Supplemental Financial Statement Data (Schedule Of Statement Of Earnings) (Details) (USD $) In Millions	12 Months Ended
	Jul. 31, 2011		Aug. 01, 2010	Aug. 02, 2009
Supplemental Financial Statement Data
Foreign exchange (gains)/losses	$ 5		$ 1	$ (7)
Amortization/impairment of intangible and other assets	3	[1]		67	[1]
Other	5		3	1
Other expenses / (income)	13		4	61
Interest expense	123		116	114
Less: Interest capitalized	1		4	4
Interest expense	122		112	110
Impairment charge to certain European trademarks				67
Impairment charge to certain European trademarks	$ 3

[1] In 2011, a $3 impairment charge was recognized related to a trademark. In 2009, a $67 impairment charge was recognized on certain trademarks. See also Note 5.