Derivative Financial Instruments - Gains and Losses on Derivative Instruments (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Other comprehensive income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain recognized in OCI on derivatives	$ 721	$ 14,949
Cost of goods sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) reclassified from accumulated OCI into income	3,806	(2,174)
Foreign currency loss [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) reclassified from accumulated OCI into income	(32)	(203)
Loss recognized in income on derivatives		$ (132)