Goodwill, Customer Relationships and Other Intangible Assets - Schedule of Goodwill, Customer Relationships, and Other Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Goodwill And Intangible Assets [Line Items]
Goodwill	$ 3,864	$ 12,657
Indefinite-lived intangible assets	9	9
Total other intangible assets, net	5,899	6,166
Customer Relationships
Goodwill And Intangible Assets [Line Items]
Finite-lived intangible assets, net	4,246	4,574
Accumulated amortization	3,931	3,606
Capitalized Software
Goodwill And Intangible Assets [Line Items]
Finite-lived intangible assets, net	1,551	1,482
Accumulated amortization	3,869	3,895
Trade Names, Patents and Other
Goodwill And Intangible Assets [Line Items]
Finite-lived intangible assets, net	93	101
Accumulated amortization	$ 65	188
Fully Amortized and Retired Capitalized Software
Goodwill And Intangible Assets [Line Items]
Gross carrying value		183
Fully Amortized and Retired Trade Names
Goodwill And Intangible Assets [Line Items]
Gross carrying value		$ 130