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PREPAID EXPENSES AND OTHER (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Jul. 31, 2021 | Aug. 01, 2020 | Oct. 31, 2020
Capitalized Contract Cost [Line Items] |  |  |
Prepaid expenses | $ 75,287 |  | $ 70,647
Prepaid VAT and other taxes | 70,735 |  | 72,838
Product demonstration equipment, net | 35,411 |  | 44,793
Other non-trade receivables | 17,808 |  | 21,981
Derivative assets | 8,598 |  | 82
Deferred deployment expense | 336 |  | 604
Prepaid expenses and other | 323,283 |  | 308,084
Depreciation of product demonstration equipment | 7,600 | $ 6,500 |
CEWS receivable |  |  |
Capitalized Contract Cost [Line Items] |  |  |
CEWS receivable | 1,229 |  | 0
Contract assets for unbilled accounts receivable, net |  |  |
Capitalized Contract Cost [Line Items] |  |  |
Contract assets | 98,812 |  | 85,843
Capitalized contract acquisition costs |  |  |
Capitalized Contract Cost [Line Items] |  |  |
Contract assets | $ 15,067 |  | $ 11,296

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