v2.4.0.6

Borrowings - Additional Information (Detail) (USD $) | 12 Months Ended
--- | ---
Jul. 28, 2012 | Jul. 30, 2011
Debt Instrument [Line Items] |  |
Short-term debt financing program | $ 3,000,000,000 | $ 3,000,000,000
Notional amount of interest rate derivatives | 0 | 0
Increase to maximum borrowing capacity-Maturity Date | Feb. 17, 2019 |
Unsecured Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
Maximum borrowing capacity | 3,000,000,000 |
Maturity date | February 17, 2017 |
LIBOR plus margin based on the Company's senior debt S&P or Moody's credit ratings description | either (i) the higher of the Federal Funds rate plus 0.50%, Bank of America's "prime rate" as announced from time to time, or one-month LIBOR plus 1.00%, or (ii) LIBOR plus a margin |
Interest Rate-Federal Funds rate plus 0.50% | 0.50% |
Interest rate-one-month LIBOR plus 1.00% | 1.00% |
Increase to maximum borrowing capacity | 2,000,000,000 |
Senior Notes Issued March 2011 |  |
Debt Instrument [Line Items] |  |
Notional amount of interest rate derivatives | $ 4,250,000,000 |

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- Definition Date when the debt instrument is scheduled to be fully repaid, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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