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LONG-TERM DEBT - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Mar. 31, 2020
Debt Instrument [Line Items]
Less: Unamortized Debt Issuance Costs	$ 8,650	$ 9,386
Net Carrying Amount	2,576,577	2,166,000
Less: Current Portion	329,378	327,766
Long-Term Debt	2,247,199	1,838,234
Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, face amount				$ 160,000
Convertible 7.25% Senior Notes Due 2032
Debt Instrument [Line Items]
Debt instrument, face amount	600,000	400,000	$ 400,000
Debt instrument, unamortized discount	5,369	4,479
Net Carrying Amount	$ 594,631	395,521
Senior Notes due January 2029
Debt Instrument [Line Items]
Stated rate, debt instrument	6.00%
Net Carrying Amount	$ 500,000	500,000
Senior Notes due January 2031
Debt Instrument [Line Items]
Stated rate, debt instrument	7.375%
Debt instrument, face amount	$ 500,000
Debt instrument, unamortized discount	3,989	4,554
Net Carrying Amount	$ 496,011	495,446
Senior Notes due April 2030
Debt Instrument [Line Items]
Stated rate, debt instrument	4.75%
Debt instrument, face amount	$ 400,000	400,000
Debt instrument, unamortized discount	2,644	3,077
Net Carrying Amount	$ 397,356	396,923
Convertible Senior Notes due May 2026
Debt Instrument [Line Items]
Stated rate, debt instrument	2.25%
Debt instrument, face amount	$ 330,654
Debt instrument, unamortized discount	1,175	2,658
Net Carrying Amount	329,479	327,996
CNX Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Net Carrying Amount	247,250	43,450
CNX Midstream Partners LP Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Net Carrying Amount	$ 20,500	$ 16,050

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