Changes in Pension and Other Postretirement Benefit Obligations, Plan Assets and Funded Status (Detail) - USD ($)	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Dec. 25, 2021
Defined Benefit Plan Disclosure [Line Items]
Net asset (liability) recognized at end of period	$ 0
Pension Benefits | North America
Defined Benefit Plan Disclosure [Line Items]
Obligation at beginning of period	627,000,000	$ 830,000,000
Interest cost	32,000,000	21,000,000	$ 20,000,000
Assumption changes	3,000,000	(144,000,000)
Actuarial gain	(2,000,000)	(9,000,000)
Benefits paid	(68,000,000)	(71,000,000)
Obligation at end of period	592,000,000	627,000,000	830,000,000
Fair value of plan assets at beginning of period	625,000,000	836,000,000
Actual return on plan assets	48,000,000	(142,000,000)
Employer contribution	2,000,000	2,000,000
Benefits paid	(68,000,000)	(71,000,000)
Fair value of plan assets at end of period	607,000,000	625,000,000	836,000,000
Net asset (liability) recognized at end of period	15,000,000	(2,000,000)
Other Benefits | North America
Defined Benefit Plan Disclosure [Line Items]
Obligation at beginning of period	9,000,000	13,000,000
Assumption changes		(3,000,000)
Benefits paid	(1,000,000)	(1,000,000)
Obligation at end of period	8,000,000	9,000,000	$ 13,000,000
Employer contribution	1,000,000	1,000,000
Benefits paid	(1,000,000)	(1,000,000)
Net asset (liability) recognized at end of period	$ (8,000,000)	$ (9,000,000)