DERIVATIVE INSTRUMENTS (Details 3) (Not Designated as Hedging Instruments, USD $) In Millions, unless otherwise specified	Apr. 30, 2015	Oct. 31, 2014	Apr. 30, 2014
Interest Rate Contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	$ 6,342	$ 6,317	$ 5,949
Foreign Exchange Contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	3,750	3,524	3,731
Cross-Currency Interest Rate Contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	94	98	88
Interest Rate Caps Purchased
Derivatives Not Designated as Hedging Instruments
Notional amounts	1,320	1,703	1,597
Interest Rate Caps Sold
Derivatives Not Designated as Hedging Instruments
Notional amounts	$ 1,320	$ 1,703	$ 1,597