POST RETIREMENT BENEFIT PLANS - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Retirement Benefits [Abstract]
Service cost	$ 1.7	$ 2.0
Interest cost	8.6	8.7
Expected return on plan assets	(10.8)	(9.7)
Amortization of prior service benefit	(0.1)	(0.1)
Recognized net actuarial gain	(0.2)	(0.5)
Net periodic pension (benefit) cost	$ (0.8)	$ 0.4