Deferred Plan Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2012		Oct. 31, 2011
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Plan assets recorded in other long-term assets	$ 100,645		$ 90,060
Plan liabilities recorded in other long-term liabilities	$ 100,645	[1]	$ 90,060	[1]

[1] For undistributed deferred compensation due to participants.