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- Definition

Reinsurance, Ceded Commission, Percentage

+ References

No definition available.

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- Definition

Reinsurance, Profit Commission, Hurdle Rate Of Return, Percentage

+ References

No definition available.

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Reinsurance, Profit Commission, Percentage

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No definition available.

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- Definition

Related Party Transaction, Agreement Duration

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No definition available.

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- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Costs of sales and operating expenses for the period incurred from transactions with related parties.

+ References

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- Definition

The expense incurred by an insurance company to persons or entities for generating or placing insurance or investment contracts with the company, usually determined as a percentage of policy or contract premiums. Excludes advances or draws to be applied against commissions earned.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

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- Definition

Amount due from parties in nontrade transactions, classified as other.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of cash paid for commissions during the current period.

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- Definition

The percentage charged for managing real estate properties.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- 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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

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Related Party Transactions - Narrative (Details) $ in Millions		3 Months Ended		9 Months Ended
	Dec. 20, 2022	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)	Jan. 03, 2023
Related Party Transaction [Line Items]
Reinsurance, profit commission, percentage				0.200
Reinsurance, profit commission, hurdle rate of return, percentage				0.050
Related Party
Related Party Transaction [Line Items]
Other receivables		$ 320.4		$ 320.4		$ 174.8
Amounts due to The Fidelis Partnership		641.9		$ 641.9		$ 457.7
Framework Agreement \| Related Party
Related Party Transaction [Line Items]
Related party transaction, agreement duration	10 years
Reinsurance, ceded commission, percentage				0.115
Property management fee, percent fee				3.00%
Reinsurance premiums, percentage				1.00%
Insurance commissions		36.8	$ 34.4	$ 90.6	$ 89.6
Payments for commissions		28.2		63.5
Recovery of commissions			31.7		15.5
Framework Agreement \| Related Party \| Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense
Related Party Transaction [Line Items]
Costs and expenses, related party		1.6	1.2	3.9	3.0
Framework Agreement \| Related Party \| Income Statement Location [Axis]: fihl:PolicyAcquisitionExpense
Related Party Transaction [Line Items]
Insurance commissions		$ 2.7	$ 13.5	$ 9.5	$ 46.8
Framework Agreement \| Related Party \| Third Party Managing General Underwriters
Related Party Transaction [Line Items]
Reinsurance, ceded commission, percentage				0.030
Group \| Framework Agreement \| Related Party \| Fidelis MGU
Related Party Transaction [Line Items]
Subsidiary, ownership percentage, noncontrolling owner							9.90%