Income Taxes - Tax Loss and Credit Carryforwards Available to Offset Future Income Tax Liabilities (Detail) $ in Thousands	Oct. 31, 2023 USD ($)
Federal
Net Operating Loss and Tax Credit Carryforward [Line Items]
Net operating loss carryforward	$ 156,991
Credit carryforward	14,705
Federal foreign tax credit carryforward
Net Operating Loss and Tax Credit Carryforward [Line Items]
Credit carryforward	27,522
International foreign tax credit carryforward
Net Operating Loss and Tax Credit Carryforward [Line Items]
Net operating loss carryforward	48,823
Credit carryforward	10,929
California research credit carryforward
Net Operating Loss and Tax Credit Carryforward [Line Items]
Credit carryforward	243,960
Other state research credit carryforward
Net Operating Loss and Tax Credit Carryforward [Line Items]
Credit carryforward	25,176
State net operating loss carryforward
Net Operating Loss and Tax Credit Carryforward [Line Items]
Net operating loss carryforward	$ 236,391