Derivative Financial Instruments - Gains and Losses on Derivative Instruments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Other comprehensive income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Loss)/gain recognized in OCI on derivatives	$ (3,015)	$ 16,690
Cost of goods sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) reclassified from accumulated OCI into income	1,866	(3,075)
Foreign currency gain [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss reclassified from accumulated OCI into income	(135)	(20)
Gain recognized in income on derivatives		$ 181