Goodwill and Other Intangible Assets (Goodwill Roll Forward) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Goodwill	$ 3,750	$ 3,750	$ 3,788
Accumulated impairment losses	(3,388)	(3,388)	(2,611)
Net balance	362	362	1,177
Goodwill impairment expense	(777)	(777)	0	$ 0
Goodwill, Acquired During Period		3
Goodwill, Written off Related to Sale of Business Unit		(41)
Operating Segments [Member] | MCAC [Member]
Goodwill [Roll Forward]
Goodwill	16	16	16
Accumulated impairment losses	0	0	0
Net balance	16	16	16
Goodwill impairment expense		0
Goodwill, Acquired During Period		0
Goodwill, Written off Related to Sale of Business Unit		0
Operating Segments [Member] | EURASIA [Member]
Goodwill [Roll Forward]
Goodwill	0	0	0
Accumulated impairment losses	0	0	0
Net balance	0	0	0
Goodwill impairment expense		0
Goodwill, Acquired During Period		0
Goodwill, Written off Related to Sale of Business Unit		0
Operating Segments [Member] | US and Utilities SBU
Goodwill [Roll Forward]
Goodwill	3,087	3,087	3,127
Accumulated impairment losses	(2,744)	(2,744)	(2,611)
Net balance	343	343	516
Goodwill impairment expense		133
Goodwill, Acquired During Period		0
Goodwill, Written off Related to Sale of Business Unit		(40)
Operating Segments [Member] | South America
Goodwill [Roll Forward]
Goodwill	644	644	644
Accumulated impairment losses	(644)	(644)	0
Net balance	0	0	644
Goodwill impairment expense		644
Goodwill, Acquired During Period		0
Goodwill, Written off Related to Sale of Business Unit		0
Operating Segments [Member] | Corporate and Other
Goodwill [Roll Forward]
Goodwill	3	3	1
Accumulated impairment losses	0	0	0
Net balance	$ 3	3	$ 1
Goodwill impairment expense		0
Goodwill, Acquired During Period		3
Goodwill, Written off Related to Sale of Business Unit		$ (1)