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Related Party Transactions (Tables)
3 Months Ended
Mar. 31, 2021
Related Party Transactions [Abstract]  
Schedule of related party transactions
A summary of the aforementioned significant related party transactions is as follows: 
 
Three months ended March 31,
 
2021
2020
Net sales to Glencore$268.3 $271.0 
Purchases from Glencore72.3 40.2 
.