Certain Balance Sheet Components (Components Of Accumulated Other Comprehensive Loss, Net Of Related Tax) (Details) - USD ($) $ in Millions	Dec. 29, 2023	Dec. 30, 2022
Balance Sheet Related Disclosures [Abstract]
Accumulated foreign currency translation adjustments	$ (158.0)	$ (241.6)
Gain on cash flow hedge	4.7	5.4
Net unrealized actuarial gains	1.2	1.3
Total accumulated other comprehensive loss	$ (152.1)	$ (234.9)

Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant