v2.4.0.6

Employee Benefit Plans (Summary Of Significant Ranges Of Outstanding And Exercisable Stock Options) (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified					12 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 31, 2010	Jul. 25, 2009	Jul. 28, 2012 $0.01-15.00	Jul. 28, 2012 15.01-18.00	Jul. 28, 2012 18.01-20.00	Jul. 28, 2012 20.01-25.00	Jul. 28, 2012 25.01-35.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Price of Stock Options Outstanding and Exercisable, minimum					$ 0.01	$ 15.01	$ 18.01	$ 20.01	$ 25.01
Range of Exercise Price of Stock Options Outstanding and Exercisable, maximum					$ 15.00	$ 18.00	$ 20.00	$ 25.00	$ 35.00
Stock Options Outstanding	520	621	732	1,004	10	83	150	143	134
Stock Options Outstanding, Weighted-Average Remaining Contractual Life (in Years)	2.53				4.10	2.12	0.93	2.87	4.08
Stock Options Outstanding, Weighted-Average Exercise Price per Share	$ 22.68	$ 21.79	$ 21.39	$ 24.29	$ 6.95	$ 17.79	$ 19.31	$ 22.75	$ 30.64
Stock Options Outstanding, Aggregate Intrinsic Value	$ 92				$ 92
Stock Options Exercisable	512	575			9	83	150	141	129
Stock Options Exercisable, Weighted-Average Exercise Price per Share	$ 22.65	$ 21.37			$ 7.18	$ 17.79	$ 19.31	$ 22.76	$ 30.67
Stock Options Exercisable, Aggregate Intrinsic Value	$ 82				$ 82

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

+ References

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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-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.



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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

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-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.



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The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years.

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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