LONG-TERM DEBT - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Net Carrying Amount	$ 2,223,745	$ 2,421,359
Less: Unamortized Debt Issuance Costs	11,528	8,062
Less: Current Portion	0	208,095
Long-Term Debt	$ 2,223,745	2,213,264
Convertible 7.25% Senior Notes Due 2032
Debt Instrument [Line Items]
Stated rate, debt instrument	7.25%
Principal	$ 600,000
Debt instrument, unamortized discount	4,742	5,160
Net Carrying Amount	$ 595,258	594,840
Senior Notes due March 2034
Debt Instrument [Line Items]
Stated rate, debt instrument	5.875%
Net Carrying Amount	$ 500,000	0
Senior Notes due January 2031
Debt Instrument [Line Items]
Stated rate, debt instrument	7.375%
Principal	$ 500,000
Debt instrument, unamortized discount	3,423	3,800
Net Carrying Amount	$ 496,577	496,200
Senior Notes due April 2030
Debt Instrument [Line Items]
Stated rate, debt instrument	4.75%
Principal	$ 400,000	400,000
Debt instrument, unamortized discount	2,212	2,500
Net Carrying Amount	397,788	397,500
CNX Revolving Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Net Carrying Amount	155,650	200,000
CNX Midstream Partners LP Revolving Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Net Carrying Amount	$ 90,000	32,750
Senior Notes due January 2029
Debt Instrument [Line Items]
Stated rate, debt instrument	6.00%
Net Carrying Amount	$ 0	500,000
Convertible Senior Notes due May 2026
Debt Instrument [Line Items]
Stated rate, debt instrument	2.25%
Principal	$ 208,556	208,556
Debt instrument, unamortized discount	425	425
Net Carrying Amount	$ 0	$ 208,131

Face (par) amount of debt instrument at time of issuance.

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