Income Taxes - Movement in Deferred Tax Valuation Allowance (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 28, 2025	Dec. 29, 2024
Deferred Tax Asset, Valuation Allowance [Roll Forward]
Valuation allowance, beginning	$ (412.5)	$ (432.0)
Provisions/charges to income	(11.6)	19.8
Amounts charged to other accounts	0.2	(2.5)
Foreign currency impact	(2.5)	2.2
Valuation allowance, ending	$ (426.4)	$ (412.5)

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

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