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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021
Share-based Compensation Arrangements |  |  |  |
Common stock, shares issued (in shares) | 50,771,000 |  |  |
Options outstanding and exercisable, aggregate intrinsic value | $ 144.0 |  |  |
Options outstanding, aggregate intrinsic value | 169.5 |  |  |
Options exercised in the period, intrinsic value | 15.4 | $ 29.8 |  |
Options vested in the period, fair value | 5.8 | $ 4.8 |  |
Unrecognized compensation cost | $ 10.9 |  |  |
Average vesting period for unrecognized compensation cost (in years) | 2 years 4 months 24 days |  |  |
Common stock options |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Options outstanding (in shares) | 5,215,000 | 5,353,000 |  |
Restricted stock units |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Weighted average grant date fair value (in dollars per share) | $ 21.02 | $ 19.15 |  |
Unrecognized compensation cost | $ 46.0 |  |  |
Weighted average grant date fair value (in dollars per share) | $ 36.16 | $ 36.23 |  |
Intrinsic value of RSU's outstanding | $ 65.6 |  |  |
Remaining contractual term (in years) | 3 years |  |  |
2021 Equity Incentive Award Plan |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Common stock reserved for future issuance (in shares) |  |  |  | 7,729,013
2021 Equity Incentive Award Plan | Employee Stock |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Award vesting period (in years) | 4 years |  |  |
Award cliff vesting period (in years) | 1 year |  |  |
Shares available for grant (in shares) | 5,200,000 |  |  |
Options outstanding (in shares) | 2,300,000 |  |  |
2021 Equity Incentive Award Plan | Incentive stock options and nonqualified stock options | Minimum |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Purchase price of common stock, percent | 110.00% |  |  |
2021 Equity Incentive Award Plan | Incentive stock options and nonqualified stock options | Minimum | Shareholder of Ten Percent Ownership or Greater |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Ownership interest, percent | 10.00% |  |  |
2021 Equity Incentive Award Plan | Follow-On Options |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Award vesting period (in years) | 4 years |  |  |
2021 Equity Incentive Award Plan | Common stock options |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Award contractual life (in years) | 10 years |  |  |
Purchase price of common stock, percent | 100.00% |  |  |
2021 Equity Incentive Award Plan | Restricted stock units |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Award vesting period (in years) | 4 years |  |  |
2008 Stock Plan | Common stock options |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Options outstanding (in shares) | 4,500,000 |  |  |
Employee stock purchase plan |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Common stock reserved for future issuance (in shares) |  |  |  | 412,988
Shares available for grant (in shares) | 1,100,000 |  | 0 |
Percentage of outstanding stock maximum | 1.00% |  |  |
Common stock, shares issued (in shares) | 245,000 |  |  |
Unrecognized compensation cost | $ 0.8 |  |  |
Average vesting period for unrecognized compensation cost (in years) | 4 months 24 days |  |  |
Employee stock purchase plan | Maximum |  |  |  |
Share-based Compensation Arrangements |  |  |  |
Common stock reserved for future issuance (in shares) | 10,526,315 |  |  |

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Data Type: | na
Balance Type: |
Period Type: |