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Retirement Plans - Summary of Net Pension and Serp Expense Recognized (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]      
Service cost pertaining to benefits earned during the year $ (9.0) $ (7.7) $ (6.5)
Interest cost on projected benefit obligations (18.8) (15.3) (13.4)
Expected return on pension assets 21.0 15.9 14.3
Net amortization loss (30.5) (20.8) (11.9)
Net pension expense $ (37.3) $ (27.9) $ (17.5)