Goodwill and Intangible assets, net - Schedule of Intangible Asset Net Carrying Amount and Weighted Average Remaining Useful Lives (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Intangible Assets | ||
| Net Carrying Amount | $ 2,503 | |
| Total | 2,503 | $ 2,573 |
| Customer-related and contract based intangibles | ||
| Intangible Assets | ||
| Net Carrying Amount | $ 2,182 | $ 2,235 |
| Weighted-average remaining useful lives (in years) | 10 years 2 months 12 days | 10 years 6 months |
| Technology related intangibles | ||
| Intangible Assets | ||
| Net Carrying Amount | $ 48 | $ 58 |
| Weighted-average remaining useful lives (in years) | 1 year 4 months 24 days | 1 year 7 months 6 days |
| Trade name | ||
| Intangible Assets | ||
| Net Carrying Amount | $ 273 | $ 280 |
| Weighted-average remaining useful lives (in years) | 10 years 3 months 18 days | 10 years 6 months |