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Schedule Of Reconciliation Of Changes In Projected Benefit Obligation, Fair Value Of Plan Assets And Funded Status Of Plan (Detail) - USD ($)
 12 Months Ended
Dec. 28, 2024
Dec. 30, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]      
Net amount recognized   $ 0  
United Kingdom      
Defined Benefit Plan Disclosure [Line Items]      
Obligation at beginning of period $ 167,000,000 141,000,000  
Interest cost 7,000,000 8,000,000 $ 4,000,000
Benefits paid (7,000,000) (7,000,000)  
Actuarial loss/(gain) (18,000,000) 17,000,000  
Currency translation (2,000,000) 8,000,000  
Obligation at end of period 147,000,000 167,000,000 141,000,000
Fair value of plan assets at beginning of period 167,000,000 189,000,000  
Actual return on plan assets (13,000,000) (24,000,000)  
Company contributions 1,000,000 0  
Benefits paid (7,000,000) (7,000,000)  
Currency translation (2,000,000) 9,000,000  
Fair value of plan assets at end of period 146,000,000 $ 167,000,000 $ 189,000,000
Net amount recognized $ (1,000,000)