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Derivatives - Net Gain (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Derivative [Line Items] |  |  |  |
Derivative gain (loss) on derivative, net | $ (4.0) | $ 9.1 | $ 3.4 | $ (48.5)
Commodity contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative gain (loss) on derivative, net | (4.0) | 9.1 | 3.5 | (50.1)
Commodity contracts | Related Party | Glencore |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative gain (loss) on derivative, net | (1.9) | 11.4 | 2.5 | (3.5)
Foreign exchange contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative gain (loss) on derivative, net | $ 0.0 | $ 0.0 | $ (0.1) | $ 1.6

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
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