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Assumptions Used to Determine Pension Year-End Benefit Obligations (Detail) (Pension Plan, Defined Benefit [Member])
Dec. 29, 2013
Dec. 30, 2012
Pension Plan, Defined Benefit [Member]
   
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Discount rate 4.75% 4.08%
Rate of compensation increase 2.97% 2.97%