INCOME TAXES - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	11 Months Ended	12 Months Ended
	Sep. 30, 2025	Oct. 31, 2024	Oct. 31, 2023
Unrecognized Tax Benefits [Roll Forward]
Balance of unrecognized tax benefit at beginning of year	$ 25.5	$ 23.4	$ 24.3
Increases in tax positions for prior years	6.9	1.7	0.6
Increases in tax positions for current years	3.5	3.9	4.1
Lapse in statute of limitations	(2.5)	(3.6)	(4.6)
Currency translation	1.7	0.1	(1.0)
Balance of unrecognized tax benefit at end of year	$ 35.1	$ 25.5	$ 23.4