Business Acquisitions, Dispositions, Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 2,020	$ 2,110
Accumulated Amortization	(1,657)	(1,698)
Trademarks and other	6	7
Intangible Assets, Gross (Excluding Goodwill), Total	2,026	2,117
Purchased service portfolios
Finite-Lived Intangible Assets [Line Items]
Gross Amount	1,939	2,025
Accumulated Amortization	(1,599)	(1,638)
Patents, trademarks/trade names
Finite-Lived Intangible Assets [Line Items]
Gross Amount	20	21
Accumulated Amortization	(16)	(17)
Customer relationships and other
Finite-Lived Intangible Assets [Line Items]
Gross Amount	61	64
Accumulated Amortization	$ (42)	$ (43)