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Investments - Narrative (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021
Investment Holdings |  |
Investment grade rating | 92.70% |
Debt securities, available-for-sale | $ 5,688.0 | $ 6,239.3
FHLB funding agreements | $ 866.5 | $ 787.5
Investment Grade |  |
Investment Holdings |  |
Increase in credit spread (percent) | 0.66% |
Decrease in total returns (percent) | 13.90% |
Increase to Bloomberg Barclays Index Yield-To-Worst (percent) | 2.40% |
Bloomberg Barclays Index Yield-to-Worst | 4.70% |
High Yield |  |
Investment Holdings |  |
Increase in credit spread (percent) | 2.77% |
Decrease in total returns (percent) | 14.00% |
Increase to Bloomberg Barclays Index Yield-To-Worst (percent) | 4.70% |
Bloomberg Barclays Index Yield-to-Worst | 8.90% |
10-year U.S. Treasury |  |
Investment Holdings |  |
Increase in interest rates | 1.50% |
Federal interest rate on securities (percent) | 3.01% | 1.51%
FHLB of Chicago |  |
Investment Holdings |  |
Debt securities, available-for-sale | $ 959.6 | $ 870.1
Governmental Agencies as Required by Law in Various States |  |
Investment Holdings |  |
Debt securities, available-for-sale | $ 28.6 | $ 26.2

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