Subsequent Events	3 Months Ended
Apr. 30, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsOn May 7, 2020, we announced the acquisition of Keybase, a secure messaging and file-sharing company. The acquisition helps us strengthen the security of our video communications platform by providing end-to-end encryption expertise that we can leverage as we develop and roll out an end-to-end encryption offering. The total purchase consideration will be paid in cash from our existing balances of cash and cash equivalents.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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