Income Taxes Reconciliation (Details)
3 Months Ended 6 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Apr. 30, 2013
Apr. 30, 2012
Reconconciliation to the Company's effective income tax rate        
Federal statutory rate 35.00% 35.00% 35.00% 35.00%
Effective income tax rate (as a percent) 36.10% 35.90% 36.90% 35.80%