Capitalized Software Development Costs Excluded From Share-based Compensation Expense

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Employee Stock Purchase Plan, Increase In Number of Shares Reserved For Sale Period

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Employee Stock Purchase Plan, Number Of Purchase Periods

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Employee Stock Purchase Plan, Number Of Shares Reserved For Sale Increase Percent Of Shares Outstanding

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- Definition

Employee Stock Purchase Plan, Offering Period

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- Definition

Employee Stock Purchase Plan, Payroll Deduction Percent Of Base Cash Compensation

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Employee Stock Purchase Plan, Purchase Period

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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-Name Accounting Standards Codification
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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

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Share-Based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2022 USD ($) purchasePeriod $ / shares shares	Jan. 31, 2021 USD ($) $ / shares shares	Jan. 31, 2020 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	$ 114,900	$ 72,022	$ 37,564
Capitalized software development costs	2,000	$ 2,000
Unrecognized share based compensation expense	$ 419,000
Unrecognized share based compensation expense, period for recognition	3 years 2 months 12 days
2018 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Offering period	6 months
Number of purchase periods \| purchasePeriod	1
Purchase period	6 months
Purchase price percent	85.00%
Maximum number of shares authorized (in shares) \| shares	4,040,430	3,234,516
Share-based compensation	$ 2,700
2018 ESPP \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payroll deduction percent of base cash compensation	15.00%
Common Class A \| 2018 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period in which shares authorized increase	10 years
Common Class A \| 2018 ESPP \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares authorized (in shares) \| shares	20,400,000
Common Class A and B \| 2018 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of shares outstanding	1.00%
Stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Expiration period	10 years
Weighted average grant date fair value, stock options (in dollars per share) \| $ / shares	$ 29.71	$ 18.95	$ 17.11
Fair value of stock options vested	$ 10,100	$ 11,100	$ 11,100
Intrinsic value of options exercised	$ 141,100	$ 141,300	$ 136,600
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Weighted-average grant date fair value, RSU (in dollars per share) \| $ / shares	$ 68.21	$ 43.19	$ 41.62
Weighted-average grant date fair value, RSA (in dollars per share) \| $ / shares	$ 60.95	42.15
Restricted stock award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
RSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value, RSU (in dollars per share) \| $ / shares	$ 0
Weighted-average grant date fair value, RSA (in dollars per share) \| $ / shares	$ 46.93	$ 46.93