Segment Information & Geographic Data (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020 USD ($)	Jun. 29, 2019 USD ($)	Jun. 27, 2020 USD ($) segment	Jun. 29, 2019 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment			2
Segment Reporting Information [Line Items]
Total Net sales	$ 956	$ 1,097	$ 2,008	$ 2,163
Total Operating income	119	160	270	319
Operating Segments
Segment Reporting Information [Line Items]
Total Operating income	141	197	318	390
Corporate, eliminations
Segment Reporting Information [Line Items]
Total Operating income	(22)	(37)	(48)	(71)
AIT
Segment Reporting Information [Line Items]
Total Net sales	275	370	646	727
AIT | Operating Segments
Segment Reporting Information [Line Items]
Total Operating income	48	84	137	176
EVM
Segment Reporting Information [Line Items]
Total Net sales	681	727	1,362	1,436
EVM | Operating Segments
Segment Reporting Information [Line Items]
Total Operating income	$ 93	$ 113	$ 181	$ 214