POST RETIREMENT BENEFIT PLANS - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
Retirement Benefits [Abstract]
Service cost	$ 2.0	$ 3.0
Interest cost	8.7	5.1
Expected return on plan assets	(9.7)	(8.2)
Amortization of prior service cost	(0.1)	(0.1)
Recognized net actuarial loss	(0.5)	2.0
Net periodic pension cost	$ 0.4	$ 1.8