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Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Oct. 31, 2015 | Oct. 31, 2014
--- | --- | ---
Deferred Tax Assets, Gross [Abstract] |  |
Accruals and reserves | $ 40,373 | $ 28,608
Deferred revenue | 36,460 | 42,766
Deferred compensation | 69,716 | 56,920
Capitalized costs | 60,998 | 66,616
Capitalized research and development costs | 24,748 | 32,710
Stock compensation | 18,001 | 18,508
Tax loss carryovers | 50,987 | 64,273
Foreign tax credit carryovers | 1,064 | 18,846
Research and other tax credit carryovers | 80,327 | 110,247
Other | 5,340 | 4,689
Gross deferred tax assets | 388,014 | 444,183
Valuation allowance | (48,700) | (45,996)
Total deferred tax assets | 339,314 | 398,187
Deferred Tax Liabilities, Gross [Abstract] |  |
Intangible assets | 66,345 | 81,218
Undistributed earnings of foreign subsidiaries | 933 | 726
Total deferred tax liabilities | 67,278 | 81,944
Net deferred tax assets | $ 272,036 | $ 316,243

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