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Financial Instruments (Effects Of Derivative Instruments Designated As Cash Flow Hedges Included In Accumulated OCI On Consolidated Balance Sheets) (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Jan. 01, 2011
Treasury Locks [Member] | Interest Expense [Member]
     
Investment Holdings [Line Items]      
Effective Portion of Gain Recognized in Accumulated OCI       $ 2.1
Effective Portion of Gain Reclassified Accumulated OCI into Income 0.4 0.4  
Firm Commitments [Member] | Net Sales [Member]
     
Investment Holdings [Line Items]      
Effective Portion of Gain Recognized in Accumulated OCI       0.1
Effective Portion of Gain Reclassified Accumulated OCI into Income     $ 0.1