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v3.23.3

Investments - Continuous Unrealized Loss (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022
--- | --- | --- | ---
U.S. Government and Government Agencies and Authorities |  |  |
Fixed Maturities: |  |  |
Fair Value | $ 93.4 | $ 337.3 |
Fair Value | 381.9 | 126.5 |
Fair Value | 475.3 | 463.8 |
Fixed Maturities: |  |  |
Unrealized Losses | (4.1) | (49.3) |
Unrealized Losses | (108.6) | (36.5) |
Unrealized Losses | (112.7) | (85.8) |
States and Political Subdivisions |  |  |
Fixed Maturities: |  |  |
Fair Value | 374.3 | 854.7 |
Fair Value | 873.5 | 276.8 |
Fair Value | 1,247.8 | 1,131.5 |
Fixed Maturities: |  |  |
Unrealized Losses | (22.0) | (140.6) |
Unrealized Losses | (272.7) | (97.7) |
Unrealized Losses | (294.7) | (238.3) |
Foreign Governments |  |  |
Fixed Maturities: |  |  |
Fair Value | 0.1 | 0.1 |
Fair Value | 2.4 | 2.6 |
Fair Value | 2.5 | 2.7 |
Fixed Maturities: |  |  |
Unrealized Losses | 0.0 | 0.0 |
Unrealized Losses | (0.9) | (0.9) |
Unrealized Losses | (0.9) | (0.9) |
Corporate Debt Securities [Member] |  |  |
Fixed Maturities: |  |  |
Fair Value | 608.6 | 2,730.6 |
Fair Value | 2,638.0 | 424.4 |
Fair Value | 3,246.6 | 3,155.0 |
Fixed Maturities: |  |  |
Unrealized Losses | (54.1) | (373.9) |
Unrealized Losses | (597.5) | (125.8) |
Unrealized Losses | (651.6) | (499.7) |
Redeemable Preferred Stocks |  |  |
Fixed Maturities: |  |  |
Fair Value | 0.0 |  | $ 7.7
Fair Value | 7.4 |  | 0.0
Fair Value | 7.4 |  | 7.7
Fixed Maturities: |  |  |
Unrealized Losses | 0.0 |  | (1.0)
Unrealized Losses | (1.3) |  | 0.0
Unrealized Losses | (1.3) |  | $ (1.0)
Collateralized Loan Obligations |  |  |
Fixed Maturities: |  |  |
Fair Value | 21.9 | 568.2 |
Fair Value | 776.2 | 373.9 |
Fair Value | 798.1 | 942.1 |
Fixed Maturities: |  |  |
Unrealized Losses | (0.3) | (34.2) |
Unrealized Losses | (29.8) | (26.6) |
Unrealized Losses | (30.1) | (60.8) |
Other Mortgage- and Asset-backed |  |  |
Fixed Maturities: |  |  |
Fair Value | 25.3 | 205.4 |
Fair Value | 276.5 | 79.5 |
Fair Value | 301.8 | 284.9 |
Fixed Maturities: |  |  |
Unrealized Losses | (0.4) | (28.9) |
Unrealized Losses | (57.3) | (21.4) |
Unrealized Losses | (57.7) | (50.3) |
Investments in Fixed Maturities |  |  |
Fixed Maturities: |  |  |
Fair Value | 1,123.6 | 4,704.0 |
Fair Value | 4,955.9 | 1,283.7 |
Fair Value | 6,079.5 | 5,987.7 |
Fixed Maturities: |  |  |
Unrealized Losses | (80.9) | (627.9) |
Unrealized Losses | (1,068.1) | (308.9) |
Unrealized Losses | (1,149.0) | (936.8) |
Investments in Fixed Maturities | Non-investment-grade |  |  |
Fixed Maturities: |  |  |
Unrealized Losses | $ (28.9) | $ (32.8) |

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