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Financing Receivables and Operating Leases (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Apr. 30, 2014
Oct. 31, 2013
Financing Receivables and Operating Leases    
Financing receivable term, low end of range 2 years  
Financing receivable term, high end of range 5 years  
Minimum lease payments receivable $ 7,228 $ 7,505
Unguaranteed residual value 245 252
Unearned income (583) (604)
Financing receivables, gross 6,890 7,153
Allowance for doubtful accounts (137) (131)
Financing receivables, net 6,753 7,022
Less current portion (3,112) (3,144)
Amounts due after one year, net $ 3,641 $ 3,878