Derivative Financial Instruments - Schedule of Derivative Instruments Designated As Hedging Instrument Effect on Condensed Consolidated Statements of Comprehensive Income (Details) - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - Foreign exchange contracts [Member] - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Derivative [Line Items] | ||
| (Loss)/gain recognized in OCI (effective element) | $ (2) | $ 3 |
| Gain/(loss) reclassified from Accumulated OCL into income (effective element) | 1 | 0 |
| Revenue [Member] | ||
| Derivative [Line Items] | ||
| Gain/(loss) reclassified from Accumulated OCL into income (effective element) | 0 | 1 |
| Salaries and Benefits [Member] | ||
| Derivative [Line Items] | ||
| Gain/(loss) reclassified from Accumulated OCL into income (effective element) | 0 | (1) |
| Other Income/(loss) [Member] | ||
| Derivative [Line Items] | ||
| Gain/(loss) reclassified from Accumulated OCL into income (effective element) | $ 1 | $ 0 |