Accounts Receivable, Net of Allowances (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 62.7
Greater than 365 days past due	9.7
Spain
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	18.5
Greater than 365 days past due	0.4
Italy
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	27.5
Greater than 365 days past due	4.5
Greece
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	13.0
Greater than 365 days past due	4.0
Portugal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	3.7
Greater than 365 days past due	$ 0.8