Short-Term and Long-Term Investments (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Nov. 02, 2019
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 232,811
Estimated Fair Value	232,893
U.S. government obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	232,811	$ 119,732
Gross Unrealized Gains	109	225
Gross Unrealized Losses	(27)	(3)
Estimated Fair Value	232,893	119,954
Short-term Investments \| U.S. government obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	150,559	109,715
Gross Unrealized Gains	109	225
Gross Unrealized Losses	(1)	0
Estimated Fair Value	150,667	109,940
Other Long-term Investments \| U.S. government obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	82,252	10,017
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(26)	(3)
Estimated Fair Value	$ 82,226	$ 10,014

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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