v2.4.0.6
Financing Receivables and Guarantees (Schedule Of Financing Receivables) (Detail) (USD $)
In Millions, unless otherwise specified
Jul. 28, 2012
Jul. 30, 2011
Lease Receivables
   
Financing Receivables [Line Items]    
Gross $ 3,429 $ 3,111
Unearned income (250) (250)
Allowance for credit loss (247) (237)
Total, net 2,932 2,624
Current 1,200 1,087
Noncurrent 1,732 1,537
Total, net 2,932 2,624
Loan Receivables
   
Financing Receivables [Line Items]    
Gross 1,796 1,468
Allowance for credit loss (122) (103)
Total, net 1,674 1,365
Current 968 673
Noncurrent 706 692
Total, net 1,674 1,365
Financed Service Contracts & Other
   
Financing Receivables [Line Items]    
Gross 2,651 2,637
Allowance for credit loss (11) (27)
Total, net 2,640 2,610
Current 1,493 1,351
Noncurrent 1,147 1,259
Total, net 2,640 2,610
Total Financing Receivables
   
Financing Receivables [Line Items]    
Gross 7,876 7,216
Unearned income (250) (250)
Allowance for credit loss (380) (367)
Total, net 7,246 6,599
Current 3,661 3,111
Noncurrent 3,585 3,488
Total, net $ 7,246 $ 6,599