Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOW FROM OPERATING ACTIVITIES
Net loss	$ (175)	$ (89)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, depletion and amortization	49	52
Deferred income tax benefit	(33)	0
Asset impairments	0	3
Net loss from commodity derivatives	562	213
Net payments on settled commodity derivatives	(181)	(39)
Net loss on early extinguishment of debt	0	2
Net gain on asset divestitures	(54)	(2)
Other non-cash charges to income, net	8	7
Changes in operating assets and liabilities, net	(16)	0
Net cash provided by operating activities	160	147
CASH FLOW FROM INVESTING ACTIVITIES
Capital investments	(99)	(27)
Changes in accrued capital investments	3	5
Proceeds from asset divestitures	60	2
Acquisitions	(17)	0
Net cash used in investing activities	(53)	(20)
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from Senior Notes	0	600
Debt issuance costs	0	(12)
Repurchases of common stock	(71)	0
Common stock dividends	(13)	0
Distributions paid to a noncontrolling interest holder	0	(14)
Net cash used in financing activities	(84)	(25)
Increase in cash	23	102
Cash—beginning of period	305	28
Cash—end of period	328	130
Revolving Credit Facility
CASH FLOW FROM FINANCING ACTIVITIES
Proceeds from Revolving Credit Facility	0	16
Repayments of Revolving Credit Facility	0	(115)
Second Lien Notes
CASH FLOW FROM FINANCING ACTIVITIES
Repayments of senior debt	0	(200)
EHP Notes
CASH FLOW FROM FINANCING ACTIVITIES
Repayments of senior debt	$ 0	$ (300)