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Investments - Narrative (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Investment Holdings [Line Items] |  |
Securities lending rate of collateral required | 1.02 |
Fixed-maturities available for sale | Debt Securities |  |
Investment Holdings [Line Items] |  |
Assets held by insurance regulators | $ 13.3 | $ 14.3
Foreign government and agency securities |  |
Investment Holdings [Line Items] |  |
Securities lending rate of collateral required | 1.05 |
Loaned securities |  |
Investment Holdings [Line Items] |  |
Securities lending rate of collateral required | 1 |
Securities received as collateral | $ 16.2 | $ 57.8

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