Components of Net Periodic Pension Benefit (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 27, 2021	Mar. 28, 2020
North America
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 5	$ 7
Expected return on plan assets	(7)	(8)
Net periodic pension benefit	(2)	(1)
United Kingdom
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	1	1
Expected return on plan assets	$ (1)	$ (1)