Policyholder Obligations - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Policyholder Account Balance, Weighted Average Crediting Rate	5.10%		5.10%
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Net	$ 280.8	$ 294.1
Policyholder Account Balance, Cash Surrender Value	97.0	$ 98.2
United Insurance Company of America \| Federal Home Loan Bank of Chicago
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, amount of advances	62.4
Payments of FHLBank borrowings	$ 98.4

Amount of cash to be paid to policyholder upon termination and surrender of long-duration contract issued by insurance entity.

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Amount of advance from Federal Home Loan Bank (FHLBank).

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Amount of expected guaranteed benefits in excess of the projected account balances for minimum guaranteed benefit contracts, net of reinsurance recoverables, as of the balance sheet date.

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Weighted-average crediting rate for liability for policyholder account balance, calculated at a point in time.

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Amount of cash outflow for repayment of Federal Home Loan Bank (FHLBank) borrowing, classified as financing activity.

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