Number of shares of equity interests issued or issuable to acquire entity.

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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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Amount of cost to be recognized for option under share-based payment arrangement.

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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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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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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

Number of options outstanding, including both vested and non-vested options.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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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

Number of share options (or share units) exercised during the current period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Stock-Based Compensation - 2011 Stock Incentive Plan Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended	6 Months Ended
	Feb. 06, 2021	Jul. 31, 2021	Jul. 31, 2021	Jan. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares)		48,385,470	48,385,470	37,231,191
2011 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, outstanding, weighted average exercise price (in USD per share)		$ 1.72	$ 1.72
Stock options outstanding (in shares)		755,368	755,368
Options, vested and exercisable, number (in shares)		96,579	96,579
Options, vested and exercisable, weighted average exercise price (in USD per share)		$ 1.72	$ 1.72
Vesting of early exercised options		$ 4.7	$ 8.7
Cost not yet recognized, options, amount		$ 6.7	$ 6.7
Options exercised (in shares)		266,980	1,328,595
Options, exercises in period, intrinsic value		$ 7.0	$ 22.7
2011 Stock Incentive Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost not yet recognized, period for recognition			1 year 1 month 6 days
Scalyr \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Consideration transferred, equity interests (in shares)	2,138,347
Scalyr \| 2011 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, outstanding, weighted average exercise price (in USD per share)	$ 1.74
Weighted average grant date fair value (in USD per share)	$ 13.10
Scalyr \| 2011 Stock Incentive Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Consideration transferred, equity interests (in shares)	2,138,347