Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ 2,118	$ (200)	$ 773
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depletion, depreciation and amortization	2,498	1,639	1,711
Exploration expenses	4	11	8
Deferred income taxes	583	(52)	240
(Gain) loss on disposition of assets, net	1,067	(9)	477
Loss on early extinguishment of debt	2	27	0
Accretion of discount on asset retirement obligations	7	9	10
Interest expense	10	34	5
Derivative-related activity	(451)	325	(8)
Amortization of stock-based compensation	106	72	100
Investment valuation adjustments	(1)	64	(15)
South Texas contingent consideration valuation adjustment	0	42	45
South Texas deficiency fee obligation, net	(10)	80	0
Other	163	128	143
Change in operating assets and liabilities:
Accounts receivable	(607)	309	(227)
Inventories	(125)	(20)	(20)
Operating lease right-of-use assets	52	64	0
Other assets	(73)	(40)	(33)
Accounts payable	1,059	(179)	(7)
Interest payable	(53)	(19)	0
Income taxes payable	41	1	(1)
Operating leases	(55)	(95)	0
Other liabilities	(276)	(108)	(86)
Net cash provided by operating activities	6,059	2,083	3,115
Cash flows from investing activities:
Proceeds from disposition of assets	3,244	60	149
Cash used in acquisitions, net of cash acquired	(826)	0	0
Proceeds from investments	0	0	624
Additions to oil and gas properties	(3,169)	(1,602)	(2,988)
Additions to other assets and other property and equipment	(118)	(126)	(232)
Net cash used in investing activities	(869)	(1,668)	(2,447)
Cash flows from financing activities:
Proceeds from issuance of senior notes, net of discount	3,247	1,091	0
Proceeds from issuance of convertible senior notes	0	1,323	0
Purchase of derivatives related to issuance of convertible senior notes	0	(113)	0
Borrowings under credit facility	650	800	0
Repayment of credit facilities	(1,287)	(800)	0
Repayment of senior notes, including tender offer premiums	(3,371)	(1,198)	0
Payments of other liabilities	(164)	(173)	(14)
Payments of financing fees	(32)	(36)	0
Purchases of treasury stock	(269)	(176)	(653)
Exercise of long-term incentive plan stock options	13	9	6
Dividends paid	(1,594)	(346)	(127)
Net cash provided by (used in) financing activities	(2,807)	381	(788)
Net increase (decrease) in cash, cash equivalents and restricted cash	2,383	796	(120)
Cash, cash equivalents and restricted cash, beginning of period	1,501	705	825
Cash, cash equivalents and restricted cash, end of period	$ 3,884	$ 1,501	$ 705