Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Oct. 31, 2019	Oct. 31, 2018
Deferred tax assets:
Accruals and reserves	$ 0	$ 17,766
Deferred revenue	0	37,072
Deferred compensation	56,483	50,096
Intangible and depreciable assets	160,072	185,940
Capitalized research and development costs	48,804	4,817
Stock-based compensation	20,372	19,825
Tax loss carryovers	40,068	37,029
Foreign tax credit carryovers	20,187	64,803
Research and other tax credit carryovers	278,382	250,069
Other	0	4,480
Gross deferred tax assets	624,368	671,897
Valuation allowance	(157,343)	(201,258)
Total deferred tax assets	467,025	470,639
Deferred tax liabilities:
Intangible assets	58,697	72,682
Accruals and reserves	4,450	0
Deferred revenue	6,611	0
Undistributed earnings of foreign subsidiaries	6,864	523
Other	1,762	0
Total deferred tax liabilities	78,384	73,205
Net deferred tax assets	$ 388,641	$ 397,434