Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Reconciliation of Company's effective tax rate from federal statutory rate
Federal tax provision at statutory rate	$ 285,009	$ 206,159	$ 187,447
State tax provision, net of federal benefit	34,656	26,970	21,947
Domestic production activities deduction	(12,835)	(16,874)	(12,284)
Other permanent differences	(1,468)	(7,037)	(7,821)
Reversal of accrual for uncertain tax positions	(3,981)	(11,177)	(15,331)
Accrued interest on anticipated tax assessments	984	1,964	2,588
Increase in unrecognized tax benefits	0	2,052	3,214
Valuation allowance - recognized	0	1,018	3,681
Valuation allowance - reversed	(32,154)	0	(16,323)
Other	8,605	3,857	5,277
Income tax provision	$ 278,816	$ 206,932	$ 172,395
Federal tax provision at statutory rate, percentage	35.00%	35.00%	35.00%
State tax provision, net of federal benefit, percentage	4.30%	4.60%	4.10%
Domestic production activities deduction, Percent	(1.60%)	(2.90%)	(2.30%)
Other permanent differences, Percent	(0.20%)	(1.20%)	(1.50%)
Reversal of accrual for uncertain tax positions, percent	(0.50%)	(1.90%)	(2.90%)
Accrued interest on anticipated tax assessments, percentage	0.10%	0.30%	0.50%
Increase in unrecognized tax benefits, percentage	0.00%	0.30%	0.60%
Valuation allowance - recognized, percentage	0.00%	0.20%	0.70%
Valuation allowance - reversed, percentage	(3.90%)	0.00%	(3.00%)
Other, percentage	1.10%	0.70%	1.00%
Income tax provision, percentage	34.20%	35.10%	32.20%