The amount as of the balance sheet date of undistributed foreign earnings on which the entity has not provided deferred taxes as these amounts are considered to be permanently reinvested.

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Taxes On Earnings (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended					12 Months Ended		12 Months Ended		12 Months Ended
	Jul. 31, 2011	Aug. 01, 2010	Aug. 02, 2009	Jul. 31, 2011 Tax Loss Carryfowards Expiring 2012 To 2028 [Member]	Jul. 31, 2011 Tax Loss Carryfowards Indefinitely [Member]	Jul. 31, 2011 Domestic Country [Member] Maximum [Member]	May 02, 2010 U.S. Health Care Legislation [Member]	Jul. 31, 2011 Foreign Country [Member] Minimum [Member]	Jul. 31, 2011 Non-U.S. [Member]	Jul. 31, 2011 Minimum [Member]	Jul. 31, 2011 Maximum [Member]
Deferred tax expense							$ 10
Tax benefit recorded	8	9	11
Additional tax benefit recorded		2
Tax loss carryforward	395			163	232
Tax loss carryforward, expiration date										2012	2028
Statutory tax rate	35.00%	35.00%	35.00%			35.00%		20.00%
Tax loss carryforward, valuation allowance	132
Valuation allowance increase (decrease)	33	15	(7)
Capital loss carryforwards									406
Undistributed earning of non-U.S. subsidiaries deemed permanently reinvested	420
Unrecognized tax benefits	17	22	28
Interest and penalties expense (benefit) recognized in Statement of Earnings	(1)	2	(1)
Interest and penalties recognized in Consolidated Balance Sheets, recognized	8	9
Unrecognized tax benefit liabilities recognized in Consolidated Balance Sheets	$ 51	$ 45