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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 |

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- References No definition available. + Details
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