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Business Combinations (Acquisition of Coverity, Inc. (Coverity)) - Additional Information (Detail) (Coverity Inc, USD $)	0 Months Ended			9 Months Ended
	Mar. 24, 2014	Jul. 31, 2014	Mar. 24, 2014	Jul. 31, 2014 Minimum	Jul. 31, 2014 Maximum
Business Acquisition [Line Items]
Date of acquisition	Mar. 24, 2014
Total cash consideration	$ 375,500,000
Deferred revenue gross		68,500,000
Deferred revenue		21,270,000	21,270,000
Goodwill		266,400,000
Identifiable intangibles assets acquired		101,900,000	101,900,000
Definite lived intangible asset amortization period				2 years	8 years
Fair value of stock options assumed		$ 15,000,000

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- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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-Publisher FASB

-Name Accounting Standards Codification

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The amount of identifiable intangible assets recognized as of the acquisition date.

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