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Allowance for Doubtful Accounts - Allowance for Doubtful Accounts, Includes Bad Debts as Well as Returns and Allowances (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Finance Receivable Transferred To Held For Sale [Line Items]
Balance, beginning of year	$ 48,670	$ 48,043	$ 47,211
Provision for doubtful accounts	4,594	8,732	15,307
Deductions	(8,117)	(8,105)	(14,475)
Balance, end of year	$ 45,147	$ 48,670	$ 48,043

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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