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Inventories (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Components of Inventories
The following table summarizes the components of Inventories:
(in millions)March 31,
2021
December 31,
2020
Finished goods$99.2 $95.3 
Raw materials86.2 76.6 
Work in process19.2 13.1 
Total inventories (a)
$204.6 $185.0 
(a)     Amounts at March 31, 2021 include inventories acquired in the OSW acquisition - see Note 2 – Acquisitions.