Other Changes In Plan Assets and Benefit Obligations Recognized In Other Comprehensive Loss (Income) (Detail) - North America - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Dec. 25, 2021
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated other comprehensive loss (income) at beginning of year	$ (31)	$ (46)	$ (21)
Net loss (gain)	(13)	15	(25)
Amortization of net losses	6
Accumulated other comprehensive income at end of year	(38)	(31)	(46)
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated other comprehensive loss (income) at beginning of year	(2)		1
Net loss (gain)	(1)	(2)	$ (1)
Accumulated other comprehensive income at end of year	$ (3)	$ (2)