Derivative Financial Instruments Not Designated for Hedge Accounting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Oct. 31, 2012
Foreign Exchange Contracts [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	$ 998		$ 226
Other liabilities fair value	654		300
Net gains (losses) recognized	346	233
Stock Index Futures Contracts [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	72		1,505
Other liabilities fair value	7,252		367
Net gains (losses) recognized	(10,030)	(4,145)
Commodity Futures Contracts [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	68		498
Other liabilities fair value	586		121
Net gains (losses) recognized	(349)	494
Total [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	1,138		2,229
Other liabilities fair value	8,492		788
Net gains (losses) recognized	$ (10,033)	$ (3,418)