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v3.23.2

Investments - Narrative (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022
Schedule of Investments [Line Items] |  |
Investment grade rating | 97.20% |
Reverse repurchase agreement, cash to value percentage | 95.00% |
Securities sold under agreements to repurchase | $ 0.2 | $ 70.2
Fair Value | 5,211.9 | 5,185.0
FHLB funding agreements | 889.5 | 792.5
FHLB of Chicago |  |
Schedule of Investments [Line Items] |  |
Fair Value | 961.6 | 860.4
Governmental Agencies as Required by Law in Various States |  |
Schedule of Investments [Line Items] |  |
Fair Value | 28.8 | 28.6
Fair Value |  |
Schedule of Investments [Line Items] |  |
Securities sold under agreements to repurchase | $ 0.4 | $ 73.3
Investment Grade |  |
Schedule of Investments [Line Items] |  |
Decrease in credit spread (percent) | 0.12% |
Increase in total returns (percent) | 3.23% |
Decrease to Bloomberg Barclays Index Yield-To-Worst (percent) | 0.06% |
Bloomberg Barclays Index Yield-to-Worst | 5.48% |
High Yield |  |
Schedule of Investments [Line Items] |  |
Decrease in credit spread (percent) | 0.64% |
Increase in total returns (percent) | 5.42% |
Decrease to Bloomberg Barclays Index Yield-To-Worst (percent) | 0.46% |
Bloomberg Barclays Index Yield-to-Worst | 8.50% |
10-year U.S. Treasury |  |
Schedule of Investments [Line Items] |  |
Decrease in interest rates | 0.03% |
Federal interest rate on securities (percent) | 3.84% | 3.87%

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