v2.4.0.6

Shareholders' Equity (Stock Repurchase Program) (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified | 12 Months Ended
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Jul. 28, 2012 | Jul. 30, 2011
Shareholders' Equity [Abstract] |  |
Cumulative Shares Repurchased, Beginning balance | 3,478 | 3,127
Repurchase of common stock under the stock repurchase program, Shares Repurchased | 262 | 351
Cumulative Shares Repurchased, Ending balance | 3,740 | 3,478
Cumulative Weighted-Average Price per Share, Beginning balance | $ 20.64 | $ 20.78
Repurchase of common stock under the stock repurchase program, Weighted-Average Price per Share | $ 16.64 | $ 19.36
Cumulative Weighted-Average Price per Share, Ending balance | $ 20.36 | $ 20.64
Cumulative Amount Repurchased, Beginning balance | $ 71,773 | $ 64,982
Repurchase of common stock under the stock repurchase program, Amount Repurchased | 4,360 | 6,791
Cumulative Amount Repurchased, Ending balance | $ 76,133 | $ 71,773

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- Definition Cumulative Stock Repurchased And Retired Value. + References No definition available. + Details
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- Definition Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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