DERIVATIVE INSTRUMENTS (Details 3) - Not Designated as Hedging Instruments - USD ($) $ in Millions	Jul. 31, 2015	Oct. 31, 2014	Jul. 31, 2014
Interest Rate Contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	$ 5,912	$ 6,317	$ 6,303
Interest Rate Contracts | Purchased
Derivatives Not Designated as Hedging Instruments
Notional amounts	1,190	1,703	1,858
Interest Rate Contracts | Sold
Derivatives Not Designated as Hedging Instruments
Notional amounts	1,190	1,703	1,858
Foreign Exchange Contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	3,040	3,524	3,578
Cross-Currency Interest Rate Contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	$ 80	$ 98	$ 78