAMC
Segment Reporting Information [Line Items]
Adjusted EBITDA	270,065	203,980	601,029	362,239
Depreciation, Depletion and Amortization	50,268	49,465	101,639	100,421
PAMC | Operating Segments
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	599,058	566,362	1,226,732	1,077,728
Adjusted EBITDA	270,065	203,980	601,029	362,239
Segment Assets	1,682,118	1,735,635	1,682,118	1,735,635
Depreciation, Depletion and Amortization	50,268	49,465	101,639	100,421
Capital Expenditures	37,495	21,673	64,302	34,651
PAMC | Operating Segments | Coal Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	521,176	518,976	1,084,513	991,953
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	77,882	47,386	142,219	85,775
CONSOL Marine Terminal
Segment Reporting Information [Line Items]
Adjusted EBITDA	23,856	15,077	44,471	29,554
Depreciation, Depletion and Amortization	1,176	1,142	2,332	2,307
CONSOL Marine Terminal | Operating Segments
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	31,368	21,779	58,079	43,176
Adjusted EBITDA	23,856	15,077	44,471	29,554
Segment Assets	82,326	80,238	82,326	80,238
Depreciation, Depletion and Amortization	1,176	1,142	2,332	2,307
Capital Expenditures	1,124	188	1,699	360
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	31,368	21,779	58,079	43,176
CONSOL Marine Terminal | Operating Segments | Freight Revenue
Segment Reporting Information [Line Items]
Total Revenue from Contracts with Customers	$ 0	$ 0	$ 0	$ 0