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Fire at Australian Manufacturing Facility - Nature of Expenses as Well as Insurance Receivables and Amounts Already Received Related to Fire (Detail) (Picton Facility [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 30, 2012
Picton Facility [Member]
Property, Plant and Equipment [Line Items]
Impairment of fixed assets at the Picton Facility	$ 22.3
Incremental payroll costs	2.9
Incremental shipping costs	15.5
Other incremental costs	2.9
Total incurred costs through December 30, 2012	43.6
Insurance recovery receivable	22.9
Insurance recoveries already received	$ 20.7

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.