Stock Transactions And Stock-Based Compensation (Components of Stock-Based Compensation Program) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	$ 40.1	$ 37.8	$ 73.4	$ 71.4
Income tax benefit	(8.5)	(11.8)	(15.5)	(22.3)
Stock-based compensation expense, net of income taxes	31.6	26.0	57.9	49.1
Restricted stock units (“RSUs”)/performance stock units (“PSUs”)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	24.7	24.1	45.6	45.7
Income tax benefit	(5.2)	(7.4)	(9.6)	(14.1)
Stock-based compensation expense, net of income taxes	19.5	16.7	36.0	31.6
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	15.4	13.7	27.8	25.7
Income tax benefit	(3.3)	(4.4)	(5.9)	(8.2)
Stock-based compensation expense, net of income taxes	$ 12.1	$ 9.3	$ 21.9	$ 17.5