Stock Transactions And Stock-Based Compensation (Components of Stock-Based Compensation Program) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2019	Sep. 28, 2018	Sep. 27, 2019	Sep. 28, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	$ 44.6	$ 38.2	$ 130.0	$ 111.6
Income tax benefit	(9.2)	(8.0)	(27.1)	(23.5)
Stock-based compensation expense, net of income taxes	35.4	30.2	102.9	88.1
Restricted stock units (“RSUs”)/performance stock units (“PSUs”)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	27.6	24.0	79.8	69.6
Income tax benefit	(5.7)	(5.0)	(16.6)	(14.6)
Stock-based compensation expense, net of income taxes	21.9	19.0	63.2	55.0
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	17.0	14.2	50.2	42.0
Income tax benefit	(3.5)	(3.0)	(10.5)	(8.9)
Stock-based compensation expense, net of income taxes	$ 13.5	$ 11.2	$ 39.7	$ 33.1