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Inventories
3 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Inventories INVENTORIES
The components of inventories are as follows:
 
 
31 December
 
30 September
 
 
2017
 
2017
Finished goods
 
$
135.1

 
$
120.0

Work in process
 
17.8

 
15.7

Raw materials, supplies and other
 
218.6

 
223.0

Total FIFO cost
 
$
371.5

 
$
358.7

Less: Excess of FIFO cost over LIFO cost
 
(24.1
)
 
(23.3
)
Inventories
 
$
347.4

 
$
335.4


First-in, first-out (FIFO) cost approximates replacement cost.