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Prepaid Expenses and Other (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Oct. 31, 2019
Capitalized Contract Cost [Line Items] |  |  |
Prepaid VAT and other taxes | $ 87,706 |  | $ 84,706
Prepaid expenses | 65,806 |  | 48,680
Product demonstration equipment, net | 37,866 |  | 38,900
Other non-trade receivables | 36,236 |  | 28,136
Deferred deployment expense | 318 |  | 125
Derivative assets | 273 |  | 1,570
Restricted cash | 0 |  | 74
Prepaid expenses and other | 321,313 |  | 297,914
Depreciation of product demonstration equipment | 2,200 | $ 2,200 |
Contract assets for unbilled accounts receivable |  |  |
Capitalized Contract Cost [Line Items] |  |  |
Contract assets | 83,717 |  | 84,046
Capitalized contract acquisition costs |  |  |
Capitalized Contract Cost [Line Items] |  |  |
Contract assets | $ 9,391 |  | $ 11,677

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