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Net Income Per Common Share (Narrative) (Details) - shares
shares in Millions
3 Months Ended 6 Months Ended
Jul. 01, 2016
Jul. 03, 2015
Jul. 01, 2016
Jul. 03, 2015
Net Income Per Common Share [Abstract]        
Antidilutive common share equivalents 0.9 0.5 0.9 0.6