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COMMITMENTS AND CONTINGENCIES (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Apr. 30, 2013
Apr. 30, 2012
COMMITMENTS AND CONTINGENCIES        
Historical claims rate, review period     5 years  
Unamortized extended warranty premiums (deferred revenue) $ 325 $ 249 $ 325 $ 249
Change in Warranty Liability and Unearned Premiums        
Beginning of period balance 1,091 895 1,025 892
Payments (158) (121) (323) (257)
Amortization of premiums received (29) (26) (57) (51)
Accruals for warranties 204 161 415 300
Premiums received 47 35 91 70
Foreign exchange (3) (1) 1 (11)
End of period balance $ 1,152 $ 943 $ 1,152 $ 943