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