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Employee Incentive Plans - Narrative (Details) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 $ / shares shares | Jan. 31, 2023 USD ($) offering_period numberOfIncentivePlan $ / shares shares | Jan. 31, 2022 USD ($) $ / shares shares | Jan. 31, 2021 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of equity incentive plans | numberOfIncentivePlan |  | 2 |  |
Options to purchase common stock outstanding (in shares) | shares |  | 6,353,000 | 7,984,000 |
Number of options, granted (in shares) | shares |  | 0 |  |
Weighted average grant date fair value of options granted (in dollars per share) | $ / shares |  |  | $ 211.58 | $ 63.32
Grant date fair value of vested stock options |  | $ 104 | $ 314 | $ 20
Intrinsic value of options exercised |  | 108 | 545 | 772
Unrecognized stock-based compensation expense |  | 90 | 210 |
Issuance of common stock under employee stock purchase plan, net of cancellations |  | 31 | $ 36 | 26
Defined contribution plan, employer contribution amount |  | $ 21 |  |
Stock options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Expiration period (years) |  | 10 years |  |
Vesting period |  | 4 years |  |
Weighted average stock-based compensation recognition period |  | 1 year 9 months 18 days | 1 year 9 months 18 days |
RSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Weighted average stock-based compensation recognition period |  | 3 years |  |
Granted during period (in shares) | shares |  | 7,194,187 |  |
Shares issued fair value |  | $ 805 |  |
Unrecognized compensation costs related to unvested restricted stock units |  | 1,200 | $ 1,152 |
Fair value of units vested |  | $ 229 | 531 | $ 410
Granted during period (in dollars per share) | $ / shares |  | $ 111.84 |  |
ESPP |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Weighted average stock-based compensation recognition period |  | 8 months 12 days |  |
Unrecognized compensation costs related to unvested restricted stock units |  | $ 26 | $ 17 |
ESPP offering period |  | 12 months |  |
Number of offering periods | offering_period |  | 2 |  |
ESPP length of purchase period |  | 6 months |  |
Number of shares issued under ESPP | shares |  | 491,965 | 185,707 |
Weighted average price, shares issued under ESPP (in dollars per share) | $ / shares |  | $ 63.97 | $ 191.54 |
Market-Based RSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period | 3 years |  |  |
Granted during period (in shares) | shares | 58,150 |  |  |
Granted during period (in dollars per share) | $ / shares | $ 244.73 |  |  |
Unvested restricted stock awards issued and outstanding | Auth0 and atSpoke |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  | 3 years |  |
Weighted average stock-based compensation recognition period |  | 1 year 3 months 18 days |  |
Granted during period (in shares) | shares |  | 1,269,008 |  |
Unrecognized compensation costs related to unvested restricted stock units |  | $ 141 |  |
Granted during period (in dollars per share) | $ / shares |  | $ 268.98 |  |
Minimum | Market-Based RSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Earn rate, percent of shares granted | 0.00% |  |  |
Maximum | Market-Based RSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Earn rate, percent of shares granted | 200.00% |  |  |
2017 Equity Incentive Plan | Class A Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options to purchase common stock outstanding (in shares) | shares |  | 1,758,264 |  |
2017 Equity Incentive Plan | Class B Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options to purchase common stock outstanding (in shares) | shares |  | 4,594,675 |  |
Vesting tranche one | Stock options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period |  | 1 year |  |
Vesting percentage earned by employees after each completed year of service |  | 25.00% |  |
Vesting tranche one | Market-Based RSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting percentage earned by employees after each completed year of service | 33.00% |  |  |
Vesting tranche one | Market-Based RSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting percentage earned by employees after each completed year of service | 33.00% |  |  |
Vesting tranche one | Market-Based RSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting percentage earned by employees after each completed year of service | 33.00% |  |  |

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