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Inventories
12 Months Ended
Mar. 31, 2019
Inventory Disclosure [Abstract]  
Inventories
Inventories
The major classes of inventories are summarized as follows (in millions):
 
March 31,
 
2019
 
2018
Finished goods
$
147.3

 
$
134.2

Work in progress
39.8

 
35.2

Purchased components
76.7

 
76.0

Raw materials
53.9

 
53.2

Inventories at First-in, First-Out ("FIFO") cost
317.7

 
298.6

Adjustment to state inventories at Last-in, First-Out ("LIFO") cost
(1.2
)
 
5.5

 
$
316.5

 
$
304.1