Goodwill and Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 27, 2025	Dec. 27, 2024
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite and Indefinite-Lived	$ 375.0	$ 375.0
Accumulated Amortization	(204.4)	(190.1)
Total	161.6
Carrying Value, Finite And Indefinite-Lived	170.6	184.9
UCT Tradename
Finite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets acquired	9.0
Customer relationships
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	207.2	207.2
Accumulated Amortization	(126.8)	(117.4)
Total	$ 80.4	89.8
Customer relationships | Minimum
Finite Lived Intangible Assets [Line Items]
Useful Life (In years)	6 years
Customer relationships | Maximum
Finite Lived Intangible Assets [Line Items]
Useful Life (In years)	10 years
Recipes
Finite Lived Intangible Assets [Line Items]
Useful Life (In years)	20 years
Gross Carrying Amount	$ 73.2	73.2
Accumulated Amortization	(25.0)	(23.2)
Total	48.2	50.0
Intellectual property/know-how
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	48.9	48.9
Accumulated Amortization	(25.0)	(22.8)
Total	$ 23.9	26.1
Intellectual property/know-how | Minimum
Finite Lived Intangible Assets [Line Items]
Useful Life (In years)	7 years
Intellectual property/know-how | Maximum
Finite Lived Intangible Assets [Line Items]
Useful Life (In years)	15 years
Tradename
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 32.5	32.5
Accumulated Amortization	(23.2)	(22.9)
Total	$ 9.3	9.6
Tradename | Minimum
Finite Lived Intangible Assets [Line Items]
Useful Life (In years)	4 years
Tradename | Maximum
Finite Lived Intangible Assets [Line Items]
Useful Life (In years)	6 years
Standard operating procedures
Finite Lived Intangible Assets [Line Items]
Useful Life (In years)	20 years
Gross Carrying Amount	$ 8.6	8.6
Accumulated Amortization	(2.9)	(2.7)
Total	$ 5.7	5.9
Developed technology
Finite Lived Intangible Assets [Line Items]
Useful Life (In years)	5 years
Gross Carrying Amount	$ 4.6	4.6
Accumulated Amortization	(1.5)	(1.1)
Total	$ 3.1	$ 3.5