Employee Stock Benefit Plans (Schedule Of Options Outstanding And Expected To Vest) (Details) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jan. 03, 2020 USD ($) $ / shares shares
Employee Benefit and Share-based Payment Arrangement, Noncash Expense [Abstract]
Number Of Shares, Options outstanding | shares	2.4
Options, Grants in Period | shares	0.1
Option exercised | shares	(1.4)
Cancelled and forfeited, number of shares | shares	0.0
Number Of Shares, Options outstanding | shares	1.1
Options exercisable | shares	0.9
Weighted-Average Exercise Price per Share, Options outstanding | $ / shares	$ 28.26
Options granted, Weighted Average Exercise Price per Share | $ / shares	40.57
Options, Exercises in Period, Weighted Average Exercise Price | $ / shares	27.75
Cancelled and forfeited, Weighted Average Exercise Price per Share | $ / shares	23.53
Weighted-Average Exercise Price per Share, Options outstanding | $ / shares	29.96
Options exercisable, Weighted Average Exercise Price | $ / shares	$ 28.61
Weighted-Average Remaining Contractual Term (in years), Options outstanding and expected to vest	2 years
Weighted-Average Remaining Contractual Term (in years), Options exercisable	1 year 2 months 12 days
Aggregate Intrinsic Value, Options outstanding and expected to vest | $	$ 12.0
Aggregate Intrinsic Value, Options exercisable | $	$ 11.4