Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Reconciliation of Company's effective tax rate from federal statutory rate
Federal tax provision at statutory rate	$ 123,249	$ 165,306	$ 217,914
State tax provision, net of federal benefit	25,793	37,898	47,073
Domestic production activities deduction	0	0	(18,168)
Other permanent differences	4,755	4,866	(2,322)
Reversal of accrual for uncertain tax positions	(1,749)	(5,348)	(4,741)
Accrued interest on anticipated tax assessments	404	453	737
Increase in unrecognized tax benefits	0	2,153	1,122
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	0	(523)	(38,740)
Effective Income Tax Rate Reconciliation, Tax Benefit from Stock Compensation	(3,339)	(2,143)	(4,236)
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	(11,467)	(3,123)	(3,231)
Other	2,631	(2,376)	(9,643)
Income tax provision	$ 140,277	$ 197,163	$ 185,765
Federal tax provision at statutory rate, percentage	21.00%	21.00%	23.30%	35.00%
State tax provision, net of federal benefit, percentage	4.40%	4.80%	5.00%
Domestic production activities deduction, Percent	0.00%	0.00%	(1.90%)
Other permanent differences, Percent	0.80%	0.60%	(0.20%)
Reversal of accrual for uncertain tax positions, percent	(0.30%)	(0.70%)	(0.50%)
Accrued interest on anticipated tax assessments, percentage	0.10%	0.10%	0.10%
Increase in unrecognized tax benefits, percentage	0.00%	0.30%	0.10%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	0.00%	(0.10%)	(4.10%)
Effective Income Tax Rate Reconciliation Tax Benefit from Stock Compensation, Percent	(0.60%)	(0.30%)	(0.50%)
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(2.00%)	(0.40%)	(0.40%)
Other, percentage	0.50%	(0.30%)	(1.00%)
Income tax provision, percentage	23.90%	25.00%	19.90%