Business Combinations - Additional Information (Detail) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
	Apr. 15, 2019	Aug. 31, 2020	Dec. 25, 2020	Dec. 27, 2019	Dec. 28, 2018
Business Acquisition [Line Items]
Revenues			$ 1,398.6	$ 1,066.2	$ 1,096.5
Operating Income			121.4	29.9	60.7
Amortization of intangible assets			19.8	20.1	$ 9.6
Dynamic Manufacturing Solutions [Member]
Business Acquisition [Line Items]
Date of acquisition	Apr. 15, 2019
Business acquisition potential cash earn-out payments	$ 12.5
Business acquisition fair value of potential earn-out payments	1.5
Total purchase consideration	31.4
Cash payment for acquisition	$ 29.9
Earn-out payments, fair market value		$ 12.5
Increase in liability recorded as other expense			$ 3.0	8.0
Revenues				35.2
Operating Income				4.9
Amortization of intangible assets				0.8
Acquisition related costs				1.2
contingent earn-out expense				$ 8.0
Dynamic Manufacturing Solutions [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Total intangible assets, useful life	6 years