v2.4.0.8

Investments (Maturities Of Fixed Income Securities) (Detail) (USD $) In Millions, unless otherwise specified	Oct. 26, 2013
Schedule of Investments [Line Items]
Fixed Income Securities, Amortized Cost	$ 40,334
Fixed Income Securities, Fair Value	40,433
Less than 1 year [Member]
Schedule of Investments [Line Items]
Fixed Income Securities, Amortized Cost	15,286
Fixed Income Securities, Fair Value	15,297
Fixed Income Securities Matures Between One And Two Years [Member]
Schedule of Investments [Line Items]
Fixed Income Securities, Amortized Cost	12,310
Fixed Income Securities, Fair Value	12,346
Fixed Income Securities Matures Between Two And Five Years [Member]
Schedule of Investments [Line Items]
Fixed Income Securities, Amortized Cost	12,160
Fixed Income Securities, Fair Value	12,204
Fixed Income Securities Matures Beyond Five Years [Member]
Schedule of Investments [Line Items]
Fixed Income Securities, Amortized Cost	578
Fixed Income Securities, Fair Value	$ 586

X

- Definition

Amount of available-for-sale debt securities at cost, net of adjustments, that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the cost over several maturity groupings. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563

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X

- Definition

Amount of available-for-sale debt securities at fair value that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the fair value over several maturity groupings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (aa)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563

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