POST-RETIREMENT BENEFIT PLANS - Amounts Recognized in Consolidated Financial Statements - in Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2025	Oct. 31, 2024	Oct. 31, 2023
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Unrecognized net actuarial loss	$ 102.3	$ 115.1
Unrecognized prior service benefit	(0.7)	(0.8)
Accumulated other comprehensive loss - pre-tax	101.6	114.3	$ 109.2
Amounts recognized in the consolidated balance sheets consist of:
Prepaid benefit cost	64.1	46.0
Accrued benefit liability	(59.2)	(59.2)
Accumulated other comprehensive loss - pre-tax	101.6	114.3	$ 109.2
Net amount recognized	106.5	101.1
United States
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Unrecognized net actuarial loss	21.8	37.4
Unrecognized prior service benefit	0.0	0.0
Accumulated other comprehensive loss - pre-tax	21.8	37.4
Amounts recognized in the consolidated balance sheets consist of:
Prepaid benefit cost	59.6	41.7
Accrued benefit liability	(28.5)	(28.8)
Accumulated other comprehensive loss - pre-tax	21.8	37.4
Net amount recognized	52.9	50.3
Foreign Plan
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Unrecognized net actuarial loss	80.5	77.7
Unrecognized prior service benefit	(0.7)	(0.8)
Accumulated other comprehensive loss - pre-tax	79.8	76.9
Amounts recognized in the consolidated balance sheets consist of:
Prepaid benefit cost	4.5	4.3
Accrued benefit liability	(30.7)	(30.4)
Accumulated other comprehensive loss - pre-tax	79.8	76.9
Net amount recognized	$ 53.6	$ 50.8