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Summary of Significant Accounting Policies - Schedule of Topic 606 Impact Balance Sheet (Details) - USD ($) $ in Thousands | Apr. 30, 2019 | Nov. 01, 2018 | Oct. 31, 2018
--- | --- | --- | ---
Balance Sheet Related Disclosures [Abstract] |  |  |
Accounts receivable, net | $ 526,691 |  | $ 554,217
Prepaid and other current assets | 259,849 |  | 67,533
Deferred income taxes | 352,667 |  | 404,166
Other long-term assets | 380,682 |  | 246,736
Accounts payable and accrued liabilities | 365,848 |  | 578,326
Deferred revenue | 1,194,404 |  | 1,152,862
Long-term deferred revenue | 60,825 |  | 116,859
Other long-term liabilities | 324,217 |  | 265,560
Retained earnings | 2,912,811 |  | $ 2,543,688
Adjusted balance under ASC 605 |  |  |
Balance Sheet Related Disclosures [Abstract] |  |  |
Accounts receivable, net | 588,540 |  |
Prepaid and other current assets | 91,362 |  |
Deferred income taxes | 420,430 |  |
Other long-term assets | 284,241 |  |
Accounts payable and accrued liabilities | 356,349 |  |
Deferred revenue | 1,285,471 |  |
Long-term deferred revenue | 134,279 |  |
Other long-term liabilities | 307,546 |  |
Retained earnings | 2,639,144 |  |
Accounting Standards Update 2014-09 | Adjustments |  |  |
Balance Sheet Related Disclosures [Abstract] |  |  |
Accounts receivable, net | 61,849 |  |
Prepaid and other current assets | (168,487) |  |
Deferred income taxes | 67,763 |  |
Other long-term assets | (96,441) |  |
Accounts payable and accrued liabilities | (9,499) |  |
Deferred revenue | 91,067 |  |
Long-term deferred revenue | 73,454 |  |
Other long-term liabilities | (16,671) |  |
Retained earnings | $ (273,667) | $ 265,100 |

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