Accounts Receivable, Net of Allowances (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 56.6
Greater than 365 days past due	10.2
Spain
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	14.2
Greater than 365 days past due	1.3
Italy
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	26.8
Greater than 365 days past due	4.5
Greece
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	11.9
Greater than 365 days past due	3.8
Portugal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	3.7	[1]
Greater than 365 days past due	$ 0.6	[1]

[1] Subsequent cash collections in the fourth quarter of 2012 were approximately $0.6 million, of which $0.2 million related to receivables greater than 365 days past due.