Components of Net Periodic Pension Expense (Benefit) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
North America
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 2		$ 4
Interest cost	$ 7	9	$ 14	18
Expected return on plan assets	(8)	(11)	(16)	(21)
Net periodic pension expense (benefit)	(1)		(2)	1
United Kingdom
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	1	1	2	3
Expected return on plan assets	$ (1)	(2)	$ (2)	(4)
Net periodic pension expense (benefit)		$ (1)		$ (1)