Derivative Instruments - Gross Fair Value of Derivative Positions (Detail) (USD $) In Millions, unless otherwise specified	Sep. 28, 2013		Sep. 29, 2012
Current Assets
Derivatives, Fair Value [Line Items]
Derivatives assets	$ 161		$ 343
Total derivatives assets	24	[1]	226	[1]
Current Assets | Netting
Derivatives, Fair Value [Line Items]
Derivatives assets	(137)		(117)
Current Assets | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	146		84
Current Assets | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivatives assets	0		1
Current Assets | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	15		258
Other Assets
Derivatives, Fair Value [Line Items]
Derivatives assets	276		286
Total derivatives assets	242	[1]	250	[1]
Other Assets | Netting
Derivatives, Fair Value [Line Items]
Derivatives assets	(34)		(36)
Other Assets | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	106		30
Other Assets | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivatives assets	170		238
Other Assets | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	0		18
Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(244)		(185)
Total derivatives liabilities	(101)	[1]	(68)	[1]
Other Accrued Liabilities | Netting
Derivatives, Fair Value [Line Items]
Derivatives liabilities	143		117
Other Accrued Liabilities | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(68)		(94)
Other Accrued Liabilities | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(94)		0
Other Accrued Liabilities | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(82)		(91)
Other Long-Term Liabilities
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(51)		(50)
Total derivatives liabilities	(23)	[1]	(14)	[1]
Other Long-Term Liabilities | Netting
Derivatives, Fair Value [Line Items]
Derivatives liabilities	28		36
Other Long-Term Liabilities | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(24)		(50)
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	$ (27)		$ 0

[1] Refer to Note 15 for further information on derivative fair values and counterparty netting.