Income Taxes - Components of Income From Continuing Operations Before Income Taxes and Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Income Tax Disclosure [Abstract]
United States	$ 76.1	$ 45.1	$ 60.5
Foreign	10.8	6.8	11.9
Income from continuing operations before income taxes	86.9	51.9	72.4
Current:
Federal	(5.9)	17.5	(3.7)
State	(6.0)	(9.3)	(3.7)
Foreign	(3.0)	(1.5)	(2.8)
Deferred:
Federal	5.0	3.6	(7.9)
State	0.3	(0.5)	(0.3)
Foreign	0.8	0.6	0.1
Income tax benefit (provision)	$ (8.8)	$ 10.4	$ (18.3)