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

Accounts Payable and Accrued Liabilities - Components of Accounts Payable and Accrued Liabilities (Detail)

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Accounts Payable and Accrued Liabilities - Components of Accounts Payable and Accrued Liabilities (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Mar. 31, 2012
Accounts Payable And Accrued Liabilities [Line Items]    
Trade creditors $ 69.6 $ 67.3
Other creditors and accruals 28.5 25.3
Total accounts payable and accrued liabilities $ 98.1 $ 92.6