Goodwill, Customer Relationships and Other Intangible Assets - Schedule of Goodwill, Customer Relationships, and Other Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill	$ 12,657	$ 12,657
Indefinite-lived intangible assets	9	9
Total other intangible assets, net	6,034	6,166
Customer relationships
Goodwill [Line Items]
Finite-lived intangible assets, net	4,409	4,574
Accumulated amortization	3,771	3,606
Capitalized software
Goodwill [Line Items]
Finite-lived intangible assets, net	1,519	1,482
Accumulated amortization	3,801	3,895
Trade names, patents and other
Goodwill [Line Items]
Finite-lived intangible assets, net	97	101
Accumulated amortization	61	$ 188
Fully amortized and retired capitalized software
Goodwill [Line Items]
Gross carrying value	183
Fully amortized and retired trade names
Goodwill [Line Items]
Gross carrying value	$ 130