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COMMITMENTS AND CONTINGENCIES (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Apr. 30, 2012
Y
Apr. 30, 2011
Apr. 30, 2012
Apr. 30, 2011
COMMITMENTS AND CONTINGENCIES        
Historical claims rate, review period (in years) 5      
Unamortized extended warranty premiums (deferred revenue) $ 249 $ 214 $ 249 $ 214
Change in Warranty Liability and Unearned Premiums        
Beginning of period balance 895 822 892 762
Payments (121) (140) (257) (273)
Amortization of premiums received (26) (24) (51) (46)
Accruals for warranties 161 158 300 349
Premiums received 35 31 70 56
Foreign exchange (1) 13 (11) 12
End of period balance $ 943 $ 860 $ 943 $ 860