REVENUES - Schedule of Contract Asset and Liability (Details) - USD ($)	6 Months Ended
	Apr. 30, 2024	Oct. 31, 2023
Revenue from Contract with Customer [Abstract]
Billed trade receivables	$ 1,167,600,000	$ 1,219,600,000
Unbilled trade receivables	171,200,000	170,400,000
Costs incurred in excess of amounts billed	152,200,000	139,200,000
Capitalized commissions	30,200,000	$ 30,200,000
Capitalized contract price	7,400,000
Amortization of previously capitalized contract costs	7,400,000
Impairment loss recorded on costs capitalized	0
Contract with Customer, Liabilities [Roll Forward]
Contract liabilities, balance at beginning of period	141,200,000
Additional contract liabilities	121,600,000
Recognition of deferred revenue	(107,900,000)
Contract liabilities, balance at end of period	$ 154,900,000