Derivative Instruments and Hedging Activities - Other Derivatives (Details) - Not designated as hedging instruments - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Gain (Loss) on Derivative Instruments: | ||||
| Amount of gain (loss) recognized in income on derivatives | $ (32.3) | $ 85.4 | ||
| Commodity swaps | Derivative Instruments, Gain (Loss) by Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold | ||||
| Gain (Loss) on Derivative Instruments: | ||||
| Amount of gain (loss) recognized in income on derivatives | (21.6) | $ 11.4 | 87.6 | $ 32.8 |
| Commodity options | Derivative Instruments, Gain (Loss) by Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold | ||||
| Gain (Loss) on Derivative Instruments: | ||||
| Amount of gain (loss) recognized in income on derivatives | $ (10.7) | $ (2.2) | ||