REDEEMABLE NONCONTROLLING INTERESTS - Rollforward of Redeemable Noncontrolling Interest (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Redeemable Noncontrolling Interest, Equity [Roll Forward]
Redeemable Noncontrolling Interest, Equity, Carrying Amount			$ 21.3
Current period mark to redemption value			(2.2)
Redeemable noncontrolling interest share of income and other	$ 0.3	$ (0.5)	0.2	$ (1.8)
Dividends to redeemable noncontrolling interest and other			(0.7)
Redeemable Noncontrolling Interest, Equity, Carrying Amount	$ 18.6		$ 18.6