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

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

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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

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Number of shares issued under share-based payment arrangement.

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Price of a single share of a number of saleable stocks of a company.

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Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

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Common Stock, Conversion Ratio

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Common stock shares outstanding percentage.

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Common Stock, Votes Per Share

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Percentage of common stock acquire to fair market value.

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Percentage of payroll deductions for shares acquire.

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Share based compensation arrangement by share based payment awards award exercisable period.

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Vote Per Common Share

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Stockholders' Equity - Additional Information (Details)	12 Months Ended
Stockholders' Equity - Additional Information (Details)	Jan. 31, 2023 USD ($) vote $ / shares shares	Jan. 31, 2022 $ / shares shares	Jan. 31, 2021 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends payable \| $	$ 0
Votes per common share \| vote	1
Options outstanding (in shares)	11,503,409	12,090,522
Unrecognized compensation cost related to unvested stock options granted \| $	$ 345,000,000
Share price (in usd per share) \| $ / shares	$ 170.55
Intrinsic value of options exercised \| $	$ 551,000,000
Class A common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares outstanding (in shares)	143,693,009	139,432,822
Vote per common share \| vote	1
Class B common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares outstanding (in shares)	14,551,598	14,763,775
Vote per common share \| vote	10
Common stock, conversion ratio	1
2007 Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	0
2021 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	0
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	0
Number of additional shares authorized (in shares)	13,750,000
Common stock, shares outstanding, percentage	5.00%
Weighted-average grant date fair value of options granted (in usd per share) \| $ / shares	$ 88.25	$ 108.42	$ 71.86
2013 Equity Incentive Plan \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued in period (in shares)	5,396,880
2013 Equity Incentive Plan \| Class A common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares)	40,161,454
2013 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares authorized (in shares)	2,200,000
Common stock, shares outstanding, percentage	1.00%
Number of shares reserved for future issuance (in shares)	4,000,000
Number of shares authorized (in shares)	4,897,856
Percent of fair market value paid for shares	85.00%
Percentage of payroll deductions for shares acquired	15.00%
2013 Employee Stock Purchase Plan \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued in period (in shares)	0
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Weighted average period of unvested stock (in years)	2 years 3 months 18 days
Unrecognized compensation cost related to unvested RSUs \| $	$ 168,000,000
Total intrinsic value, vested \| $	$ 180,000,000
Restricted Stock Units (RSUs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Restricted Stock Units (RSUs) \| 2007 Stock Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation cost recognition vesting service period	5 years
Restricted Stock Units (RSUs) \| 2007 Stock Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation cost recognition vesting service period	1 year
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Weighted average period of unvested stock (in years)	2 years 6 months
Stock Options \| 2007 Stock Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years
Options exercisable period	10 years
Share-based compensation cost recognition vesting service period	8 years
Stock Options \| 2007 Stock Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Share-based compensation cost recognition vesting service period	4 years
Stock Options \| 2013 Equity Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	9 years
Options exercisable period	10 years
Stock Options \| 2013 Equity Incentive Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years