Income Taxes (Details)	3 Months Ended		9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Income Tax Disclosure Details [Abstract]
Effective income tax rate (as a percent)	35.50%	38.70%	35.70%	39.90%
Federal statutory rate			35.00%