POST-RETIREMENT BENEFIT PLANS - Components of Net Periodic Cost for Postretirement Benefits (Details) - Pension Plan - USD ($) $ in Millions	11 Months Ended	12 Months Ended
	Sep. 30, 2025	Oct. 31, 2024	Oct. 31, 2023
Expected Benefit Payments
Service cost	$ 5.0	$ 5.7	$ 6.8
Interest cost	28.4	34.9	35.0
Expected return on plan assets	(35.1)	(43.5)	(39.0)
Amortization of prior service benefit	(0.1)	(0.3)	(0.4)
Recognized net actuarial (gain) loss	0.5	(0.9)	(2.1)
Special Events
Settlement			3.5
Net periodic pension (income) cost	(1.3)	(4.1)	3.8
United States
Expected Benefit Payments
Service cost	3.8	4.2	5.3
Interest cost	21.8	26.7	26.8
Expected return on plan assets	(27.1)	(33.4)	(30.6)
Amortization of prior service benefit	0.0	(0.2)	(0.3)
Recognized net actuarial (gain) loss	0.0	(0.9)	(2.2)
Special Events
Settlement			0.0
Net periodic pension (income) cost	(1.5)	(3.6)	(1.0)
Foreign Plan
Expected Benefit Payments
Service cost	1.2	1.5	1.5
Interest cost	6.6	8.2	8.2
Expected return on plan assets	(8.0)	(10.1)	(8.4)
Amortization of prior service benefit	(0.1)	(0.1)	(0.1)
Recognized net actuarial (gain) loss	0.5	0.0	0.1
Special Events
Settlement			3.5
Net periodic pension (income) cost	$ 0.2	$ (0.5)	$ 4.8