Goodwill and Intangible Assets - Purchased Intangible Assets (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Dec. 30, 2022
Finite Lived Intangible Assets [Line Items]
Definite lives intangible assets, gross carrying amount	$ 324.0	$ 324.0
Definite lives intangible assets, accumulated amortization	(147.5)	(136.1)
Total	167.5
Intangible Assets, net carrying value	176.5	187.9
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Definite lives intangible assets, gross carrying amount	172.0	172.0
Definite lives intangible assets, accumulated amortization	(89.3)	(81.8)
Total	$ 82.7	90.2
Customer Relationships [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Total purchased intangible assets, useful life	6 years
Customer Relationships [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Total purchased intangible assets, useful life	10 years
Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Definite lives intangible assets, gross carrying amount	$ 32.5	32.5
Definite lives intangible assets, accumulated amortization	(21.5)	(20.9)
Total	$ 11.0	11.6
Trade Names [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Total purchased intangible assets, useful life	4 years
Trade Names [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Total purchased intangible assets, useful life	6 years
IP Know-how [Member]
Finite Lived Intangible Assets [Line Items]
Definite lives intangible assets, gross carrying amount	$ 37.7	37.7
Definite lives intangible assets, accumulated amortization	(16.9)	(15.7)
Total	$ 20.8	22.0
IP Know-how [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Total purchased intangible assets, useful life	7 years
IP Know-how [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Total purchased intangible assets, useful life	15 years
Recipes [Member]
Finite Lived Intangible Assets [Line Items]
Total purchased intangible assets, useful life	20 years
Definite lives intangible assets, gross carrying amount	$ 73.2	73.2
Definite lives intangible assets, accumulated amortization	(17.7)	(15.8)
Total	$ 55.5	57.4
Standard Operating Procedures [Member]
Finite Lived Intangible Assets [Line Items]
Total purchased intangible assets, useful life	20 years
Definite lives intangible assets, gross carrying amount	$ 8.6	8.6
Definite lives intangible assets, accumulated amortization	(2.1)	(1.9)
Total	$ 6.5	$ 6.7