Pre-Tax Effect of Derivative Instruments Designated as Cash Flow and Net Investment Hedges (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 29, 2012		Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	$ (159)	[1]	$ 238	[2]
Cash flow hedges | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	(159)	[1]	238	[2]
Cash flow hedges | Net sales | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	(9)		187
Cash flow hedges | Cost of Sales | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	(150)		51
Net investment hedges | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	$ 0	[1]	$ 0	[2]

[1] Includes gains/(losses) reclassified from AOCI into net income for the effective portion of cash flow hedges, of which $(9) million and $(150) million were recognized within net sales and cost of sales, respectively, within the Condensed Consolidated Statement of Operations for the three months ended December 29, 2012. There were no amounts reclassified from AOCI into net income for the effective portion of net investment hedges for the three months ended December 29, 2012.

[2] Includes gains/(losses) reclassified from AOCI into net income for the effective portion of cash flow hedges, of which $187 million and $51 million were recognized within net sales and cost of sales, respectively, within the Condensed Consolidated Statement of Operations for the three months ended December 31, 2011. There were no amounts reclassified from AOCI into net income for the effective portion of net investment hedges for the three months ended December 31, 2011.