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Related Party Transactions - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Related Party Transaction [Line Items]        
Net sales $ 483.5 $ 306.4 $ 916.6 $ 574.7
Glencore [Member]        
Related Party Transaction [Line Items]        
Net sales 483.5 306.4 916.6 574.7
Glencore [Member] | Supply Commitment [Member]        
Related Party Transaction [Line Items]        
Net sales $ 13.9 $ 11.4 $ 13.9 $ 11.4
Consolidated sales [Member] | Customer concentration risk [Member] | Glencore [Member]        
Related Party Transaction [Line Items]        
Major customer, percentage of revenue, net (percent) 57.00% 58.00%    
Glencore [Member]        
Related Party Transaction [Line Items]        
Ownership percentage by noncontrolling owners 42.90%   42.90%  
Economic ownership percentage by related party 46.30%   46.30%