Income Taxes (Reconciliation of the difference between the company's effective tax rate and the U.S. federal statutory tax rate) (Details)		12 Months Ended
	Dec. 22, 2017	Oct. 31, 2020	Oct. 31, 2019	Dec. 31, 2018	Oct. 31, 2018
Reconciliation to the Company's effective income tax rate
Statutory U.S. federal income tax rate	35.00%	21.00%	21.00%	21.00%	23.30%
State income tax, net of federal income tax benefits		5.00%	4.70%		4.40%
Net income attributable to non-controlling and other beneficial interests		0.30%	(1.20%)		(0.70%)
Non-recurring impact of U.S. tax reform		0.00%	0.00%		4.40%
Stock-based compensation		(0.10%)	0.20%		0.40%
Net excess tax benefits from stock-based compensation plans		(2.70%)	(1.00%)		(3.20%)
Other items		1.60%	0.50%		0.20%
Effective income tax rate		25.10%	24.20%		28.80%