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DERIVATIVE INSTRUMENTS (Details 6) - USD ($)
$ in Millions
Apr. 30, 2016
Oct. 31, 2015
Apr. 30, 2015
DERIVATIVE INSTRUMENTS      
Fair value of derivatives with credit-risk-related contingent features in a liability position $ 32 $ 41 $ 51
Derivative Assets      
Gross amounts recognized 479 428 404
Netting arrangements (53) (62) (76)
Collateral received (20)   (1)
Net amount 406 366 327
Derivative Liabilities      
Gross amounts recognized 145 78 153
Netting arrangements (53) (62) (76)
Net amount $ 92 $ 16 $ 77