Income Taxes - Schedule of Changes in Valuation Allowance (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Valuation Allowance [Roll Forward] | |||
| Balance at beginning of period | $ 2,115.8 | $ 1,942.5 | $ 1,780.4 |
| Balance at end of period | 2,204.8 | 2,115.8 | 1,942.5 |
| Net tax expense related to operations | |||
| Valuation Allowance [Roll Forward] | |||
| Changes in valuation allowances | 88.0 | 171.8 | 161.5 |
| Translation adjustments | |||
| Valuation Allowance [Roll Forward] | |||
| Changes in valuation allowances | 0.2 | (0.6) | (1.1) |
| Business acquisitions and other | |||
| Valuation Allowance [Roll Forward] | |||
| Changes in valuation allowances | $ 0.8 | $ 2.1 | $ 1.7 |