Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
CASH FLOW FROM OPERATING ACTIVITIES
Net (loss) income	$ (1,999)	$ 124
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation, depletion and amortization	296	357
Asset impairments	1,736	0
Net derivative (gain) loss from commodity contracts	(75)	31
Net proceeds from settled commodity derivatives	105	68
Net gain on early extinguishment of debt	(5)	(108)
Amortization of deferred gain	(39)	(54)
Reorganization items, net (non-cash)	(125)	0
Reorganization items, net (debtor-in-possession financing costs)	25	0
Dry hole expenses	0	7
Other non-cash charges to income, net	69	60
Changes in operating assets and liabilities, net	153	55
Net cash provided by operating activities	141	540
CASH FLOW FROM INVESTING ACTIVITIES
Capital investments	(37)	(393)
Decreases in accrued capital investments	(25)	(49)
Asset divestitures	41	164
Acquisitions	0	(6)
Other	(7)	(7)
Net cash used in investing activities	(28)	(291)
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from 2014 Revolving Credit Facility	797	1,749
Repayments of 2014 Revolving Credit Facility	(1,315)	(1,776)
Proceeds from debtor-in-possession facilities	782	0
Repayments of debtor-in-possession facilities	(49)	0
Debtor-in-possession financing costs	(25)	0
Debt repurchases	(3)	(149)
Debt transaction costs	0	(2)
2020 Senior Notes payment	(100)	0
Contributions from noncontrolling interest holders, net	1	49
Distributions paid to noncontrolling interest holders	(95)	(115)
Issuance of common stock	0	3
Shares cancelled for taxes	(1)	(3)
Net cash used in financing activities	(8)	(244)
Increase in cash	105	5
Cash—beginning of period	17	17
Cash—end of period	$ 122	$ 22