Employee Benefit Plan - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 04, 2014	Sep. 28, 2013	Oct. 04, 2014	Sep. 28, 2013
Employee Benefit Plan [Abstract]
Profit Sharing and Retirement Savings Plan, plan expense	$ 37.3	$ 22.5	$ 77.5	$ 49.2