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Summary of Significant Accounting Policies - Components of Property and Equipment (Detail) - USD ($) $ in Thousands		Oct. 31, 2015	Oct. 31, 2014
Property, Plant and Equipment, Net [Abstract]
Computer and other equipment		$ 436,425	$ 419,951
Buildings		67,943	68,871
Furniture and fixtures		50,075	41,089
Land		20,414	20,414
Leasehold improvements		142,275	136,513
Property, Plant and Equipment, Gross, Total		717,132	686,838
Less accumulated depreciation and amortization(1)	[1]	(454,055)	(437,740)
Total		$ 263,077	$ 249,098
[1] Accumulated depreciation and amortization includes write-offs due to retirement of fully amortized fixed assets.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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