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Stock Transactions And Stock-Based Compensation (Components Of Stock-Based Compensation Program) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Apr. 01, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Pretax compensation expense $ 33.6 $ 29.6
Income tax benefit (10.5) (8.7)
Stock-based compensation expense, net of income taxes 23.1 20.9
Restricted stock units (“RSUs”)/performance stock units (“PSUs”)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Pretax compensation expense 21.6 19.9
Income tax benefit (6.7) (5.7)
Stock-based compensation expense, net of income taxes 14.9 14.2
Stock options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Pretax compensation expense 12.0 9.7
Income tax benefit (3.8) (3.0)
Stock-based compensation expense, net of income taxes $ 8.2 $ 6.7