Income Taxes (Details Textual) $ in Thousands	3 Months Ended		12 Months Ended
	Jan. 31, 2017 USD ($)	Jan. 31, 2016 USD ($)	Oct. 31, 2017	Oct. 31, 2016 USD ($)
Income Taxes (Textual) [Abstract]
Income Tax Expense	$ 39,365	$ 43,637		$ 206,932
Effective Income Tax Rate Reconciliation, Percent	35.90%	37.40%
Number of states	20
Unrecognized Tax Benefits	$ 25,800
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range Not Possible	During the next 12 months, it is reasonably possible that our unrecognized tax benefits will change, but we are not able to provide a range of such change.
State and Local Jurisdiction [Member]
Income Taxes (Textual) [Abstract]
Effective Income Tax Rate Reconciliation, Percent			7.60%	7.00%
Deferred Tax Assets, Valuation Allowance	$ 32,200