DERIVATIVE INSTRUMENTS - Not Designated as Hedging Instruments (Details) - Not Designated as Hedging Instruments - USD ($) $ in Millions	Oct. 31, 2016	Oct. 31, 2015
Interest Rate Contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	$ 6,060	$ 6,333
Interest Rate Contracts | Purchased
Derivatives Not Designated as Hedging Instruments
Notional amounts	579	1,069
Interest Rate Contracts | Sold
Derivatives Not Designated as Hedging Instruments
Notional amounts	579	1,069
Foreign Exchange Contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	3,919	3,160
Cross-Currency Interest Rate Contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	$ 63	$ 76