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Inventories (Tables)
12 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Components of Inventories
The components of inventories are as follows:
30 September
 
2019

 
2018

Finished goods
 

$128.8

 

$125.4

Work in process
 
27.5

 
21.2

Raw materials, supplies and other
 
232.0

 
249.5

Inventories
 

$388.3

 

$396.1