Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Jan. 01, 2021
Deferred tax liabilities:
Global intangible low-taxed income	$ 207.6	$ 219.7
Purchased intangibles	115.8	138.1
Operating lease right-of-use assets	33.5	32.3
Other	12.7	11.3
Total deferred tax liabilities	369.6	401.4
Deferred tax assets:
Depreciation and amortization	474.9	497.1
Operating lease liabilities	36.4	35.0
U.S. tax credit carryforwards	25.8	32.8
Expenses not currently deductible	43.7	32.3
Foreign net operating loss carryforwards	18.0	16.8
Stock-based compensation	13.9	10.6
U.S. net operating loss carryforwards	5.8	7.4
Other	35.7	20.6
Total deferred tax assets	654.2	652.6
Valuation allowance	(45.7)	(41.3)
Total deferred tax assets	608.5	611.3
Total net deferred tax assets	238.9	209.9
Non-current deferred income tax assets	502.0	510.2
Non-current deferred income tax liabilities	$ (263.1)	$ (300.3)