Pre-Tax Effect of Derivative Instruments Designated as Cash Flow and Net Investment Hedges (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 28, 2013		Sep. 29, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in OCI - Effective Portion	$ 1,046		$ (180)
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	670	[1]	607	[2]
Gains (Losses) Recognized - Ineffective Portion and Amount Excluded from Effectiveness Testing	(300)		(655)
Cash flow hedges | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in OCI - Effective Portion	891		(175)
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	676	[1]	607	[2]
Gains (Losses) Recognized - Ineffective Portion and Amount Excluded from Effectiveness Testing	(301)		(658)
Cash flow hedges | Interest Rate Contract
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in OCI - Effective Portion	12		0
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	(6)	[1]	0	[2]
Gains (Losses) Recognized - Ineffective Portion and Amount Excluded from Effectiveness Testing	0		0
Net investment hedges | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in OCI - Effective Portion	143		(5)
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	0	[1]	0	[2]
Gains (Losses) Recognized - Ineffective Portion and Amount Excluded from Effectiveness Testing	$ 1		$ 3

[1] Includes gains/(losses) reclassified from AOCI into net income for the effective portion of cash flow hedges, of which $44 million, $632 million and $(6) million were recognized within net sales, cost of sales and other income/(expense), net, respectively, within the Consolidated Statement of Operations for the year ended September 28, 2013

[2] Includes gains/(losses) reclassified from AOCI into income for the effective portion of cash flow hedges, of which $537 million and $70 million were recognized within net sales and cost of sales, respectively, within the Consolidated Statement of Operations for the year ended September 29, 2012.