Goodwill and Intangible assets, net - Schedule of Intangible Asset Net Carrying Amount and Weighted Average Remaining Useful Lives (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Intangible Assets
Net Carrying Amount	$ 2,573
Total	2,573	$ 2,855
Customer-related and contract based intangibles
Intangible Assets
Net Carrying Amount	$ 2,235	$ 2,450
Weighted-average remaining useful lives (in years)	10 years 6 months	11 years 6 months
Technology related intangibles
Intangible Assets
Net Carrying Amount	$ 58	$ 97
Weighted-average remaining useful lives (in years)	1 year 7 months 6 days	2 years 7 months 6 days
Trade name
Intangible Assets
Net Carrying Amount	$ 280	$ 308
Weighted-average remaining useful lives (in years)	10 years 6 months	11 years 4 months 24 days