Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets by Asset Class (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 9,059	$ 8,823
Accumulated Amortization and Impairment	3,233	3,096
Total	5,826	5,727
Customer-related and contract-based
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,974	7,738
Accumulated Amortization and Impairment	2,760	2,644
Total	5,214	5,094
Tradenames
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	718	716
Accumulated Amortization and Impairment	139	121
Total	579	595
Technology and other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	367	369
Accumulated Amortization and Impairment	334	331
Total	$ 33	$ 38