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Reinsurance - Narrative (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2024 USD ($) reinsurer | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) reinsurer | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) reinsurer | Dec. 31, 2022 reinsurer | Jan. 01, 2024
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |
Loss on uncollectible accounts in period | $ 0 | $ 0 | $ 0 | $ 0 |  |  |
Provision for sliding scale commission | 31,100,000 |  | 31,100,000 |  | $ 23,800,000 |  |
Receivable for sliding scale commission | 2,500,000 |  | 2,500,000 |  | 5,800,000 |  |
Provision for loss participation feature | $ 42,200,000 |  | $ 42,200,000 |  | $ 112,800,000 |  |
Maximum | Florida Hurricane Catastrophe Fund | Florida |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |
Reimbursement protection, percentage (as a percent) | 90.00% |  | 90.00% |  |  |  |
Reinsurance Policy, Type [Axis]: Non-Proportional Reinsurance — Hippo Home Insurance Program |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |
Reinsurance, number of participating reinsurers | reinsurer | 19 |  | 19 |  | 14 |  |
Excess retention, year return period, ratio | 0.004 |  | 0.004 |  |  |  |
Reinsurance Policy, Type [Axis]: Non-Proportional Reinsurance — Hippo Home Insurance Program | Maximum |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |
Excess retention, percentage (as a percent) |  |  | 11.00% |  | 0.40% |  |
Reinsurance Policy, Type [Axis]: Other Reinsurance - Corporate Catastrophe Excess of Loss Catastrophe Coverage |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |
Excess retention, year return period, ratio | 0.004 |  | 0.004 |  |  |  |
Reinsurance Policy, Type [Axis]: Other Reinsurance - Corporate Excess of Loss Catastrophe Coverage |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |
Excess retention, year return period, ratio | 0.004 |  | 0.004 |  |  |  |
Reinsurance Policy, Type [Axis]: Other Reinsurance - Corporate Excess of Loss Catastrophe Coverage | Maximum |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |
Excess retention, percentage (as a percent) |  |  |  | 0.40% |  |  |
Reinsurance Policy, Type [Axis]: Other Reinsurance - Proportional and Excess of Loss Catastrophe Coverage | Maximum |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |
Ceded risk, percentage (as a percent) |  |  | 100.00% |  |  |  |
Reinsurance Policy, Type [Axis]: Other Reinsurance - Proportional and Excess of Loss Catastrophe Coverage | Minimum |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |
Ceded risk, percentage (as a percent) |  |  | 75.00% |  |  |  |
Reinsurance Policy, Type [Axis]: Proportional Reinsurance Treaties — Hippo Home Insurance Program |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |
Reinsurance, number of third-party reinsurers | reinsurer |  |  |  |  | 6 | 11 |
Reinsured risk, percentage (as a percent) |  |  |  |  | 40.00% | 10.00% |
Reinsured risk, cut off percentage (as a percent) |  |  |  |  |  |  | 25.00%
Reinsurance Policy, Type [Axis]: Proportional Reinsurance Treaties — Hippo Home Insurance Program, Business Channel |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |
Reinsurance, number of third-party reinsurers | reinsurer | 1 |  | 1 |  | 3 |  |
Reinsured risk, percentage (as a percent) |  |  | 85.00% |  | 58.00% |  |

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