REVENUES - Schedule of Contract Asset and Liability (Details) - USD ($) |
6 Months Ended | |
|---|---|---|
Apr. 30, 2026 |
Oct. 31, 2025 |
|
| Revenue from Contract with Customer [Abstract] | ||
| Billed trade receivables | $ 1,263,500,000 | $ 1,223,000,000 |
| Unbilled trade receivables | 277,200,000 | 273,600,000 |
| Costs incurred in excess of amounts billed | 174,700,000 | 193,700,000 |
| Capitalized commissions | 33,300,000 | $ 32,300,000 |
| Capitalized contract price | 11,400,000 | |
| Amortization of previously capitalized contract costs | 10,400,000 | |
| Impairment loss recorded on costs capitalized | 0 | |
| Contract with Customer, Liabilities [Roll Forward] | ||
| Contract liabilities, balance at beginning of period | 148,600,000 | |
| Additional contract liabilities | 248,600,000 | |
| Recognition of deferred revenue | (225,400,000) | |
| Contract liabilities, balance at end of period | $ 171,900,000 |