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Earnings Per Share (Narrative) (Detail) (Stock Option [Member])
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 29, 2013
Sep. 30, 2012
Sep. 29, 2013
Sep. 30, 2012
Stock Option [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Shares considered anti-dilutive and excluded from computation 0.9 2.2 1.1 2.3