Employee Benefits - Schedule of Components of Net Periodic Defined Benefit Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Retirement Benefits [Abstract]
Service cost	$ 4.6	$ 4.3	$ 13.7	$ 12.9
Interest cost	1.3	1.1	3.8	3.3
Expected return on plan assets	(3.9)	(3.1)	(11.7)	(9.3)
Recognized net actuarial gain	0.6	1.3	1.8	4.0
Net periodic defined benefit plan cost	$ 2.6	$ 3.6	$ 7.6	$ 10.9