Goodwill, Customer Relationships and Other Intangible Assets - Goodwill Activity (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 6,666	$ 7,405
Reclassified as held for sale		(713)
Effect of foreign currency exchange rate changes and other	(58)	(26)
Goodwill impairment	(4,638)	0	$ 0
Goodwill, ending balance	1,970	6,666	7,405
Goodwill, accumulated impairment loss	$ 8,200	$ 3,600	$ 3,700