REVENUES - Schedule of Contract Asset and Liability (Details) - USD ($) |
6 Months Ended | |
|---|---|---|
Apr. 30, 2025 |
Oct. 31, 2024 |
|
| Revenue from Contract with Customer [Abstract] | ||
| Billed trade receivables | $ 1,332,500,000 | $ 1,282,900,000 |
| Unbilled trade receivables | 295,100,000 | 124,000,000.0 |
| Costs incurred in excess of amounts billed | 131,500,000 | 162,100,000 |
| Capitalized commissions | 31,800,000 | $ 30,800,000 |
| Capitalized contract price | 9,700,000 | |
| Amortization of previously capitalized contract costs | 8,700,000 | |
| Impairment loss recorded on costs capitalized | 0 | |
| Contract with Customer, Liabilities [Roll Forward] | ||
| Contract liabilities, balance at beginning of period | 118,200,000 | |
| Additional contract liabilities | 173,400,000 | |
| Recognition of deferred revenue | (163,400,000) | |
| Contract liabilities, balance at end of period | $ 128,100,000 |