Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Cash and cash equivalents	$ 1,096	$ 1,290
Restricted cash and cash equivalents	127	140
Investments and restricted cash and cash equivalents and investments	21	15
Total cash and cash equivalents and restricted cash and cash equivalents	1,244	1,445	$ 1,268	$ 883
Interest paid, net of amounts capitalized	2,041	1,855	1,723
Income taxes received, net	1,309	1,361	850
Accruals related to property, plant and equipment additions	834	801	888
Related party, cash received (paid) for income taxes	$ 1,441	$ 1,504	$ 942