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Business Combinations (Total Purchase Consideration and Preliminary Purchase Price Allocation) (Detail) (USD $) In Thousands, unless otherwise specified				0 Months Ended
	Jul. 31, 2014	Oct. 31, 2013		Mar. 24, 2014 Coverity Inc	Jul. 31, 2014 Coverity Inc	Mar. 24, 2014 Coverity Inc
Business Acquisition [Line Items]
Total cash consideration				$ 375,500
Goodwill	2,260,897	1,975,971	[1]			266,423
Identifiable intangibles assets acquired					101,900	101,900
Other tangible assets acquired, net						28,447
Deferred revenue					(21,270)	(21,270)
Total purchase price allocation						$ 375,500
[1] Derived from audited financial statements.

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Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deferred Revenue Current And Noncurrent

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

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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