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Stock-Based Compensation - Additional Information (Details) - USD ($) |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 02, 2024 | Dec. 31, 2024 | Jan. 31, 2025 | Jan. 31, 2024 | Jan. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Aggregate intrinsic value of exercised options |  |  | $ 14,800,000 | $ 1,600,000 | $ 60,000,000
Tax benefits realized from stock options exercise |  |  | $ 2,200,000 |  |
Aggregate estimated fair value of stock options granted to employees vested |  |  |  | $ 0 | $ 0
Options granted to employees |  |  | 0 | 0 | 0
Share-based compensation expense |  |  | $ 219,003,000 | $ 198,783,000 | $ 185,632,000
Stock options, vested in period |  |  | 0 |  |
Restricted Stock Units |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Fair value of vested restricted stock units |  |  | $ 226,900,000 | $ 214,600,000 | 215,300,000
Tax benefit from vesting and issuance of restricted stock units |  |  | 42,100,000 |  |
Unrecognized stock-based compensation expense |  |  | $ 370,700,000 |  |
Remaining weighted-average period |  |  | 2 years 6 months 21 days |  |
Share based compensation, average grant date fair value |  |  | $ 29.05 | $ 26.34 |
Number of market based restricted stock units granted |  |  | 10,058,585 | 8,966,588 |
Employee Stock Option |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Dividend yield |  |  | 0.00% |  |
Market-Based Restricted Stock Units |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Share based compensation, average grant date fair value |  |  | $ 20.59 |  |
Number of market based restricted stock units granted |  | 600,000 |  |  |
Performance-Based Restricted Stock Units |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting period |  |  | 3 years |  |
Performance-Based Restricted Stock Units | Maximum |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Target number of shares earned ranges, percentage |  |  | 150.00% |  |
Performance-Based Restricted Stock Units | Minimum |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Target number of shares earned ranges, percentage |  |  | 0.00% |  |
Performance Based and Market Based Restricted Stock Units |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  |  | $ 5,500,000 | $ 2,800,000 | 1,300,000
Capitalized Internal-use Software costs |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  |  | $ 10,600,000 | $ 7,000,000 | $ 4,400,000
2015 Equity Incentive Plan | Restricted Stock Units |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting period |  |  | 4 years |  |
2015 Equity Incentive Plan | Class A Common Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Shares common stock reserved for issuance |  |  | 8,594,162 |  |
2015 Employee Stock Purchase Plan |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Percentage of eligible compensation allowed to employees to purchase shares at a discount |  |  |  | 15.00% |
Description of offering period excluding initial offering period |  |  |  | The 2015 ESPP provides for 24-month offering periods beginning March 16 and September 16 of each year, and each offering period consists of four six-month purchase periods. |
Purchase price of common stock, percentage |  |  |  | 85.00% |
Description of offering period resets |  |  |  | the offering period resets and the new lower price becomes the new offering price for a new 24 month offering period. |
Unrecognized stock-based compensation expense |  |  |  | $ 5,500,000 |
Dividend yield |  |  | 0.00% | 0.00% | 0.00%
2015 Employee Stock Purchase Plan | Maximum |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Remaining weighted-average period |  |  | 1 year |  |
Number of additional shares to be issued | 20,228,040 |  |  |  |
2015 Employee Stock Purchase Plan | Class A Common Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Shares common stock reserved for issuance |  |  | 2,823,385 |  |
Number of shares to be issued | 9,000,000 |  |  |  |
Executive Bonus Plans | Performance-Based Restricted Stock Units |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  |  | $ 13,400,000 | $ 6,200,000 |
Fiscal 2024 Executive Bonus Plan | Performance-Based Restricted Stock Units |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Unrecognized stock-based compensation expense |  |  | $ 3,100,000 |  |
One Year from Vesting Commencement Date | 2015 Equity Incentive Plan | Restricted Stock Units |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting percentage |  |  | 25.00% |  |
Per Month after One Year of Vesting Commencement Date | 2015 Equity Incentive Plan | Restricted Stock Units |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting percentage |  |  | 6.25% |  |
Per Quarter after One Year of Vesting Commencement Date | 2015 Equity Incentive Plan | Restricted Stock Units |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting percentage |  |  | 6.25% |  |

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