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Loss and Loss Adjustment Expense Reserves - Incurred and Paid Claims Development (Details) $ in Millions | Dec. 31, 2023 USD ($) claim | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
--- | --- | --- | --- | --- | ---
Insurance-as-a-Service |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 45.1 |  |  |  |
IBNR | $ 6.4 |  |  |  |
Cumulative Number of Reported Claims | claim | 84,913 |  |  |  |
Hippo Home Insurance Program |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 313.4 |  |  |  |
IBNR | $ 66.0 |  |  |  |
Cumulative Number of Reported Claims | claim | 90,175 |  |  |  |
2019 | Insurance-as-a-Service |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 4.9 | $ 4.8 | $ 4.7 | $ 4.8 | $ 4.8
IBNR | $ 0.0 |  |  |  |
Cumulative Number of Reported Claims | claim | 7,963 |  |  |  |
2019 | Hippo Home Insurance Program |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 0.0 | 0.0 | 0.0 | 0.0 | $ 0.0
IBNR | $ 0.0 |  |  |  |
Cumulative Number of Reported Claims | claim | 6,973 |  |  |  |
2020 | Insurance-as-a-Service |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 8.9 | 9.3 | 7.4 | 7.6 |
IBNR | $ 0.1 |  |  |  |
Cumulative Number of Reported Claims | claim | 16,667 |  |  |  |
2020 | Hippo Home Insurance Program |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 20.7 | 20.6 | 20.7 | $ 20.9 |
IBNR | $ 0.2 |  |  |  |
Cumulative Number of Reported Claims | claim | 13,555 |  |  |  |
2021 | Insurance-as-a-Service |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 3.5 | 3.8 | 6.9 |  |
IBNR | $ 0.2 |  |  |  |
Cumulative Number of Reported Claims | claim | 16,481 |  |  |  |
2021 | Hippo Home Insurance Program |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 58.0 | 59.7 | $ 69.9 |  |
IBNR | $ 2.6 |  |  |  |
Cumulative Number of Reported Claims | claim | 24,459 |  |  |  |
2022 | Insurance-as-a-Service |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 12.4 | 13.7 |  |  |
IBNR | $ 0.8 |  |  |  |
Cumulative Number of Reported Claims | claim | 21,422 |  |  |  |
2022 | Hippo Home Insurance Program |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 81.5 | $ 80.6 |  |  |
IBNR | $ 30.3 |  |  |  |
Cumulative Number of Reported Claims | claim | 24,109 |  |  |  |
2023 | Insurance-as-a-Service |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 15.4 |  |  |  |
IBNR | $ 5.3 |  |  |  |
Cumulative Number of Reported Claims | claim | 22,380 |  |  |  |
2023 | Hippo Home Insurance Program |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Cumulative Paid Losses and Allocated LAE, Net | $ 153.2 |  |  |  |
IBNR | $ 32.9 |  |  |  |
Cumulative Number of Reported Claims | claim | 21,079 |  |  |  |

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