Net Gains or Losses Recognized on Economic Exposures Associated With Foreign Currency Exchange Contracts (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016	Jun. 27, 2015
Costs and Expenses
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	$ (75)	$ 52	$ (29)	$ (496)
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	52	(41)	(32)	474
Net gains (losses)	(23)	11	(61)	(22)
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	(2)	(4)	(7)	27
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	1	4	5	(25)
Net gains (losses)	$ (1)	$ 0	$ (2)	$ 2