XML 54 R43.htm IDEA: XBRL DOCUMENT

Operating Leases - Additional Information (Details) $ in Millions	3 Months Ended
	Apr. 30, 2019 USD ($)	Apr. 30, 2018 USD ($)	Oct. 31, 2017 ft²
Leases [Abstract]
Operating lease, description	The Company leases its headquarters located in Sunnyvale, California, as well as office and data center space in various locations under non-cancelable operating lease agreements, with expiration dates between calendar years 2019 and 2023.
Operating lease, expiration date beginning period	2019
Operating lease, expiration date ending period	2023
Leases not yet commenced, description	The Company has no leases that have not yet commenced as of April 30, 2019.
Lease rentable space of office building \| ft²			33,400
Sublease cost \| $	$ 0.3	$ 0.2