Income Taxes (Schedule Of Reconciliation Of Unrecognized Tax Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2017	Dec. 30, 2016	Jan. 01, 2016
Income Tax Disclosure [Abstract]
Unrecognized tax Benefits, Beginning Balance	$ 72.9	$ 59.0	$ 51.4
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(0.6)
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions		7.5	6.0
Increase related to current year tax positions	12.1	9.9	6.2
Lapse of statute of limitations	(1.6)	(1.4)	(1.5)
Settlement with taxing authorities	(0.4)	(2.1)	(3.1)
Unrecognized tax Benefits, Ending Balance	$ 82.4	$ 72.9	$ 59.0