Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Inventories - Components of Inventories (Detail)

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Inventories - Components of Inventories (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Mar. 31, 2013
Inventory Disclosure [Abstract]    
Finished goods $ 135.5 $ 115.8
Work-in-process 6.6 7.6
Raw materials and supplies 56.5 55.1
Provision for obsolete finished goods and raw materials (7.9) (6.4)
Total inventories $ 190.7 $ 172.1