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Derivative Instruments (Effect Of Derivative Instruments Designated As Fair Value Hedges And Underlying Hedged Items On Consolidated Statements Of Operations) (Detail) (Derivatives Designated As Fair Value Hedging Instruments, USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Jul. 28, 2012 | Jul. 30, 2011 | Jul. 31, 2010
Hedge Underlying Gain Loss [Line Items] |  |  |
Gains (losses) on derivative instruments | $ 74 | $ 74 | $ 75
Gains (losses) related to hedged items | (76) | (77) | (80)
Equity Derivatives | Other income, net |  |  |
Hedge Underlying Gain Loss [Line Items] |  |  |
Gains (losses) on derivative instruments | (4) |  | 3
Gains (losses) related to hedged items | 4 |  | (3)
Interest Rate Derivatives | Interest Expense |  |  |
Hedge Underlying Gain Loss [Line Items] |  |  |
Gains (losses) on derivative instruments | 78 | 74 | 72
Gains (losses) related to hedged items | $ (80) | $ (77) | $ (77)

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- Definition The amount recognized in earnings related to the change in fair value during the period of the hedged item in a fair value hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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- Definition Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959 + Details
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