Income Tax Provision (Benefit) Allocation (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011
Provision For Income Taxes [Line Items]
Income tax provision (benefit) attributable to income before income taxes	$ 6.2	$ (0.9)	$ 12.2
Other comprehensive income
Income Tax Expense (Benefit), Intraperiod Tax Allocation, Total	$ 6.2	$ (0.9)	$ 12.2