Stock Transactions And Stock-Based Compensation (Components of Stock-Based Compensation Program) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	$ 46.2	$ 40.1	$ 85.4	$ 73.4
Income tax benefit	(9.6)	(8.5)	(17.9)	(15.5)
Stock-based compensation expense, net of income taxes	36.6	31.6	67.5	57.9
Restricted stock units (“RSUs”)/performance stock units (“PSUs”)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	27.9	24.7	52.2	45.6
Income tax benefit	(5.8)	(5.2)	(10.9)	(9.6)
Stock-based compensation expense, net of income taxes	22.1	19.5	41.3	36.0
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	18.3	15.4	33.2	27.8
Income tax benefit	(3.8)	(3.3)	(7.0)	(5.9)
Stock-based compensation expense, net of income taxes	$ 14.5	$ 12.1	$ 26.2	$ 21.9