Segment and Geographic Data - Net Sales by Segment and Industry End Market (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 26, 2020	Jun. 28, 2019	Jun. 26, 2020	Jun. 28, 2019
Segment and Geographic Data
Net sales	$ 2,548	$ 3,389	$ 8,911	$ 10,148
Transportation Solutions
Segment and Geographic Data
Net sales	1,255	1,968	4,980	5,925
Transportation Solutions | Automotive
Segment and Geographic Data
Net sales	797	1,418	3,567	4,312
Transportation Solutions | Commercial transportation
Segment and Geographic Data
Net sales	233	317	785	938
Transportation Solutions | Sensors
Segment and Geographic Data
Net sales	225	233	628	675
Industrial Solutions
Segment and Geographic Data
Net sales	865	1,005	2,754	2,940
Industrial Solutions | Aerospace, defense, oil, and gas
Segment and Geographic Data
Net sales	265	342	892	958
Industrial Solutions | Industrial equipment
Segment and Geographic Data
Net sales	265	309	808	950
Industrial Solutions | Medical
Segment and Geographic Data
Net sales	161	176	526	520
Industrial Solutions | Energy
Segment and Geographic Data
Net sales	174	178	528	512
Communications Solutions
Segment and Geographic Data
Net sales	428	416	1,177	1,283
Communications Solutions | Data and devices
Segment and Geographic Data
Net sales	276	245	713	753
Communications Solutions | Appliances
Segment and Geographic Data
Net sales	$ 152	$ 171	$ 464	$ 530