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Inventories
3 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Inventories
3. Inventories

Major components of inventories are summarized below.

(In millions)September 30, 2021June 30, 2021
Raw materials$15.8 $13.9 
Work in process11.9 13.2 
Finished goods2.0 2.2 
Inventories$29.7 $29.3