Net Gains or Losses Recognized on Economic Exposures Associated With Foreign Currency Exchange Contracts (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Costs and Expenses
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	$ (1)	$ (15)	$ 3	$ (122)
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	(13)	(3)	(57)	91
Net gains (losses)	(14)	(18)	(54)	(31)
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) on foreign currency denominated assets and liabilities	(10)	39	8	192
Net gains (losses) on foreign exchange risk management contracts not designated as hedges	10	(36)	(11)	(187)
Net gains (losses)	$ 0	$ 3	$ (3)	$ 5