Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows from Operating Activities:
Net Income (Loss)	$ 753,696	$ 104,104
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Net Income from Discontinued Operations	0	(95,099)
Depreciation, Depletion and Amortization	363,338	289,329
Amortization of Deferred Financing Costs	6,640	6,636
Impairment of Exploration and Production Properties	0	137,865
Impairment of Other Intangible Assets	18,650	0
Stock-Based Compensation	15,861	13,071
Gain on Sale of Assets	(148,942)	(184,319)
Gain on Previously Held Equity Interest	(623,663)	0
Loss on Debt Extinguishment	54,433	1,233
Gain on Commodity Derivative Instruments	(78,752)	(80,508)
Net Cash Received (Paid) in Settlement of Commodity Derivative Instruments	2,518	(61,717)
Deferred Income Taxes	259,116	21,066
Equity in Earnings of Affiliates	(4,688)	(34,810)
Changes in Operating Assets:
Accounts and Notes Receivable	50,125	12,742
Recoverable Income Taxes	(8,501)	15,908
Supplies Inventories	1,016	(6,164)
Prepaid Expenses	(337)	6,127
Changes in Other Assets	(683)	(32,790)
Changes in Operating Liabilities:
Accounts Payable	2,532	15,359
Accrued Interest	5,812	32,501
Other Operating Liabilities	30,418	32,724
Changes in Other Liabilities	(9,736)	16,915
Net Cash Provided by Continuing Operating Activities	690,219	275,753
Net Cash Provided by Discontinued Operating Activities	0	206,097
Net Cash Provided by Operating Activities	690,219	481,850
Cash Flows from Investing Activities:
Capital Expenditures	(794,124)	(399,462)
CNX Gathering LLC Acquisition, Net of Cash Acquired	(299,272)	0
Proceeds from Asset Sales	500,811	408,957
Net Distributions from Equity Affiliates	7,750	35,620
Net Cash (Used in) Provided by Continuing Investing Activities	(584,835)	45,115
Net Cash Used in Discontinued Investing Activities	0	(33,237)
Net Cash (Used in) Provided by Investing Activities	(584,835)	11,878
Cash Flows from Financing Activities:
Payments on Miscellaneous Borrowings	(5,455)	(6,024)
Payments on Long-Term Notes	(935,419)	(213,728)
Net Payments on CNXM Revolving Credit Facility	(105,500)	0
Proceeds from CNX Revolving Credit Facility	439,000	0
Proceeds from Issuance of CNXM Senior Notes	394,000	0
Distributions to CNXM Noncontrolling Interest Holders	(40,839)	0
Proceeds from Issuance of Common Stock	1,689	859
Shares Withheld for Taxes	(5,335)	(6,346)
Purchases of Common Stock	(294,365)	0
Debt Repurchase and Financing Fees	(19,655)	(298)
Net Cash Used in Continuing Financing Activities	(571,879)	(225,537)
Net Cash Used in Discontinued Financing Activities	0	(33,332)
Net Cash Used in Financing Activities	(571,879)	(258,869)
Net (Decrease) Increase in Cash and Cash Equivalents	(466,495)	234,859
Cash and Cash Equivalents at Beginning of Period	509,167	46,299
Cash and Cash Equivalents at End of Period	$ 42,672	$ 281,158