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Acquisition of Metromile - Additional Information (Details) $ in Millions |  | 2 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Jul. 28, 2022 shares | Sep. 30, 2022 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($)
Business Acquisition [Line Items] |  |  |  |  |
Business acquisition, pro forma revenue |  |  | $ 85.1 |  | $ 221.1
Net Loss |  |  | (112.2) |  | (316.8)
Metromile |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Percent of equity acquired | 100.00% |  |  |  |
Conversion ratio | 0.05263 |  |  |  |
Shares issued for acquisition (in shares) | shares | 6,901,934 |  |  |  |
Business acquisition, pro forma revenue |  | $ 15.1 |  | $ 57.9 |
Net Loss |  | $ 20.7 |  | $ (24.7) |
Transaction expenses |  |  | $ 7.4 |  | $ 8.4

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