Derivative Instruments (Realized and Unrealized Losses on Derivatives) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Derivative [Line Items] | ||||
| Total | $ 18.2 | $ (406.0) | $ 150.4 | $ (570.7) |
| Cross-currency and interest rate derivative contracts | ||||
| Derivative [Line Items] | ||||
| Total | 16.6 | (323.2) | 146.8 | (433.9) |
| Foreign currency forward and option contracts | ||||
| Derivative [Line Items] | ||||
| Total | 1.6 | (9.0) | 3.6 | (13.7) |
| Equity-related derivative instruments | ||||
| Derivative [Line Items] | ||||
| Total | 0.0 | (73.9) | 0.0 | (123.1) |
| Other | ||||
| Derivative [Line Items] | ||||
| Total | $ 0.0 | $ 0.1 | $ 0.0 | $ 0.0 |