Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Current
Federal	$ 74.0	$ 33.0	$ 20.3
State and local	8.0	6.0	4.4
Non-U.S.	36.1	25.9	40.3
Total Current	118.1	64.9	65.0
Deferred
Federal	(45.2)	4.5	0.5
State and local	0.8	(2.0)	0.5
Non-U.S.	(0.4)	(0.2)	0.5
Total Deferred	(44.8)	2.3	1.5
Total Current and Deferred income taxes	$ 73.3	$ 67.2	$ 66.5