Net Gains or Losses Recognized on Economic Exposures Associated With Foreign Currency Exchange Contracts (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 02, 2016	Dec. 27, 2014
Costs and Expenses
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	$ (89)	$ (215)
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	79	205
Net gains (losses)	(10)	(10)
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	10	12
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	(12)	(12)
Net gains (losses)	$ (2)	$ 0