Employee Benefit Plan - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Employee Benefit Plans [Line Items]
Profit Sharing and Retirement Savings Plan, plan expense	$ 13.1	$ 17.9	$ 26.7	$ 40.6