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Inventories
12 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of (in millions):
 September 30,
 20232022
Finished goods$545.9 $325.0 
Work in process395.7 317.3 
Raw materials463.3 411.9 
Inventories$1,404.9 $1,054.2