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
Mar. 31, 2019
Mar. 31, 2018
Payables and Accruals [Abstract]    
Trade creditors $ 142.4 $ 111.8
Accrued interest 8.8 12.5
Other creditors and accruals 104.3 69.0
Total accounts payable and accrued liabilities $ 255.5 $ 193.3