Income Taxes - Schedule of Income Tax Provision (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Current:
Federal	$ 9.2	$ 165.6	$ 6.9
State	1.6	0.5	1.8
Foreign	15.8	23.0	19.5
Total Current	26.6	189.1	28.2
Deferred:
Federal	(8.1)	16.1	(3.9)
State	(0.9)	1.0	1.4
Foreign	(6.9)	(14.2)	(4.6)
Total Deferred	(15.9)	2.9	(7.1)
Income tax provision	$ 10.7	$ 192.0	$ 21.1