Additional Balance Sheet Information (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Accounts receivable, net
Trade accounts	$ 1,004	$ 922
Joint interest accounts	70	83
Other accounts	22	34
Accounts receivable, gross	1,096	1,039
Allowance for doubtful accounts	(2)	(2)
Accounts receivable, net	1,094	1,037
Other assets
Deferred compensation plan	46	47
Debt issuance costs	4	5
Operating lease right-of-use assets	308	317
Other accounts	26	20
Other assets	384	389
Accounts payable
Trade accounts	41	94
Royalty and other owners	393	315
Accrued transportation	90	96
Accrued capital costs	149	88
Taxes other than income	77	60
Accrued lease operating costs	29	29
Other accounts	95	65
Accounts payable	874	747
Accrued liabilities
Employee benefits	92	124
Taxes other than income	13	13
Operating lease liabilities	71	69
Financing lease liabilities	6	14
Other accounts	27	40
Accrued liabilities	209	260
Other liabilities
Deferred compensation plan	60	56
Postretirement benefits	28	33
Operating lease liabilities	237	248
Financing lease liabilities	15	7
Other accounts	70	63
Other liabilities	$ 410	$ 407
Operating lease, right-of-use asset, statement of financial position [Extensible List]	Other assets	Other assets
Operating lease, liability, current, statement of financial position [Extensible List]	Accrued liabilities	Accrued liabilities
Finance lease, liability, current, statement of financial position [Extensible Enumeration]	Accrued liabilities	Accrued liabilities
Operating lease, liability, noncurrent, statement of financial position [Extensible List]	Other liabilities	Other liabilities
Finance lease, liability, noncurrent, statement of financial position [Extensible Enumeration]	Other liabilities	Other liabilities