Derivative Instruments (Net Cash Received (Paid) Related to Derivatives) (Details) - USD ($) $ in Millions |
9 Months Ended | |
|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | ||
| Operating activities | $ 0.2 | $ 69.4 |
| Investing activities | 0.0 | (1.8) |
| Financing activities | (16.5) | 82.7 |
| Total | $ (16.3) | $ 150.3 |