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Retirement Plans - Additional Information (Detail) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 27, 2020 USD ($)	Sep. 27, 2020 USD ($) Participant
United States Plans
Defined Benefit Plan Disclosure
Contribution to defined benefit pension plans		$ 2.2
United States Plans | Annuity Plan For Participants In The US Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure
Number of employees involved in the annutiy plan | Participant		115
Increase decrease in accrued pension benefit obligations		$ 24.4
Increase decrease in pension assets		24.4
Pension benefit obligation acturial gain loss	$ 2.2	2.2
Defined benefit obligation increase decrease for remeasurement due to settlement	$ 0.5	0.5
U.S. Supplemental Executive Defined Benefit Pension Plan
Defined Benefit Plan Disclosure
Contribution to defined benefit pension plans		$ 0.7

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