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v3.21.1

Employee Benefit Plan (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2021 | Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019
Postemployment Benefits [Abstract] |  |  |  |
Percentage of participant's contribution matched by employer | 50.00% |  |  |
Employer matching contribution, maximum percentage of participant's base salary | 6.00% |  |  |
Defined contribution plan expense |  | $ 18.9 | $ 11.0 | $ 1.7

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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- References No definition available. + Details
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