XML 17 R55.htm IDEA: XBRL DOCUMENT v3.3.1.900
Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Aug. 02, 2015
Aug. 03, 2014
Jul. 28, 2013
Equity [Abstract]      
Reclassification of currency translation adjustments realized upon disposal of business, before tax $ 0 $ (22) $ 0
Reclassification of currency translation adjustments realized upon disposal of business, after-tax $ 0 $ (19) $ 0