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v3.25.1

Derivatives - Narrative (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 USD ($) Boe MWh t | Dec. 31, 2024 USD ($)
Derivative [Line Items] |  |
Restricted cash | $ | $ 0 | $ 0
Fixed To Variable London Metals Exchange Swap |  |
Derivative [Line Items] |  |
Open position to offset fixed prices (in tonnes) | 36,600 |
MWP Forward Financial Sales Contracts |  |
Derivative [Line Items] |  |
Open position to offset fixed prices (in tonnes) | 36,600 |
Fixed For Floating Swaps |  |
Derivative [Line Items] |  |
Open position to offset fixed prices (in tonnes) | 1,270 |
HFO Price Swaps |  |
Derivative [Line Items] |  |
Derivative liability (in MwH) | Boe | 300,000 |
Indiana Hub Power Price Swaps |  |
Derivative [Line Items] |  |
Derivative liability (in MwH) | MWh | 677,712 |

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