Property, Equipment and Software, net (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property, equipment and software, at cost | $ 1,959.6 | $ 1,967.0 |
| Less: Accumulated depreciation | (1,378.2) | (1,377.7) |
| Property, equipment and software, net | 587.1 | 596.3 |
| Computers and equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, equipment and software, at cost | 1,101.6 | 1,114.5 |
| Software | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, equipment and software, at cost | 437.1 | 428.6 |
| Furniture and fixtures | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, equipment and software, at cost | 7.2 | 7.3 |
| Buildings and leasehold improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Property, equipment and software, at cost | 413.7 | 416.6 |
| Work in process | ||
| Property, Plant and Equipment [Line Items] | ||
| Work in process | $ 5.7 | $ 7.0 |