v2.4.0.6

Income Taxes (Aggregate Changes In Gross Unrecognized Tax Benefits) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 31, 2010
Income Taxes
Beginning balance	$ 2,948	$ 2,677	$ 2,816
Additions based on tax positions related to the current year	155	374	246
Additions for tax positions of prior years	54	93	60
Reductions for tax positions of prior years	(226)	(60)	(250)
Settlements	(41)	(56)	(140)
Lapse of statute of limitations	(71)	(80)	(55)
Ending balance	$ 2,819	$ 2,948	$ 2,677

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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