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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalent maturity period, months	3 months
Depreciation expenses	$ 73,800,000	$ 71,100,000	$ 63,100,000
Repair and maintenance costs	38,800,000	32,300,000	28,700,000
Goodwill impairment loss	0	0	0
Long-lived assets impairment loss	$ 0	0	0
Additional maintenance perpetual license period (in years)	20 years
Software product warranty period (in days)	90 days
Restructuring Charges	$ 9,633,000	15,088,000	$ 0
Term Licenses
Summary Of Significant Accounting Policies [Line Items]
License fee percentage	75.00%
Maintenance fee percentage	100.00%
Perpetual licenses
Summary Of Significant Accounting Policies [Line Items]
License fee percentage	75.00%
Maintenance fee percentage	100.00%
Perpetual And Term Licenses
Summary Of Significant Accounting Policies [Line Items]
License fee percentage	75.00%
Maintenance fee percentage	100.00%
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Hardware product warranty period (in months)	6 months
Intangible Assets | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible assets amortization period	1 year
Intangible Assets | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible assets amortization period	10 years
Voluntary Retirement Program and Headcount Reduction Program
Summary Of Significant Accounting Policies [Line Items]
Payroll and related benefits liabilities		0
Restructuring Charges		$ 15,100,000
2016 Restructuring
Summary Of Significant Accounting Policies [Line Items]
Payroll and related benefits liabilities	$ 5,700,000
Involuntary Termination Benefits | 2016 Restructuring
Summary Of Significant Accounting Policies [Line Items]
Payments for restructuring charges	3,900,000
Restructuring Charges	$ 9,600,000

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