Retirement Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 26, 2015	Jun. 27, 2014	Jun. 26, 2015	Jun. 27, 2014
U.S. Plans
Defined Benefit Plan, Net Periodic Pension Benefit Cost
Service cost	$ 2	$ 2	$ 7	$ 6
Interest cost	12	13	36	38
Expected return on plan assets	(17)	(16)	(51)	(48)
Amortization of net actuarial loss	6	6	19	18
Net periodic pension benefit cost	3	5	11	14
Non-U.S. Plans
Defined Benefit Plan, Net Periodic Pension Benefit Cost
Service cost	12	12	37	35
Interest cost	15	17	46	52
Expected return on plan assets	(19)	(17)	(57)	(50)
Amortization of net actuarial loss	9	6	27	18
Other	(1)	(1)	(4)	(3)
Net periodic pension benefit cost	$ 16	$ 17	49	$ 52
Plan Contributions
Defined benefit plan, contributions by employer			$ 46