Derivatives - Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Related Party
Derivative [Line Items]
Due to affiliate, current	$ 108.3	$ 101.4
Commodity contracts \| Related Party
Derivative [Line Items]
Due to affiliate, current	4.0	6.4
Not designated as hedging instrument
Derivative [Line Items]
Derivative liability	6.7	7.9
Not designated as hedging instrument \| Commodity contracts
Derivative [Line Items]
Derivative asset	5.5	2.9
Derivative liability	6.7	7.8
Not designated as hedging instrument \| Foreign exchange contracts
Derivative [Line Items]
Derivative liability	$ 0.0	$ 0.1

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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