Gross Fair Value of Derivative Positions (Detail) (USD $) In Millions, unless otherwise specified	Sep. 29, 2012		Oct. 01, 2011
Current Assets
Derivatives, Fair Value [Line Items]
Derivatives assets	$ 343		$ 237
Total derivatives assets	226	[1]	126	[1]
Current Assets | Netting
Derivatives, Fair Value [Line Items]
Derivatives assets	(117)		(111)
Current Assets | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	84		133
Current Assets | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivatives assets	1		1
Current Assets | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	258		103
Other Assets
Derivatives, Fair Value [Line Items]
Derivatives assets	286		475
Total derivatives assets	250	[1]	419	[1]
Other Assets | Netting
Derivatives, Fair Value [Line Items]
Derivatives assets	(36)		(56)
Other Assets | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	30		33
Other Assets | Derivatives designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivatives assets	238		213
Other Assets | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives assets	18		229
Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(185)		(151)
Total derivatives liabilities	(68)	[1]	(40)	[1]
Other Accrued Liabilities | Netting
Derivatives, Fair Value [Line Items]
Derivatives liabilities	117		111
Other Accrued Liabilities | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(94)		(100)
Other Accrued Liabilities | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(91)		(51)
Other Long-Term Liabilities
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(50)		(129)
Total derivatives liabilities	(14)	[1]	(73)	[1]
Other Long-Term Liabilities | Netting
Derivatives, Fair Value [Line Items]
Derivatives liabilities	36		56
Other Long-Term Liabilities | Derivatives designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives liabilities	(50)		(90)
Other Long-Term Liabilities | Derivatives not designated as hedges | Foreign exchange
Derivatives, Fair Value [Line Items]
Derivatives liabilities			(21)
Other Long-Term Liabilities | Derivatives not designated as hedges | Interest rate
Derivatives, Fair Value [Line Items]
Derivatives liabilities			$ (18)

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