Derivative Financial Instruments - Fair Values of Assets and Liabilities Measured and Recognized at Fair Value (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Oct. 31, 2015	Oct. 31, 2014
Derivative liabilities:
Total fair value	$ 5,816	$ 16,681
Other receivables [Member]
Derivative assets:
Derivative assets	5,816	16,683
Accrued liabilities [Member]
Derivative liabilities:
Derivative liabilities		(2)
Level 1 [Member]
Derivative liabilities:
Total fair value	0	0
Level 1 [Member] | Other receivables [Member]
Derivative assets:
Derivative assets	0	0
Level 1 [Member] | Accrued liabilities [Member]
Derivative liabilities:
Derivative liabilities		0
Level 2 [Member]
Derivative liabilities:
Total fair value	5,816	16,681
Level 2 [Member] | Other receivables [Member]
Derivative assets:
Derivative assets	5,816	16,683
Level 2 [Member] | Accrued liabilities [Member]
Derivative liabilities:
Derivative liabilities		(2)
Level 3 [Member]
Derivative liabilities:
Total fair value	0	0
Level 3 [Member] | Other receivables [Member]
Derivative assets:
Derivative assets	$ 0	0
Level 3 [Member] | Accrued liabilities [Member]
Derivative liabilities:
Derivative liabilities		$ 0