Intangible Assets - Schedule of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 3,255	$ 3,569
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	2,899	3,196
Accumulated amortization	4,648	4,504
Capitalized software
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	356	373
Accumulated amortization	$ 484	$ 451