Restructuring and Other Charges, Net - Actions (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2019	Sep. 28, 2018	Sep. 29, 2017
Restructuring Charges
Charges Incurred	$ 255	$ 140	$ 146
Transportation Solutions
Restructuring Charges
Charges Incurred	144	42	69
Industrial Solutions
Restructuring Charges
Charges Incurred	63	83	73
Communications Solutions
Restructuring Charges
Charges Incurred	48	15	4
Fiscal 2019 Actions
Restructuring Charges
Total Expected Charges	289
Charges Incurred	254
Remaining Expected Charges	35
Fiscal 2019 Actions | Transportation Solutions
Restructuring Charges
Total Expected Charges	160
Charges Incurred	144
Remaining Expected Charges	16
Fiscal 2019 Actions | Industrial Solutions
Restructuring Charges
Total Expected Charges	80
Charges Incurred	66
Remaining Expected Charges	14
Fiscal 2019 Actions | Communications Solutions
Restructuring Charges
Total Expected Charges	49
Charges Incurred	44
Remaining Expected Charges	5
Fiscal 2018 Actions
Restructuring Charges
Charges Incurred		142
Fiscal 2017 Actions
Restructuring Charges
Charges Incurred	(2)	(4)	147
Pre-Fiscal 2017
Restructuring Charges
Charges Incurred	$ 3	$ 2	$ (1)