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Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Apr. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019
Debt Instrument [Line Items]
Debt instrument, face amount			$ 1,000
Long-term Debt Including Current Maturities	$ 2,214,121,000	$ 2,424,001,000
Less: Unamortized Debt Issuance Costs	17,396,000	26,852,000
Less: Current Portion	0	22,574,000
Long-Term Debt	$ 2,214,121,000	2,401,427,000
Senior Notes due March 2027 at 7.25%
Debt Instrument [Line Items]
Stated rate, debt instrument	0.0725%
Debt instrument, face amount	$ 700,000,000	700,000,000			$ 500,000,000
Debt Instrument, unamortized premium	5,609,000	6,686,000
Long-term Debt Including Current Maturities	$ 705,609,000	706,686,000
Senior Notes due January 2029 at 6.00%
Debt Instrument [Line Items]
Stated rate, debt instrument	0.06%
Long-term Debt Including Current Maturities	$ 500,000,000	500,000,000
Senior Notes due April 2030
Debt Instrument [Line Items]
Stated rate, debt instrument	0.0475%
Debt instrument, face amount	$ 400,000,000
Debt Instrument, unamortized premium	4,808,000
Long-term Debt Including Current Maturities	$ 395,192,000	0
Senior Notes due May 2026
Debt Instrument [Line Items]
Stated rate, debt instrument	0.0225%
Debt instrument, face amount	$ 345,000,000	345,000,000
Debt instrument, unamortized discount	91,284,000	107,735,000
Long-term Debt Including Current Maturities	$ 253,716,000	$ 237,265,000
Senior Notes due March 2026
Debt Instrument [Line Items]
Stated rate, debt instrument	6.50%	0.065%
Debt instrument, face amount		$ 400,000,000
Debt instrument, unamortized discount		3,875,000
Long-term Debt Including Current Maturities	$ 0	396,125,000
Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, face amount						$ 160,000,000
Revolving Credit Facility | CNX Revolving Credit Facility
Debt Instrument [Line Items]
Long-term Debt Including Current Maturities	192,000,000	160,800,000
Revolving Credit Facility | CNX Midstream Partners LP Revolving Credit Facility
Debt Instrument [Line Items]
Long-term Debt Including Current Maturities	185,000,000	291,000,000
Credit Facility
Debt Instrument [Line Items]
Debt instrument, face amount				$ 175,000,000
Credit Facility | Cardinal States Gathering Company Credit Facility
Debt Instrument [Line Items]
Debt instrument, face amount		114,985,000
Debt instrument, unamortized discount		1,126,000
Long-term Debt Including Current Maturities	0	113,859,000
Credit Facility | CSG Holdings II LLC Credit Facility
Debt Instrument [Line Items]
Debt instrument, face amount		45,559,000
Debt instrument, unamortized discount		441,000
Long-term Debt Including Current Maturities	$ 0	$ 45,118,000

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