Pre-Tax Effect of Derivative Instruments Designated as Cash Flow and Net Investment Hedges (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Dec. 28, 2013	Dec. 29, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in OCI - Effective Portion	$ 309	$ 241
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	(78)	(159)
Gains (Losses) Recognized - Ineffective Portion and Amount Excluded from Effectiveness Testing	(2)	9
Cash flow hedges \| Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in OCI - Effective Portion	264	205
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	(74)	(159)
Gains (Losses) Recognized - Ineffective Portion and Amount Excluded from Effectiveness Testing	(3)	9
Cash flow hedges \| Interest rate contract
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) Recognized in OCI - Effective Portion	21	0
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	(4)	0
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	24	36
Gains (Losses) Reclassified from AOCI into Net Income - Effective Portion	0	0
Gains (Losses) Recognized - Ineffective Portion and Amount Excluded from Effectiveness Testing	$ 1	$ 0

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4D

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624177-113959

+ Details

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- Definition

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 25

-Section 50

-Paragraph 1

-Subparagraph (a)(1),(2)

-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

+ Details

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