Stock Based Compensation (Expense Included in Selling, General and Administrative Expenses Related to Stock Options and Restricted Stock Awards) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Dec. 30, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 9.9	$ 10.3	$ 9.2
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 9.9	$ 10.3	$ 9.2