Gross Fair Value of Derivative Positions (Details) (USD $) In Millions, unless otherwise specified	Jun. 28, 2014	Sep. 28, 2013
Current Assets
Derivatives, Fair Value [Line Items]
Derivatives assets	$ 121	$ 161
Total derivatives assets	9	11
Derivative Asset, Collateral, Obligation to Return Cash, Offset	0	(13)
Current Assets | Netting
Derivatives, Fair Value [Line Items]
Derivatives assets	(112)	(137)
Current Assets | Derivatives Designated as Hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	95	146
Current Assets | Derivatives Designated as Hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivatives assets	0	0
Current Assets | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	26	15
Other Assets
Derivatives, Fair Value [Line Items]
Derivatives assets	241	276
Total derivatives assets	45	85
Derivative Asset, Collateral, Obligation to Return Cash, Offset	(136)	(157)
Other Assets | Netting
Derivatives, Fair Value [Line Items]
Derivatives assets	(60)	(34)
Other Assets | Derivatives Designated as Hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	97	106
Other Assets | Derivatives Designated as Hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivatives assets	144	170
Other Assets | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	0	0
Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Total derivatives assets	(70)	(65)
Derivatives liabilities	(240)	(244)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	25	36
Other Accrued Liabilities | Netting
Derivatives, Fair Value [Line Items]
Derivatives liabilities	145	143
Other Accrued Liabilities | Derivatives Designated as Hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(98)	(68)
Other Accrued Liabilities | Derivatives Designated as Hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(75)	(94)
Other Accrued Liabilities | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(67)	(82)
Other Long-Term Liabilities
Derivatives, Fair Value [Line Items]
Total derivatives assets	(28)	(5)
Derivatives liabilities	(83)	(51)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	28	18
Other Long-Term Liabilities | Netting
Derivatives, Fair Value [Line Items]
Derivatives liabilities	27	28
Other Long-Term Liabilities | Derivatives Designated as Hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(43)	(24)
Other Long-Term Liabilities | Derivatives Designated as Hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivatives liabilities	0	0
Other Long-Term Liabilities | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives liabilities	$ (40)	$ (27)