RESTRUCTURING AND RELATED COSTS - Schedule of Restructuring and Related Liabilities (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Oct. 31, 2025	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Restructuring Reserve [Roll Forward]
Balance, beginning of year		$ 0.0
Costs recognized	$ 13.4	13.4	$ 0.0	$ 0.0
Payments		(7.0)
Non-cash items		(2.8)
Balance, end of year	3.6	3.6	0.0
Employee Severance
Restructuring Reserve [Roll Forward]
Balance, beginning of year		0.0
Costs recognized		10.4
Payments		(7.0)
Non-cash items		0.0
Balance, end of year	3.4	3.4	0.0
Asset Impairment
Restructuring Reserve [Roll Forward]
Balance, beginning of year		0.0
Costs recognized		2.8
Payments		0.0
Non-cash items		(2.8)
Balance, end of year	0.0	0.0	0.0
Other
Restructuring Reserve [Roll Forward]
Balance, beginning of year		0.0
Costs recognized		0.2
Payments		0.0
Non-cash items		0.0
Balance, end of year	$ 0.2	$ 0.2	$ 0.0