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Inventories (Tables)
3 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
Inventories consist of (in millions):
 
December 31,
2019
 
September 30,
2019
Finished goods
$
272.8

 
$
223.7

Work in process
179.0

 
178.4

Raw materials
173.5

 
173.6

Inventories
$
625.3

 
$
575.7