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Income Per Share (Narrative) (Detail)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Oct. 03, 2014
Sep. 27, 2013
Oct. 03, 2014
Sep. 27, 2013
Income Per Share [Line Items]        
Shares excluded from calculation of diluted income per share 1.7 3.5 0.5 3.0