Segment Information and Geographic Data - Financial Information by Segment (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net sales:
Total Net sales	$ 1,026	$ 935	$ 896	$ 865	$ 942	$ 904	$ 879	$ 849	$ 3,722	$ 3,574	$ 3,650
Operating income:
Total Operating income									322	80	37
Operating segments
Net sales:
Total Net sales									3,725	3,584	3,666
Operating income:
Total Operating income									575	526	494
Corporate, eliminations
Net sales:
Total Net sales									(3)	(10)	(16)
Operating income:
Total Operating income									(253)	(446)	(457)
AIT
Net sales:
Total Net sales									1,311	1,247	1,286
Operating income:
Total Operating income									260	240	258
EVM
Net sales:
Total Net sales									2,414	2,337	2,380
Operating income:
Total Operating income									$ 315	$ 286	$ 236