v2.4.0.8

Derivative Instruments (Effect Of Derivative Instruments Not Designated As Hedges On Consolidated Statement Of Operations Summary) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Oct. 26, 2013 | Oct. 27, 2012
Derivative [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | $ 71 | $ 76
Foreign Exchange Contract | Other income (loss), net [Member] |  |
Derivative [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | 43 | 53
Total Return Swaps-Deferred Compensation [Member] | Operating Expenses [Member] |  |
Derivative [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | 17 | 14
Equity Derivatives [Member] | Other income (loss), net [Member] |  |
Derivative [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | $ 11 | $ 9

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or 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 (e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration