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Inventories
6 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of (in millions):
March 31, 2021September 30, 2020
Finished goods$284.1 $243.0 
Work in process174.1 159.1 
Raw materials222.9 181.9 
Inventories$681.1 $584.0