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Summary Of Significant Accounting Policies (Receivables, Net) (Detail) (USD $)
In Millions, unless otherwise specified
Aug. 31, 2014
Sep. 01, 2013
Summary Of Significant Accounting Policies    
Vendor receivables $ 704 $ 581
Reinsurance receivables 253 238
Third-party pharmacy receivables 87 102
Other receivables, net 104 280
Receivables, Net $ 1,148 $ 1,201