Segment and Geographic Data - Net Sales by Segment and Industry End Market (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 25, 2020	Dec. 27, 2019
Segment and Geographic Data
Net sales	$ 3,522	$ 3,168
Transportation Solutions
Segment and Geographic Data
Net sales	2,224	1,868
Transportation Solutions | Automotive
Segment and Geographic Data
Net sales	1,629	1,405
Transportation Solutions | Commercial transportation
Segment and Geographic Data
Net sales	331	258
Transportation Solutions | Sensors
Segment and Geographic Data
Net sales	264	205
Industrial Solutions
Segment and Geographic Data
Net sales	873	927
Industrial Solutions | Aerospace, defense, oil, and gas
Segment and Geographic Data
Net sales	250	309
Industrial Solutions | Industrial equipment
Segment and Geographic Data
Net sales	295	263
Industrial Solutions | Medical
Segment and Geographic Data
Net sales	156	179
Industrial Solutions | Energy
Segment and Geographic Data
Net sales	172	176
Communications Solutions
Segment and Geographic Data
Net sales	425	373
Communications Solutions | Data and devices
Segment and Geographic Data
Net sales	234	219
Communications Solutions | Appliances
Segment and Geographic Data
Net sales	$ 191	$ 154