Goodwill And Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 29, 2012	Jul. 31, 2011	Aug. 01, 2010
Finite-Lived Intangible Assets [Line Items]
Amortization of amortizable intangible assets	approximately $1	approximately $1	approximately $1
Estimated aggregated amortization expense year one	less than $1
Estimated aggregated amortization expense year two	less than $1
Estimated aggregated amortization expense year three	less than $1
Estimated aggregated amortization expense year four	less than $1
Estimated aggregated amortization expense year five	less than $1
Asset useful lives minimum range, years	1
Asset useful lives maximum range, years	20
Carrying value of certain European trademarks	$ 40
Fair Value, Inputs, Level 3 [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 3	3