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Note 16 (Detail) (USD $)	3 Months Ended		9 Months Ended
Note 16 (Detail) (USD $)	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011	Oct. 31, 2011
Income Tax Expense (Benefit)	$ (36,493,000)	$ (4,645,000)	$ (35,254,000)	$ (6,081,000)
Deferred Tax Assets, Valuation Allowance	$ 909,100,000		$ 909,100,000		$ 899,400,000

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.