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Reinsurance - Narrative (Details) | 12 Months Ended
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Dec. 31, 2023 USD ($) reinsurer | Dec. 31, 2022 USD ($) | Dec. 31, 2021 reinsurer
Effects of Reinsurance [Line Items] |  |  |
Loss on uncollectible accounts in period | $ 0 | $ 0 |
Provision for sliding scale commission | 23,800,000 | 3,500,000 |
Receivable for sliding scale commission | 5,800,000 | 4,500,000 |
Provision for loss participation feature | $ 112,800,000 | $ 51,300,000 |
Maximum | Florida Hurricane Catastrophe Fund | Florida |  |  |
Effects of Reinsurance [Line Items] |  |  |
Reinsurance, reimbursement protection, percentage | 90.00% |  |
Reinsurance Policy, Type [Axis]: Non-Proportional Reinsurance — Hippo Home Insurance Program |  |  |
Effects of Reinsurance [Line Items] |  |  |
Excess retention, year return period, ratio | 0.004 |  |
Reinsurance Policy, Type [Axis]: Non-Proportional Reinsurance — Hippo Home Insurance Program | Maximum |  |  |
Effects of Reinsurance [Line Items] |  |  |
Excess retention, percentage | 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 |  |
Reinsurance Policy, Type [Axis]: Other Reinsurance - Corporate Catastrophe Excess of Loss Catastrophe Coverage | Maximum |  |  |
Effects of Reinsurance [Line Items] |  |  |
Excess retention, percentage | 0.40% |  |
Reinsurance Policy, Type [Axis]: Other Reinsurance - Proportional and Excess of Loss Catastrophe Coverage | Maximum |  |  |
Effects of Reinsurance [Line Items] |  |  |
Ceded risk, percentage | 100.00% |  |
Reinsurance Policy, Type [Axis]: Other Reinsurance - Proportional and Excess of Loss Catastrophe Coverage | Minimum |  |  |
Effects of Reinsurance [Line Items] |  |  |
Ceded risk, percentage | 75.00% |  |
Reinsurance Policy, Type [Axis]: Proportional Reinsurance Treaties — Hippo Home Insurance Program |  |  |
Effects of Reinsurance [Line Items] |  |  |
Reinsured risk, percentage | 40.00% | 10.00% | 12.00%
Number of reinsurers | reinsurer |  |  | 2
Percentage attributable to program |  |  | 33.00%
Agreement term (in years) |  |  | 3 years
Reinsurance Policy, Type [Axis]: Proportional Reinsurance Treaties — Hippo Home Insurance Program, Business Channel |  |  |
Effects of Reinsurance [Line Items] |  |  |
Reinsured risk, percentage | 58.00% |  |
Reinsurance, number of third-party reinsurers | reinsurer | 3 |  |

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- Definition Provision for Loss Participation Feature + References No definition available. + Details
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- Definition Provision for Sliding Scale Commission + References No definition available. + Details
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- Definition Receivable for Sliding Scale Commission + References No definition available. + Details
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- Definition Reinsurance, Agreement Term + References No definition available. + Details
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- Definition Reinsurance, Number of Reinsurers + References No definition available. + Details
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- Definition Reinsurance, Number of Third-Party Reinsurers + References No definition available. + Details
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- Definition Reinsurance Retention Policy, Ceded Risk, Percentage + References No definition available. + Details
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- Definition Amount of the write-down or write-off of a receivable from a reinsurer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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- Definition Percentage of risk ceded to reinsurer in excess of risk undertaken originally by insurer that is not ceded to reinsurer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479838/944-20-50-3 + Details
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- Definition Percentage of risk undertaken originally by insurer ceded to reinsurer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479838/944-20-50-3 + Details
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