Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash Flows from Operating Activities:
Net (Loss) Income	$ (624,502)	$ 272,004
Adjustments to Reconcile Net (Loss) Income to Net Cash Provided by Operating Activities:
Depreciation, Depletion and Amortization	357,174	374,619
Amortization of Deferred Financing Costs	14,602	6,057
Impairment of Exploration and Production Properties	61,849	0
Impairment of Goodwill	473,045	0
Stock-Based Compensation	11,909	36,557
Gain on Asset Sales and Abandonments	(21,559)	(610)
(Gain) Loss on Debt Extinguishment	(10,812)	7,614
Loss (Gain) on Commodity Derivative Instruments	116,995	(240,118)
Loss on Other Derivative Instruments	14,389	0
Net Cash Received in Settlement of Commodity Derivative Instruments	383,727	26,331
Deferred Income Taxes	(186,707)	78,133
Equity in Loss (Earnings) of Affiliates	1,025	(1,703)
Return on Equity Investment	0	3,256
Changes in Operating Assets:
Accounts and Notes Receivable	64,843	154,715
Recoverable Income Taxes	61,781	138,406
Supplies Inventories	(3,106)	2,188
Prepaid Expenses	4,700	5,725
Changes in Other Assets	267	9
Changes in Operating Liabilities:
Accounts Payable	(29,641)	55,280
Accrued Interest	(13,967)	2,359
Other Operating Liabilities	(40,479)	(31,689)
Changes in Other Liabilities	(1,186)	(23,041)
Net Cash Provided by Operating Activities	634,347	866,092
Cash Flows from Investing Activities:
Capital Expenditures	(395,236)	(964,502)
Proceeds from Asset Sales	31,981	15,276
Net Cash Used in Investing Activities	(363,255)	(949,226)
Cash Flows from Financing Activities:
Payments on Miscellaneous Borrowings	(5,348)	(5,322)
Payments on Long-Term Notes	(518,865)	(405,876)
Net Proceeds from CNXM Revolving Credit Facility	31,250	162,000
Net (Payments on) Proceeds from CNX Revolving Credit Facility	(251,000)
Net (Payments on) Proceeds from CNX Revolving Credit Facility		1,200
Proceeds from Issuance of CNX Senior Notes	207,000	500,000
Net Proceeds from CSG Non-Revolving Credit Facilities	164,381	0
Proceeds from Issuance of Convertible Senior Notes	334,650	0
Purchase of Capped Call Related to Convertible Senior Notes	(35,673)	0
Distributions to CNXM Noncontrolling Interest Holders	(41,987)	(47,062)
Proceeds from Issuance of Common Stock	1,805	210
Shares Withheld for Taxes	(1,954)	(6,284)
Purchases of Common Stock	0	(117,477)
Debt Issuance and Financing Fees	(15,313)	(9,969)
Net Cash (Used in) Provided by Financing Activities	(131,054)	71,420
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	140,038	(11,714)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	16,283	17,198
Cash, Cash Equivalents, and Restricted Cash at End of Period	$ 156,321	$ 5,484