v2.4.0.6

Shareholders' Equity - Additional Information (Detail) (USD $) Share data in Millions, except Per Share data, unless otherwise specified | 12 Months Ended | 1 Months Ended
--- | --- | ---
Jul. 28, 2012 | Jul. 30, 2011 | Aug. 14, 2012 Dividend Declared
Shareholders Equity [Line Items] |  |  |
Authorized common stock repurchase amount | $ 82,000,000,000 |  |
Remaining authorized repurchase amount | 5,900,000,000 |  |
Cash dividends paid per common share | $ 0.28 | $ 0.12 |
Cash dividends paid | 1,501,000,000 | 658,000,000 |
Dividend declared per common share to be paid | $ 0.28 | $ 0.12 | $ 0.14
Dividend declared date |  |  | Aug. 14, 2012
Dividend payable date |  |  | Oct. 28, 2012
Shares repurchased in settlement of employee tax withholding obligations | 12 | 10 |
Dollar value of shares repurchased in settlement of employee tax withholding obligations | $ 200,000,000 | $ 183,000,000 |

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