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Inventories - Schedule of Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2021
Jun. 30, 2020
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 115.0 $ 217.6
Work in process 206.2 312.3
Finished and purchased products 104.5 194.4
Total inventory $ 425.7 $ 724.3