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Significant Condensed Consolidated Balance Sheet Components (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Share Repurchase Program [Line Items] |  |  |  |  |
Capitalized software development costs, net of accumulated amortization | $ 42.7 |  | $ 42.7 |  | $ 49.0
Capitalized software development costs | 5.7 | $ 7.9 | 19.0 | $ 25.7 |
Amortization of capitalized software | 9.0 | $ 7.3 | 25.3 | 20.9 |
Strategic investment of equity securities |  |  | 8.1 |  |
Equity investments without readily determinable fair values | $ 8.1 |  | $ 8.1 |  |
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Accrued expenses and other current liabilities |  | Accrued expenses and other current liabilities |  | Accrued expenses and other current liabilities
Accrued expenses and other current liabilities including unbilled accounts payable | $ 42.0 |  | $ 42.0 |  | $ 21.2
Accrued expenses and other current liabilities including operating lease liabilities | $ 2.8 |  | 2.8 |  | $ 3.4
Repurchases of Class A common stock recorded in accrued expenses and other current liabilities |  |  | $ 2.4 | $ 0.0 |
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other liabilities—noncurrent |  | Other liabilities—noncurrent |  | Other liabilities—noncurrent
Other liabilities noncurrent including operating lease liabilities | $ 4.1 |  | $ 4.1 |  | $ 6.2
Accrued Liabilities and Other Liabilities |  |  |  |  |
Share Repurchase Program [Line Items] |  |  |  |  |
Repurchases of Class A common stock recorded in accrued expenses and other current liabilities |  |  | $ 2.4 |  |

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