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Summary of Significant Accounting Policies - Schedule of Topic 606 Impact Balance Sheet (Details) - USD ($) $ in Thousands | Jan. 31, 2019 | Nov. 01, 2018 | Oct. 31, 2018
--- | --- | --- | ---
Balance Sheet Related Disclosures [Abstract] |  |  |
Accounts receivable, net | $ 762,292 |  | $ 554,217
Prepaid and other current assets | 249,927 |  | 67,533
Deferred income taxes | 337,824 |  | 404,166
Other long-term assets | 358,527 |  | 246,736
Accounts payable and accrued liabilities | 335,341 |  | 578,326
Deferred revenue | 1,262,201 |  | 1,152,862
Long-term deferred revenue | 63,013 |  | 116,859
Other long-term liabilities | 296,098 |  | 265,560
Retained earnings | 2,820,910 |  | $ 2,543,688
Adjusted balance under ASC 605 |  |  |
Balance Sheet Related Disclosures [Abstract] |  |  |
Accounts receivable, net | 835,526 |  |
Prepaid and other current assets | 82,198 |  |
Deferred income taxes | 408,186 |  |
Other long-term assets | 262,812 |  |
Accounts payable and accrued liabilities | 324,628 |  |
Deferred revenue | 1,374,575 |  |
Long-term deferred revenue | 143,627 |  |
Other long-term liabilities | 279,427 |  |
Retained earnings | 2,535,458 |  |
Accounting Standards Update 2014-09 | Adjustments |  |  |
Balance Sheet Related Disclosures [Abstract] |  |  |
Accounts receivable, net | 73,234 |  |
Prepaid and other current assets | (167,729) |  |
Deferred income taxes | 70,362 |  |
Other long-term assets | (95,715) |  |
Accounts payable and accrued liabilities | (10,713) |  |
Deferred revenue | 112,374 |  |
Long-term deferred revenue | 80,614 |  |
Other long-term liabilities | (16,671) |  |
Retained earnings | $ (285,452) | $ 265,100 |

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