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Inventories (Tables)
9 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
Inventories consist of (in millions):
 
June 30,
2019
 
September 30,
2018
Finished goods
$
267.1

 
$
224.3

Work in process
203.2

 
180.0

Raw materials
186.0

 
177.3

Inventories
$
656.3

 
$
581.6