Restructuring And Other Charges (Schedule Of Activities Related To Restructuring And Other Charges) (Detail) (August Fiscal 2014 Restructuring Plan, USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Apr. 26, 2014	Apr. 26, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 26	$ 336
Cash Payments		(306)
Non-Cash Items		(5)
Restructuring Reserve	25	25
Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance Costs		331
Cash Payments		(306)
Non-Cash Items		0
Restructuring Reserve	25	25
Other Charges
Restructuring Cost and Reserve [Line Items]
Other		5
Cash Payments		0
Non-Cash Items		(5)
Restructuring Reserve	$ 0	$ 0

Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

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-Name Accounting Standards Codification

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of consideration other than cash used to fully or partially settle an accrued restructuring cost.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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