Costs Associated with Exit and Restructuring Activities - Rollforward of Exit and Restructuring Accruals (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	$ 11	$ 13	$ 10	$ 15
Charged to earnings, net	1	5	5	10
Cash paid	(5)	(5)	(8)	(12)
Balance at the end of the period	$ 7	$ 13	$ 7	$ 13