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Pension Plans - Schedule of Target Allocation and Weighted-Average Asset Allocation by Asset Category and Fair Value of Plan Assets (Detail) - United States - USD ($) $ in Millions	Dec. 28, 2024	Dec. 30, 2023
Defined Benefit Plan Disclosure [Line Items]
Target allocation	100.00%
Actual weighted-average asset allocation	100.00%	100.00%
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Fair value of plan assets	$ 1,126.3	$ 1,143.7
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation	49.00%
Actual weighted-average asset allocation	46.00%	46.00%
Debt securities and cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Target allocation	46.00%
Actual weighted-average asset allocation	45.00%	46.00%
Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Target allocation	5.00%
Actual weighted-average asset allocation	9.00%	8.00%

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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