Retirement Plans - Components of Net Periodic Benefit Costs (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Retirement Benefits [Abstract]
Service cost	$ 1	$ 1	$ 2	$ 2
Interest cost	10	10	28	28
Expected return on plan assets	(13)	(13)	(37)	(39)
Amortization of net loss	1	0	3	2
Settlements	3	0	3	0
Net periodic pension benefit costs (credits)	$ 2	$ (2)	$ (1)	$ (7)