INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Income Tax Disclosure [Abstract]
Income tax expense	$ 33.1	$ 6.9	$ 56.5	$ 44.8
Favorable reconciliation tax settlement			$ 6.8