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Equity Compensation - Additional Information (Details) |  |  | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Oct. 29, 2021 trading_day shares | May 11, 2021 USD ($) | Oct. 31, 2021 USD ($) shares | Oct. 31, 2020 USD ($) | Apr. 30, 2020 USD ($) | Jul. 31, 2021 USD ($) | Oct. 31, 2021 USD ($) period shares | Oct. 31, 2020 USD ($) | Jan. 31, 2021 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Allocated share-based compensation expense |  |  | $ 143,700,000 | $ 97,400,000 |  |  | $ 412,700,000 | $ 291,500,000 |
Settlement of liability-classified restricted stock units |  |  | $ 2,700,000 |  | $ 28,700,000 |  | 2,700,000 | 28,700,000 |
Market capitalization |  |  |  |  |  |  | $ 2,000,000,000 |  |
Award vesting period |  |  |  |  |  |  | 1 year |  |
Fair value of common stock issued related to business combination |  |  |  |  |  |  | $ 2,600,000 | $ 0 |
Consecutive trading days | trading_day | 90 |  |  |  |  |  |  |  |
Expected dividend yield (in percentage) |  |  |  |  |  |  | 0.00% |  |
1998 Employee Qualified Stock Purchase Plan |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Percentage of compensation that eligible employees can use to purchase common stock, maximum |  |  |  |  |  |  | 15.00% |  |
Percentage of fair market value eligible employees can purchase common stock, minimum |  |  |  |  |  |  | 85.00% |  |
Number of exercise period | period |  |  |  |  |  |  | 4 |  |
Term of exercise period |  |  |  |  |  |  | 6 months |  |
Term of offering period |  |  |  |  |  |  | 24 months |  |
Expected dividend yield (in percentage) |  |  | 0.00% | 0.00% |  |  | 0.00% | 0.00% |
Upchain |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Allocated share-based compensation expense |  |  |  |  |  | $ 3,100,000 |  |  |
Fair value of common stock issued related to business combination |  | $ 13,100,000 |  |  |  |  |  |  |
Business acquisition, equity interest issued or issuable, number of shares (in shares) | shares | 43,000 |  |  |  |  |  |  |  |
Share-based Compensation Award, Tranche One | Upchain |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
PSU annual vesting percentage (in percentage) |  | 40.00% |  |  |  |  |  |  |
Share-based Compensation Award, Tranche Two | Upchain |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
PSU annual vesting percentage (in percentage) |  | 60.00% |  |  |  |  |  |  |
Common stock and additional paid-in capital |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Settlement of liability-classified restricted stock units |  |  |  |  | $ 28,700,000 |  | $ 2,700,000 | $ 28,700,000 |
Restricted Stock Units (RSUs) and Performance Shares |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Awards vested in period, fair value |  |  |  |  |  |  | $ 516,500,000 | 400,600,000 |
Awards granted in period (in shares) | shares |  |  |  |  |  |  | 1,895,000 |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Awards granted in period (in shares) | shares |  |  |  |  |  |  | 1,600,000 |  |
Allocated share-based compensation expense |  |  | $ 109,900,000 | $ 74,700,000 |  |  | $ 314,400,000 | 222,900,000 |
Performance Stock Units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Awards granted in period (in shares) | shares |  |  |  |  |  |  | 200,000 |  |
Allocated share-based compensation expense |  |  | 18,100,000 | 8,700,000 |  |  | $ 50,100,000 | $ 26,200,000 |
Award vesting period |  |  |  |  |  |  | 3 years |  |
Expected dividend yield (in percentage) |  |  |  |  |  |  | 0.00% | 0.00% |
Performance Stock Units | Certain Employees |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Awards granted in period (in shares) | shares |  |  |  |  |  |  | 100,000 |  |
Performance Stock Units | Share-based Compensation Award, Tranche One |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
PSU annual vesting percentage (in percentage) |  |  |  |  |  |  | 33.33% |  |
Performance Stock Units | Share-based Compensation Award, Tranche Two |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
PSU annual vesting percentage (in percentage) |  |  |  |  |  |  | 33.33% |  |
Performance Stock Units | Share-based Compensation Award, Tranche Three |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
PSU annual vesting percentage (in percentage) |  |  |  |  |  |  | 33.33% |  |
Common stock |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Allocated share-based compensation expense |  |  | $ 4,700,000 | $ 0 |  |  | $ 11,600,000 | $ 0 |
Value of shares authorized |  |  |  |  |  |  |  |  | $ 4,900,000
Shares issued in period (in shares) | shares |  |  | 8,300 |  |  |  |  |  |
Value of shares issued |  |  | $ 2,700,000 |  |  |  |  |  |
Shares of common stock reserved for issuance (in shares) | shares | 8,000 |  |  |  |  |  |  |  |
Restricted Stock |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  |  | 2 years |  | 3 years
Shares issued in period (in shares) | shares |  |  |  |  |  |  | 9,277 |  | 73,632

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