POST-RETIREMENT BENEFIT PLANS - Amounts Recognized in Consolidated Financial Statements - in Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Unrecognized net actuarial loss	$ 87.2	$ 149.7
Unrecognized prior service credit	(2.0)	0.9
Accumulated other comprehensive loss - Pre-tax	85.2	150.6	$ 172.6
Amounts recognized in the Consolidated Balance Sheets consist of:
Prepaid benefit cost	39.9	29.5
Accrued benefit liability	(78.3)	(137.7)
Accumulated other comprehensive loss - Pre-tax	85.2	150.6	$ 172.6
Net amount recognized	46.8	42.4
United States
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Unrecognized net actuarial loss	29.9	94.1
Unrecognized prior service credit	(0.7)	(0.8)
Accumulated other comprehensive loss - Pre-tax	29.2	93.3
Amounts recognized in the Consolidated Balance Sheets consist of:
Prepaid benefit cost	2.7	0.0
Accrued benefit liability	(35.5)	(94.7)
Accumulated other comprehensive loss - Pre-tax	29.2	93.3
Net amount recognized	(3.6)	(1.4)
Germany
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Unrecognized net actuarial loss	11.9	14.8
Unrecognized prior service credit	0.0	0.0
Accumulated other comprehensive loss - Pre-tax	11.9	14.8
Amounts recognized in the Consolidated Balance Sheets consist of:
Prepaid benefit cost	0.0	0.0
Accrued benefit liability	(39.3)	(42.1)
Accumulated other comprehensive loss - Pre-tax	11.9	14.8
Net amount recognized	(27.4)	(27.3)
United Kingdom
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Unrecognized net actuarial loss	36.2	32.4
Unrecognized prior service credit	0.0	3.2
Accumulated other comprehensive loss - Pre-tax	36.2	35.6
Amounts recognized in the Consolidated Balance Sheets consist of:
Prepaid benefit cost	31.1	25.3
Accrued benefit liability	0.0	0.0
Accumulated other comprehensive loss - Pre-tax	36.2	35.6
Net amount recognized	67.3	60.9
Netherlands
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Unrecognized net actuarial loss	4.4	4.5
Unrecognized prior service credit	(1.3)	(1.5)
Accumulated other comprehensive loss - Pre-tax	3.1	3.0
Amounts recognized in the Consolidated Balance Sheets consist of:
Prepaid benefit cost	2.0	1.1
Accrued benefit liability	0.0	0.0
Accumulated other comprehensive loss - Pre-tax	3.1	3.0
Net amount recognized	5.1	4.1
Other International
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Unrecognized net actuarial loss	4.8	3.9
Unrecognized prior service credit	0.0	0.0
Accumulated other comprehensive loss - Pre-tax	4.8	3.9
Amounts recognized in the Consolidated Balance Sheets consist of:
Prepaid benefit cost	4.1	3.1
Accrued benefit liability	(3.5)	(0.9)
Accumulated other comprehensive loss - Pre-tax	4.8	3.9
Net amount recognized	$ 5.4	$ 6.1