Employee Stock Benefit Plans (Schedule Of Options Outstanding And Expected To Vest) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 29, 2017	Dec. 30, 2016
Employee Benefits and Share-based Compensation, Noncash [Abstract]
Number Of Shares, Options outstanding	4.4	7.6
Option exercised	(3.2)
Cancelled and Forfeited	0.0
Options exercisable	4.1
Weighted-Average Exercise Price per Share, Options outstanding	$ 26.12	$ 24.60
Options, Exercises in Period, Weighted Average Exercise Price	22.52
Options, Canceled and Forfeited in Period, Weighted Average Exercise Price	25.97
Options exercisable, Weighted Average Exercise Price	$ 26.07
Weighted-Average Remaining Contractual Term (in years), Options outstanding and expected to vest	2 years 2 months 1 day
Weighted-Average Remaining Contractual Term (in years), Options exercisable	2 years 15 days
Aggregate Intrinsic Value, Options outstanding and expected to vest	$ 63.8
Aggregate Intrinsic Value, Options exercisable	$ 60.1