Retirement Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Non-U.S. Plans
Defined Benefit Plan, Net Periodic Pension Benefit Cost
Service cost	$ 12	$ 12	$ 36	$ 35
Interest cost	11	10	32	31
Expected return on plan assets	(16)	(18)	(48)	(52)
Amortization of net actuarial loss	6	7	18	18
Amortization of prior service credit	(2)	(2)	(6)	(5)
Net periodic pension benefit cost	11	9	32	27
Defined Benefit Plan Contributions
Defined benefit plan, contributions by employer			29
U.S. Plans
Defined Benefit Plan, Net Periodic Pension Benefit Cost
Service cost	4	3	10	10
Interest cost	11	11	34	33
Expected return on plan assets	(14)	(15)	(43)	(45)
Amortization of net actuarial loss	4	6	13	17
Net periodic pension benefit cost	$ 5	$ 5	$ 14	$ 15