v2.4.0.6

Derivative Instruments (Derivatives Recorded At Fair Value) (Detail) (USD $) In Millions, unless otherwise specified | Jul. 28, 2012 | Jul. 30, 2011
--- | --- | ---
Derivative [Line Items] |  |
Derivative assets | $ 264 | $ 222
Derivative liabilities | 42 | 24
Derivatives Designated As Hedging Instrument |  |
Derivative [Line Items] |  |
Derivative assets | 247 | 213
Derivative liabilities | 30 | 12
Derivatives Not Designated As Hedging Instruments |  |
Derivative [Line Items] |  |
Derivative assets | 17 | 9
Derivative liabilities | 12 | 12
Foreign Currency Derivatives | Derivatives Designated As Hedging Instrument | Other current assets |  |
Derivative [Line Items] |  |
Derivative assets | 24 | 67
Foreign Currency Derivatives | Derivatives Designated As Hedging Instrument | Other Current Liabilities |  |
Derivative [Line Items] |  |
Derivative liabilities | 26 | 12
Foreign Currency Derivatives | Derivatives Not Designated As Hedging Instruments | Other current assets |  |
Derivative [Line Items] |  |
Derivative assets | 16 | 7
Foreign Currency Derivatives | Derivatives Not Designated As Hedging Instruments | Other Current Liabilities |  |
Derivative [Line Items] |  |
Derivative liabilities | 12 | 12
Interest Rate Derivatives | Derivatives Designated As Hedging Instrument | Other assets |  |
Derivative [Line Items] |  |
Derivative assets | 223 | 146
Equity Derivatives | Derivatives Designated As Hedging Instrument | Other Current Liabilities |  |
Derivative [Line Items] |  |
Derivative liabilities | 4 |
Equity Derivatives | Derivatives Not Designated As Hedging Instruments | Other assets |  |
Derivative [Line Items] |  |
Derivative assets | $ 1 | $ 2

X
- Definition Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -Clause 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -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. + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -Clause 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -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. + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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