Derivative Instruments (Realized and Unrealized Losses on Derivatives) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Derivative [Line Items] | ||||
| Total | $ 325.8 | $ (46.4) | $ 476.2 | $ (617.1) |
| Cross-currency and interest rate derivative contracts | ||||
| Derivative [Line Items] | ||||
| Total | 325.0 | 36.6 | 471.8 | (397.3) |
| Foreign currency forward and option contracts | ||||
| Derivative [Line Items] | ||||
| Total | 0.8 | 1.5 | 4.4 | (12.2) |
| Equity-related derivative instruments | ||||
| Derivative [Line Items] | ||||
| Total | $ 0.0 | $ (84.5) | $ 0.0 | $ (207.6) |