Derivative Instruments (Details 3) - Not Designated as Hedging Instruments - USD ($) $ in Millions	Oct. 31, 2015	Oct. 31, 2014
Interest rate contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	$ 2,679.5	$ 3,075.9
Interest rate contracts | Purchased
Derivatives Not Designated as Hedging Instruments
Notional amounts	1,902.1	1,073.5
Interest rate contracts | Sold
Derivatives Not Designated as Hedging Instruments
Notional amounts	1,902.1	1,703.5
Foreign exchange contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	966.6	1,364.5
Cross-currency interest rate contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	$ 75.6	$ 98.1