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Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Income Taxes (Textual) [Abstract]
Effective tax rate	37.30%	20.40%	32.60%	22.30%
Net decrease in unrecognized tax benefits for the next 12 months, Minimum	$ 0		$ 0
Net decrease in unrecognized tax benefits for the next 12 months, Maximum	$ 48.5		$ 48.5

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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