Income Taxes - Difference Between U.S. Statutory Tax Rate and Effective Income Tax Rate (Details)	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Income Tax Disclosure [Abstract]
U.S. statutory rate	35.00%	35.00%	35.00%
State and local income taxes, net of federal tax benefit	7.80%	6.50%	6.70%
Federal and state tax credits	(22.70%)	(9.60%)	(2.20%)
Impact of foreign operations	(5.00%)	(3.60%)	(1.10%)
Changes in uncertain tax positions	(40.00%)	(5.20%)	(2.00%)
Incremental tax benefit from share-based compensation awards	(4.20%)	0.00%	0.00%
Nondeductible expenses	7.70%	3.80%	2.60%
Other, net	1.40%	(1.60%)	0.50%
Annual effective (benefit) tax rate	(20.00%)	25.30%	39.50%