Net Gains or Losses Recognized on Economic Exposures Associated With Foreign Currency Exchange Contracts (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Apr. 02, 2016	Mar. 28, 2015
Costs and Expenses
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	$ 135	$ (333)	$ 46	$ (548)
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	(163)	310	(84)	515
Net gains (losses)	(28)	(23)	(38)	(33)
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	(15)	19	(5)	31
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	16	(17)	4	(29)
Net gains (losses)	$ 1	$ 2	$ (1)	$ 2