Certain Balance Sheet Components (Components Of Property And Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2025	Dec. 29, 2023	Dec. 30, 2022
Property, Plant and Equipment [Line Items]
Gross Carrying Amount	$ 527.6	$ 553.0
Accumulated Depreciation	(339.2)	(350.5)
Net  Carrying Amount	188.4	202.5
Depreciation expense	33.0	38.3	$ 40.2
Land, building, furniture, and leasehold improvements
Property, Plant and Equipment [Line Items]
Gross Carrying Amount	238.9	237.4
Accumulated Depreciation	(98.8)	(94.5)
Net  Carrying Amount	140.1	142.9
Machinery and equipment
Property, Plant and Equipment [Line Items]
Gross Carrying Amount	147.0	170.0
Accumulated Depreciation	(121.8)	(138.3)
Net  Carrying Amount	25.2	31.7
Software
Property, Plant and Equipment [Line Items]
Gross Carrying Amount	128.4	131.6
Accumulated Depreciation	(118.6)	(117.7)
Net  Carrying Amount	9.8	13.9
Construction in progress
Property, Plant and Equipment [Line Items]
Gross Carrying Amount	13.3	14.0
Accumulated Depreciation	0.0	0.0
Net  Carrying Amount	$ 13.3	$ 14.0