Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Oct. 31, 2020	Oct. 31, 2019
Deferred tax assets:
Deferred revenue	$ 2,367	$ 0
Deferred compensation	55,172	56,483
Intangible and depreciable assets	115,097	160,072
Capitalized research and development costs	118,857	48,804
Stock-based compensation	28,478	20,372
Tax loss carryovers	35,571	40,068
Foreign tax credit carryovers	18,645	20,187
Research and other tax credit carryovers	320,317	278,382
Operating Lease Liabilities	101,386	0
Gross deferred tax assets	795,890	624,368
Valuation allowance	(158,895)	(157,343)
Total deferred tax assets	636,995	467,025
Deferred tax liabilities:
Intangible assets	45,915	58,697
Operating lease Right-of-Use-Assets	84,716	0
Accruals and reserves	7,780	4,450
Deferred revenue	0	6,611
Undistributed earnings of foreign subsidiaries	3,063	6,864
Other	372	1,762
Total deferred tax liabilities	141,846	78,384
Net deferred tax assets	$ 495,149	$ 388,641