Derivative Financial Instruments - Schedule of Derivative Obligations Under Terminated Hedge Arrangements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative [Line Items]
Noncash derivative gain (loss), net			$ 95	$ (636)
Derivative gain (loss), net	$ 13	$ (501)	(187)	(2,024)
0.250% convertible senior notes due 2025 | Convertible debt
Derivative [Line Items]
Noncash derivative gain (loss), net	(23)	0	0	0
Cash payments on settled derivatives, net	17		17	0
Derivative gain (loss), net	(6)	0	17	0
Commodity price derivatives
Derivative [Line Items]
Noncash derivative gain (loss), net	59	(10)	20	(639)
Cash payments on settled derivatives, net	(121)	(486)	(252)	(1,357)
Derivative gain (loss), net	(62)	(496)	(232)	(1,996)
Cash receipts (payments/deferred obligations) related to offsetting oil and gas commodity derivative trades	83		244
Marketing derivatives
Derivative [Line Items]
Noncash derivative gain (loss), net	99	6	75	3
Cash payments on settled derivatives, net	(18)	(11)	(47)	(31)
Derivative gain (loss), net	$ 81	$ (5)	$ 28	(28)
WTI Swap Contract
Derivative [Line Items]
Cash payments on settled derivatives, net				$ 13