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Mortgage Loans, Allowance for Credit Losses Rollforward (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss Rollforward, Mortgage Loans |  |  |  |  |
Current Period Provisions | $ 1.4 | $ 1.1 | $ 1.9 | $ 1.8 |
Write-offs |  |  | 0.0 |  | $ 0.0
Commercial Real Estate |  |  |  |  |
Financing Receivable, Allowance for Credit Loss Rollforward, Mortgage Loans |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance |  |  | 10.2 |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 12.1 |  | 12.1 |  | 10.2
Commercial Real Estate | Loan to Value Ratio Below or Equal to 65 Percent |  |  |  |  |
Financing Receivable, Allowance for Credit Loss Rollforward, Mortgage Loans |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 3.6 | 3.0 | 3.8 | 3.0 | 3.0
Current Period Provisions | 0.1 | 0.3 | (0.1) | 0.3 |
Write-offs | 0.0 | 0.0 | 0.0 | 0.0 |
Recoveries | 0.0 | 0.0 | 0.0 | 0.0 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 3.7 | 3.3 | 3.7 | 3.3 | 3.8
Commercial Real Estate | Loan To Value Ratio Above 65 To 75 Percent |  |  |  |  |
Financing Receivable, Allowance for Credit Loss Rollforward, Mortgage Loans |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 3.4 | 5.3 | 3.8 | 4.7 | 4.7
Current Period Provisions | (0.1) | (0.5) | (0.5) | 0.1 |
Write-offs | 0.0 | 0.0 | 0.0 | 0.0 |
Recoveries | 0.0 | 0.0 | 0.0 | 0.0 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 3.3 | 4.8 | 3.3 | 4.8 | 3.8
Commercial Real Estate | Loan To Value Ratio Above 75 To 85 Percent |  |  |  |  |
Financing Receivable, Allowance for Credit Loss Rollforward, Mortgage Loans |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 1.2 | 1.2 | 1.2 | 1.1 | 1.1
Current Period Provisions | 0.5 | (0.3) | 0.5 | (0.2) |
Write-offs | 0.0 | 0.0 | 0.0 | 0.0 |
Recoveries | 0.0 | 0.0 | 0.0 | 0.0 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 1.7 | 0.9 | 1.7 | 0.9 | 1.2
Commercial Real Estate | Loan To Value Ratio Above 85 Percent |  |  |  |  |
Financing Receivable, Allowance for Credit Loss Rollforward, Mortgage Loans |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 2.5 | 0.5 | 1.4 | 0.5 | 0.5
Current Period Provisions | 0.9 | 1.6 | 2.0 | 1.6 |
Write-offs | 0.0 | 0.0 | 0.0 | 0.0 |
Recoveries | 0.0 | 0.0 | 0.0 | 0.0 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 3.4 | 2.1 | 3.4 | 2.1 | 1.4
Commercial Real Estate | Loan to Value Ratio Total |  |  |  |  |
Financing Receivable, Allowance for Credit Loss Rollforward, Mortgage Loans |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 10.7 | 10.0 | 10.2 | 9.3 | 9.3
Current Period Provisions | 1.4 | 1.1 | 1.9 | 1.8 |
Write-offs | 0.0 | 0.0 | 0.0 | 0.0 |
Recoveries | 0.0 | 0.0 | 0.0 | 0.0 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | $ 12.1 | $ 11.1 | $ 12.1 | $ 11.1 | $ 10.2

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