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Short-Term Borrowings And Long-Term Debt (Schedule Of Short-Term Borrowings) (Details) (USD $)
In Millions
Jul. 31, 2011
Aug. 01, 2010
Short-Term Borrowings And Long-Term Debt    
Commercial paper $ 563 $ 96
Current portion of long-term debt   700
Variable-rate bank borrowings 92 34
Fixed-rate borrowings 1 1
Capital leases 1 1
Other   3 [1]
Total short-term borrowings $ 657 $ 835
[1] Other includes unamortized net premium/discount on debt issuances and unamortized gain on a terminated interest rate swap.