Accounts Receivable, Net of Allowances (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 62.2
Greater than 365 days past due	9.2
Spain
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	17.7
Greater than 365 days past due	0.9
Italy
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	27.1
Greater than 365 days past due	2.4
Greece
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	13.9
Greater than 365 days past due	4.6
Portugal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	3.5
Greater than 365 days past due	$ 1.3