Stock Transactions And Stock-Based Compensation (Components Of Stock-Based Compensation Program) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 26, 2014	Sep. 27, 2013	Sep. 26, 2014	Sep. 27, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	$ 33.9	$ 29.6	$ 88.9	$ 85.7
Income tax benefit	(10.3)	(8.9)	(26.2)	(26.0)
Stock-based compensation expense, net of income taxes	23.6	20.7	62.7	59.7
RSUs:
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	21.2	17.6	55.0	49.9
Income tax benefit	(6.4)	(5.2)	(16.0)	(15.0)
Stock-based compensation expense, net of income taxes	14.8	12.4	39.0	34.9
Stock options:
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	12.7	12.0	33.9	35.8
Income tax benefit	(3.9)	(3.7)	(10.2)	(11.0)
Stock-based compensation expense, net of income taxes	$ 8.8	$ 8.3	$ 23.7	$ 24.8