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Net Income Per Common Share (Narrative) (Details) - shares
shares in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2016
Oct. 02, 2015
Sep. 30, 2016
Oct. 02, 2015
Net Income Per Common Share [Abstract]        
Antidilutive common share equivalents 0.8 0.5 0.9 0.5