COMPREHENSIVE INCOME (LOSS) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			$ 1,152.2
Other Comprehensive Income (Loss)	$ (13.9)	$ 59.2	78.8	$ 3.9
Ending balance	1,448.9		1,448.9
Foreign Currency Translation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance				(298.0)
Other Comprehensive Income (Loss)			17.9	12.6
Ending balance	(277.0)	(285.4)	(277.0)	(285.4)
Derivative Financial Instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance				(12.7)
Other Comprehensive Income (Loss)			10.8	(20.9)
Ending balance	(13.9)	(33.6)	(13.9)	(33.6)
Minimum Pension Liability Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance				(123.0)
Other Comprehensive Income (Loss)			49.3	20.6
Ending balance	(58.6)	(102.4)	(58.6)	(102.4)
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance			(427.5)	(433.7)
Other Comprehensive Income (Loss)			78.0	12.3
Ending balance	$ (349.5)	$ (421.4)	$ (349.5)	$ (421.4)