Segment Information & Geographic Data - Financial Information by Segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Segment Reporting Information [Line Items]
Total Net sales	$ 1,130	$ 1,092	$ 3,293	$ 3,081
Total Operating income	185	162	504	431
AIT
Segment Reporting Information [Line Items]
Total Net sales	373	353	1,100	1,056
Operating Segments
Segment Reporting Information [Line Items]
Total Operating income	226	198	616	520
Operating Segments | AIT
Segment Reporting Information [Line Items]
Total Net sales	373	353	1,100	1,056
Total Operating income	93	81	269	241
Operating Segments | EVM
Segment Reporting Information [Line Items]
Total Net sales	757	739	2,193	2,025
Total Operating income	133	117	347	279
Corporate, eliminations
Segment Reporting Information [Line Items]
Total Operating income	$ (41)	$ (36)	$ (112)	$ (89)