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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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