POST RETIREMENT BENEFIT PLANS - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Retirement Benefits [Abstract]
Service cost	$ 2.0	$ 2.9	$ 6.0	$ 8.9
Interest cost	8.8	5.0	26.2	15.2
Expected return on plan assets	(9.8)	(8.2)	(29.2)	(24.7)
Amortization of prior service benefit	(0.1)	(0.1)	(0.3)	(0.3)
Recognized net actuarial (gain) loss	(0.5)	1.9	(1.6)	5.9
Net periodic pension cost	$ 0.4	$ 1.5	$ 1.1	$ 5.0