Income Taxes (Schedule Of Provision For Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2021	Jan. 03, 2020	Dec. 28, 2018
U.S. Federal:
Current	$ (5.8)	$ (3.8)	$ (19.7)
Deferred	(16.3)	252.3	(25.8)
US federal, income tax provision	(22.1)	248.5	(45.5)
U.S. State:
Current	0.8	5.1	5.0
Deferred	7.1	(0.7)	(3.6)
US state, income tax provision	7.9	4.4	1.4
Foreign:
Current	62.2	49.2	57.0
Deferred	(43.6)	(471.8)	(18.2)
Foreign, income tax provision	18.6	(422.6)	38.8
Income tax provision (benefit)	$ 4.4	$ (169.7)	$ (5.3)
Effective tax rate	1.10%	(49.20%)	(1.90%)