Derivative Financial Instruments Not Designated for Hedge Accounting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012	Oct. 31, 2012
Foreign Exchange Contracts [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	$ 767		$ 767		$ 226
Other liabilities fair value	90		90		300
Net gains (losses) recognized	1,212	299	2,406	727
Stock Index Futures Contracts [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	202		202		1,505
Other liabilities fair value	6,407		6,407		367
Net gains (losses) recognized	(3,028)	616	(21,939)	(9,285)
Commodity Futures Contracts [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	333		333		498
Other liabilities fair value	171		171		121
Net gains (losses) recognized	483	56	1,177	1,069
Interest Rate Contract [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Net gains (losses) recognized	(3,075)		(3,075)
Total [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	1,302		1,302		2,229
Other liabilities fair value	6,668		6,668		788
Net gains (losses) recognized	$ (4,408)	$ 971	$ (21,431)	$ (7,489)