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Derivatives - Assets and Liabilities (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Related Party |  |
Derivative [Line Items] |  |
Due to affiliate, current | $ 131.8 | $ 101.4
Commodity contracts | Related Party |  |
Derivative [Line Items] |  |
Due to affiliate, current | 3.4 | 6.4
Not designated as hedging instrument |  |
Derivative [Line Items] |  |
Derivative liability | 3.8 | 7.9
Not designated as hedging instrument | Commodity contracts |  |
Derivative [Line Items] |  |
Derivative asset | 5.3 | 2.9
Derivative liability | 3.8 | 7.8
Not designated as hedging instrument | Foreign exchange contracts |  |
Derivative [Line Items] |  |
Derivative liability | $ 0.0 | $ 0.1

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