Derivatives - Components of Commodity Swap Gain (Loss) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2023 |
Mar. 31, 2022 |
|
| Derivatives | ||
| Change in fair value of interest rate swaps | $ (1.4) | $ (15.1) |
| Gain (loss) on derivative activity | 11.9 | (31.2) |
| Commodity swaps | ||
| Derivatives | ||
| Change in fair value of interest rate swaps | (1.4) | (15.1) |
| Realized gain (loss) on derivatives | 13.3 | (16.1) |
| Gain (loss) on derivative activity | $ 11.9 | $ (31.2) |