Allocation of Plan Assets (Detail) - United Kingdom	Dec. 30, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	100.00%	100.00%
Cash
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	1.00%
Insurance Contract
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	99.00%
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets		5.00%
Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets		95.00%