Retirement Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 25, 2016	Mar. 27, 2015	Mar. 25, 2016	Mar. 27, 2015
U.S. Plans
Defined Benefit Plan, Net Periodic Pension Benefit Cost
Service cost	$ 2	$ 3	$ 4	$ 5
Interest cost	12	12	25	24
Expected return on plan assets	(14)	(17)	(29)	(34)
Amortization of net actuarial loss	10	6	20	13
Net periodic pension benefit cost	10	4	20	8
Non-U.S. Plans
Defined Benefit Plan, Net Periodic Pension Benefit Cost
Service cost	12	13	24	25
Interest cost	14	16	27	31
Expected return on plan assets	(17)	(19)	(35)	(38)
Amortization of net actuarial loss	9	9	18	18
Amortization of prior service credit	(2)	(2)	(3)	(3)
Net periodic pension benefit cost	$ 16	$ 17	31	$ 33
Defined Benefit Plan Contributions
Defined Benefit Plan, Contributions by Employer			$ 40