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Related Party Transactions (Tables)
3 Months Ended
Mar. 31, 2020
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,
 
2020
 
2019
Net sales to Glencore
$
271.0

 
$
311.3

Purchases from Glencore
40.2

 
90.7

Purchases from BHH (1)

 
6.1


              
(1) We previously owned a 40% interest in Baise Haohai Carbon Co. Ltd. ("BHH") and purchased carbon anodes from them for use in our operations. Purchases represented herein were prior to the divestiture of our interest in BHH on May 22, 2019.