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Reinsurance - Narrative (Details) $ in Millions	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Effects of Reinsurance [Line Items]
Provision for sliding scale commission	$ 27.8	$ 34.2
Receivable for sliding scale commission	14.7	3.6
Provision for loss participation feature	$ 33.7	$ 41.6
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]: 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 Excess of Loss Catastrophe Coverage
Effects of Reinsurance [Line Items]
Excess retention, year return period, ratio	0.004

X

- Definition

Provision for Loss Participation Feature

+ References

No definition available.

+ Details

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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

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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

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Namespace Prefix:	hippo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Reinsurance Retention Policy, Excess Retention, Year Return Period Ratio

+ References

No definition available.

+ Details

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Namespace Prefix:	hippo_
Data Type:	xbrli:pureItemType
Balance Type:	na
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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

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X

- Details

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Namespace Prefix:
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X

- Details

Name:	us-gaap_ReinsuranceContractAxis=Other Reinsurance - Corporate Catastrophe Excess of Loss Catastrophe Coverage
Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ReinsuranceContractAxis=Other Reinsurance - Corporate Excess of Loss Catastrophe Coverage
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