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Inventories (Tables)
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Summary of Inventories
Inventories consisted of the following:
(in millions)June 30,
2021
December 31, 2020
Raw materials$14.2 $16.6 
Work in process2.6 2.4 
Finished goods11.5 9.0 
Total inventories$28.3 $28.0