XML 64 R54.htm IDEA: XBRL DOCUMENT
v3.23.3

Reinsurance - Narrative (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2023 USD ($) reinsurer | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) reinsurer | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 reinsurer
Effects of Reinsurance [Line Items] |  |  |  |  |  |
Loss on uncollectible accounts in period | $ 0 | $ 0 | $ 0 | $ 0 |  |
Provision for sliding scale commission | 15,600,000 |  | 15,600,000 |  | $ 3,500,000 |
Receivable for sliding scale commission | 5,400,000 |  | 5,400,000 |  | 4,500,000 |
Provision for loss participation feature | $ 106,000,000 |  | $ 106,000,000 |  | $ 51,300,000 |
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 |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |
Excess retention, year return period, ratio | 0.004 |  | 0.004 |  |  |
Reinsurance Policy, Type [Axis]: Non-Proportional Reinsurance | Maximum |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |
Excess retention, percentage (as a percent) |  |  | 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 Catastrophe 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 |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |
Reinsured risk, percentage (as a percent) |  |  | 40.00% |  | 10.00% | 12.00%
Number of reinsurers | reinsurer |  |  |  |  |  | 2
Percentage attributable to program (as a percent) |  |  |  |  |  | 33.00%
Agreement term (in years) |  |  |  |  |  | 3 years
Reinsurance Policy, Type [Axis]: Proportional Reinsurance Treaties, Business Channel |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |
Reinsured risk, percentage (as a percent) |  |  | 58.00% |  |  |
Reinsurance, number of third-party reinsurers | reinsurer | 3 |  | 3 |  |  |

X
- Definition Provision for Loss Participation Feature + References No definition available. + Details
Name: | hippo_ProvisionForLossParticipationFeature
Namespace Prefix: | hippo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Provision for Sliding Scale Commission + References No definition available. + Details
Name: | hippo_ProvisionForSlidingScaleCommission
Namespace Prefix: | hippo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Receivable for Sliding Scale Commission + References No definition available. + Details
Name: | hippo_ReceivableForSlidingScaleCommission
Namespace Prefix: | hippo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reinsurance, Agreement Term + References No definition available. + Details
Name: | hippo_ReinsuranceAgreementTerm
Namespace Prefix: | hippo_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reinsurance, Number of Reinsurers + References No definition available. + Details
Name: | hippo_ReinsuranceNumberOfReinsurers
Namespace Prefix: | hippo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Reinsurance, Number of Third-Party Reinsurers + References No definition available. + Details
Name: | hippo_ReinsuranceNumberOfThirdPartyReinsurers
Namespace Prefix: | hippo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Reinsurance, Percentage Attributable To Program + References No definition available. + Details
Name: | hippo_ReinsurancePercentageAttributableToProgram
Namespace Prefix: | hippo_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Reinsurance, Reimbursement Protection, Percentage + References No definition available. + Details
Name: | hippo_ReinsuranceReimbursementProtectionPercentage
Namespace Prefix: | hippo_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Reinsurance Retention Policy, Ceded Risk, Percentage + References No definition available. + Details
Name: | hippo_ReinsuranceRetentionPolicyCededRiskPercentage
Namespace Prefix: | hippo_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reinsurance Retention Policy, Excess Retention, Year Return Period Ratio + References No definition available. + Details
Name: | hippo_ReinsuranceRetentionPolicyExcessRetentionYearReturnPeriodRatio
Namespace Prefix: | hippo_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_EffectsOfReinsuranceLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ReinsuranceLossOnUncollectibleAccountsInPeriodAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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
Name: | us-gaap_ReinsuranceRetentionPolicyExcessRetentionPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ReinsuranceRetentionPolicyReinsuredRiskPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=hippo_FloridaHurricaneCatastropheFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_FL
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReinsuranceContractAxis=Non-Proportional Reinsurance
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReinsuranceContractAxis=Other Reinsurance - Corporate Catastrophe Excess of Loss Catastrophe Coverage
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReinsuranceContractAxis=Other Reinsurance - Proportional and Excess of Loss Catastrophe Coverage
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReinsuranceContractAxis=Proportional Reinsurance Treaties
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReinsuranceContractAxis=Proportional Reinsurance Treaties, Business Channel
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |