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v3.22.4

Related Party Transactions - Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jul. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 09, 2022
Related Party Transaction [Line Items] |  |  |  |  |
Net sales to Glencore |  | $ 1,671.1 | $ 1,337.0 | $ 1,025.5 |
Glencore | Supply Commitment |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Net sales to Glencore |  | $ 24.9 | 18.3 | 17.9 |
Glencore | Dispute Related to Alumina Purchases |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Gain (loss) related to litigation settlement | $ (4.0) |  |  |  |
Glencore |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Ownership percentage by noncontrolling owners |  | 42.90% |  |  |
Economic ownership percentage by related party |  | 46.10% |  |  |
Glencore |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Net sales to Glencore |  | $ 1,671.1 | $ 1,337.0 | $ 1,025.5 |
Affiliated Entity | Vlissingen Facility Agreement | Vlissingen |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Credit facility face amount |  |  |  |  | $ 90.0
Stated interest rate |  |  |  |  | 8.75%
Customer Concentration Risk | Sales Revenue | Glencore |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Major customer, percentage revenue, net |  | 60.00% | 60.00% | 64.00% |

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