Goodwill and Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 27, 2026	Dec. 26, 2025
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite and Indefinite-Lived	$ 375.0	$ 375.0
Accumulated Amortization	(225.1)	(218.2)
Total	140.9
Carrying Value	149.9	156.8
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	(140.0)	(135.6)
Total	$ 67.2	71.6
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	(27.8)	(26.8)
Total	45.4	46.4
Intellectual property/know-how
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	48.9	48.9
Accumulated Amortization	(28.3)	(27.2)
Total	$ 20.6	21.7
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	(23.5)	(23.4)
Total	$ 9.0	9.1
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	(3.3)	(3.2)
Total	$ 5.3	5.4
Developed technology
Finite Lived Intangible Assets [Line Items]
Useful Life (In years)	5 years
Gross Carrying Amount	$ 4.6	4.6
Accumulated Amortization	(2.2)	(2.0)
Total	$ 2.4	$ 2.6