Goodwill and Intangible assets, net - Schedule of Intangible Assets by Asset Class (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Intangible Assets
Total	$ 3,830	$ 3,830
Accumulated Amortization	1,186	975
Net Carrying Amount	2,644
Total	2,644	2,855
Customer-related and contract based intangibles
Intangible Assets
Gross Carrying Amount	3,192	3,192
Accumulated Amortization	903	742
Net Carrying Amount	2,289	2,450
Technology related intangibles
Intangible Assets
Gross Carrying Amount	230	230
Accumulated Amortization	162	133
Net Carrying Amount	68	97
Trade name
Intangible Assets
Gross Carrying Amount	408	408
Accumulated Amortization	121	100
Net Carrying Amount	$ 287	$ 308