Income Taxes - Components of Income Before Income Taxes and Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Income Tax Disclosure [Abstract]
United States	$ 45.1	$ 60.5	$ 104.5
Foreign	6.8	11.9	6.1
Total income before income taxes	51.9	72.4	110.6
Current:
Federal	17.5	(3.7)	(32.6)
State	(9.3)	(3.7)	(7.6)
Foreign	(1.5)	(2.8)	(1.3)
Deferred:
Federal	3.6	(7.9)	(0.8)
State	(0.5)	(0.3)	(1.4)
Foreign	0.6	0.1	0.0
Provision for income taxes	$ 10.4	$ (18.3)	$ (43.7)