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v3.25.3

Derivatives - Narrative (Details) | 9 Months Ended |
--- | --- | ---
Sep. 30, 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) | 49,800 |
MWP Forward Financial Sales Contracts |  |
Derivative [Line Items] |  |
Open position to offset fixed prices (in tonnes) | 83,400 |
Fixed For Floating Swaps |  |
Derivative [Line Items] |  |
Open position to offset fixed prices (in tonnes) | 272 |
HFO Price Swaps |  |
Derivative [Line Items] |  |
Derivative liability (in MwH) | Boe | 280,000 |
Indiana Hub Power Price Swaps |  |
Derivative [Line Items] |  |
Derivative liability (in MwH) | MWh | 913,680 |

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