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Fair Value of Plan Assets (Detail) - UNITED KINGDOM - USD ($) $ in Millions	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 146	$ 167	$ 189
Cash
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2
Insurance Contract
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	146	165
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2
Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	146	165
Significant Unobservable Inputs (Level 3) | Insurance Contract
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 146	$ 165

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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.

+ References

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