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Inventories
 6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Inventories Inventories
The following table summarizes the components of inventory:
June 30,
2021		December 31,
2020
Raw materials and supplies$161.2 $124.7 
Work in process68.1 57.8 
Finished goods80.8 65.9 
Total inventories, net$310.1 $248.4 
The allowance for excess and obsolete inventory balance at June 30, 2021 and December 31, 2020 was $9.9 and $9.7, respectively. For discussion regarding the change in inventories, net, refer to Item 2. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Quarterly Report on Form 10-Q.