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Inventories
9 Months Ended 12 Months Ended
Feb. 28, 2013
May 31, 2012
Inventory Disclosure [Abstract]    
Inventories
Inventories.
Inventories are stated at the lower of cost or market, with cost determined under the first-in, first-out method. The Company reviews inventory on hand and writes down excess and slow-moving inventory based on an assessment of future demand and historical experience. Inventories consisted of the following:
 
(in millions)
February 28, 2013
 
May 31, 2012
Raw materials
$
81.9

 
$
78.3

Work-in-process
48.1

 
42.4

Finished goods
513.3

 
422.5

Inventories, net
$
643.3

 
$
543.2

Inventories.
Inventories are stated at the lower of cost or market, with cost determined under the first-in, first-out method. The Company reviews inventory on hand and writes down excess and slow-moving inventory based on an assessment of future demand and historical experience. Inventories consisted of the following:
(in millions)
May 31, 2012
 
May 31, 2011
Raw materials
$
78.3

 
$
85.0

Work-in-process
42.4

 
44.8

Finished goods
422.5

 
452.7

Inventories
$
543.2

 
$
582.5