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Inventories (Tables)
12 Months Ended
Sep. 30, 2018
Inventory Disclosure [Abstract]  
Inventories
Inventories consist of (in millions):
 
 
September 30,
 
 
2018
 
2017
Finished goods
 
$
224.3

 
$
218.7

Work in process
 
180.0

 
168.0

Raw materials
 
177.3

 
172.0

Inventories
 
$
581.6

 
$
558.7