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Reinsurance and Indemnification - Mandatory FHCF Contracts (Details) $ in Millions | 7 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 USD ($) hurricane | Dec. 31, 2018 USD ($)
Reinsurance Retention Policy [Line Items] |  |
Number of hurricanes | hurricane | 2 |
Retention amount for catastrophe reinsurance agreement contracts |  | $ 500
Florida Excess Catastrophe Reinsurance Agreement |  |
Reinsurance Retention Policy [Line Items] |  |
Catastrophe reinsurance aggregate, loss limit per contract year, percent |  | 90.00%
Catastrophe reinsurance loss amount |  | $ 180
Catastrophe reinsurance aggregate loss limit, remaining | $ 67 | 67
Florida Excess Catastrophe Reinsurance Agreement, Two Largest Hurricanes |  |
Reinsurance Retention Policy [Line Items] |  |
Limit of aggregate losses under aggregate excess agreement | 56 |
Retention amount for catastrophe reinsurance agreement contracts | 19 |
Hurricane | Florida Excess Catastrophe Reinsurance Agreement |  |
Reinsurance Retention Policy [Line Items] |  |
Catastrophe reinsurance aggregate loss limit, exhausted | $ 113 | $ 113

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- Definition The limit of aggregated losses per contract year beyond which coverage provided by an aggregate excess agreement applies. + References No definition available. + Details
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- Definition Represents the retention amount of catastrophe reinsurance agreement contracts. + References No definition available. + Details
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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. + References No definition available. + Details
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