Derivative Instruments - Derivatives Gains and Losses (Details) - Derivatives not designated as hedging instruments: - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Total (losses) gains | $ (3.9) | $ (7.5) | $ 9.1 | $ (29.2) |
| Commodity derivatives | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Gains (losses) on derivatives | (3.3) | (7.5) | 12.0 | (29.2) |
| Gain (loss) on derivatives not designated as hedging instruments | (6.3) | (0.2) | (4.7) | (9.2) |
| Interest Rate Swap | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Gains (losses) on derivatives | (0.6) | 0.0 | (2.9) | 0.0 |
| Gain (loss) on derivatives not designated as hedging instruments | $ (1.8) | $ 0.0 | $ (5.2) | $ 0.0 |