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Stock-Based Benefit Plans (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Stock-based compensation expense recognized
Stock based expense recognized	$ 15,575	$ 12,548	$ 9,689
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	5,711	4,793	3,711
Employee Stock Option [Member]
Stock-based compensation expense recognized
Stock based expense recognized	$ 7,411	$ 8,626	$ 9,332

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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