Stock Transactions And Stock-Based Compensation (Components of Stock-Based Compensation Program) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2018	Sep. 29, 2017	Sep. 28, 2018	Sep. 29, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	$ 38.2	$ 33.4	$ 111.6	$ 104.8
Income tax benefit	(8.0)	(10.2)	(23.5)	(32.5)
Stock-based compensation expense, net of income taxes	30.2	23.2	88.1	72.3
Restricted stock units (“RSUs”)/performance stock units (“PSUs”)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	24.0	21.9	69.6	67.6
Income tax benefit	(5.0)	(6.6)	(14.6)	(20.7)
Stock-based compensation expense, net of income taxes	19.0	15.3	55.0	46.9
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	14.2	11.5	42.0	37.2
Income tax benefit	(3.0)	(3.6)	(8.9)	(11.8)
Stock-based compensation expense, net of income taxes	$ 11.2	$ 7.9	$ 33.1	$ 25.4