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	$ 2,101.2	$ 2,679.5
Interest rate contracts | Purchased
Derivatives Not Designated as Hedging Instruments
Notional amounts	2,430.3	1,902.1
Interest rate contracts | Sold
Derivatives Not Designated as Hedging Instruments
Notional amounts	2,430.3	1,902.1
Foreign exchange contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	1,263.6	966.6
Cross-currency interest rate contracts
Derivatives Not Designated as Hedging Instruments
Notional amounts	$ 63.4	$ 75.6