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Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Less: Unamortized Debt Issuance Costs	$ 10,147,000	$ 8,796,000
Long-Term Debt	2,618,375,000	2,378,205,000
Senior Notes due April 2022
Debt Instrument [Line Items]
Debt instrument, face amount	894,307,000	1,294,307,000
Debt instrument, unamortized premium	1,215,000	2,069,000
Long-term debt, gross	895,522,000	1,296,376,000
Senior Notes due March 2027
Debt Instrument [Line Items]
Debt instrument, face amount	500,000,000
Long-term debt, gross	500,000,000	0
Senior Notes due March 2026
Debt Instrument [Line Items]
Debt instrument, face amount	400,000,000	400,000,000
Debt instrument, unamortized discount	5,000,000	5,375,000
Long-term debt, gross	395,000,000	394,625,000
CNX Revolving Credit Facility | Revolving Credit Facility - CNXM
Debt Instrument [Line Items]
Long-term debt, gross	630,000,000	612,000,000
CNX Midstream Partners LP Revolving Credit Facility | Revolving Credit Facility - CNXM
Debt Instrument [Line Items]
Long-term debt, gross	$ 208,000,000	$ 84,000,000

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

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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