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Long Term Debt and Capital Leases (Parenthetical) (Detail) (4.375% Senior Notes)
Apr. 20, 2013
Dec. 29, 2012
Apr. 21, 2012
4.375% Senior Notes
     
Debt Instrument [Line Items]      
Interest rate 4.375% 4.375% 4.375%
Senior notes due year     2022