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Related Party Transactions	3 Months Ended
	Apr. 30, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions We lease certain office space from an affiliate of our Chairman, Mr. Duffield, adjacent to our corporate headquarters in Pleasanton, California under various lease agreements. The average term of the agreements is 9 years and the total rent expense under these agreements was $3 million and $2 million for the three months ended April 30, 2018 and 2017, respectively.

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- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-URI http://asc.fasb.org/topic&trid=2122745

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