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