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Inventories
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventories
8. Inventories

The components of inventories were as follows:
December 31,
(in millions)20212020
Raw materials$67.5 $36.8 
Work in process4.1 3.5 
Finished goods356.4 264.8 
Total inventories$428.0 $305.1