Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Jan. 01, 2021	Jan. 03, 2020
Deferred tax liabilities:
Global intangible low-taxed income	$ 219.7	$ 233.7
Purchased intangibles	138.1	158.7
Operating lease right-of-use assets	32.3	35.3
Other	11.3	12.8
Total deferred tax liabilities	401.4	440.5
Deferred tax assets:
Depreciation and amortization	497.1	471.5
Operating lease liabilities	35.0	36.0
U.S. tax credit carryforwards	32.8	34.2
Expenses not currently deductible	32.3	28.0
Foreign net operating loss carryforwards	16.8	16.2
Stock-based compensation	10.6	13.3
U.S. net operating loss carryforwards	7.4	9.8
Other	20.6	14.1
Total deferred tax assets	652.6	623.1
Valuation allowance	(41.3)	(25.3)
Total deferred tax assets	611.3	597.8
Total net deferred tax assets	209.9	157.3
Non-current deferred income tax assets	510.2	475.5
Non-current deferred income tax liabilities	$ (300.3)	$ (318.2)