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v3.25.3

Investments - Continuous Unrealized Loss (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
U.S. Government and Government Agencies and Authorities |  |
Fixed Maturities: |  |
Fair Value | $ 3.2 | $ 41.7
Fair Value | 382.4 | 383.6
Fair Value | 385.6 | 425.3
Fixed Maturities: |  |
Unrealized Losses | 0.0 | (0.5)
Unrealized Losses | (84.7) | (101.9)
Unrealized Losses | (84.7) | (102.4)
States and Political Subdivisions |  |
Fixed Maturities: |  |
Fair Value | 178.5 | 242.7
Fair Value | 971.5 | 933.4
Fair Value | 1,150.0 | 1,176.1
Fixed Maturities: |  |
Unrealized Losses | (6.6) | (10.3)
Unrealized Losses | (187.9) | (215.1)
Unrealized Losses | (194.5) | (225.4)
Foreign Governments |  |
Fixed Maturities: |  |
Fair Value | 3.7 | 0.0
Fair Value | 0.4 | 1.4
Fair Value | 4.1 | 1.4
Fixed Maturities: |  |
Unrealized Losses | (0.1) | 0.0
Unrealized Losses | (0.2) | (0.2)
Unrealized Losses | (0.3) | (0.2)
Corporate Bonds and Notes |  |
Fixed Maturities: |  |
Fair Value | 538.0 | 674.3
Fair Value | 2,472.6 | 2,605.7
Fair Value | 3,010.6 | 3,280.0
Fixed Maturities: |  |
Unrealized Losses | (21.3) | (40.9)
Unrealized Losses | (395.9) | (477.9)
Unrealized Losses | (417.2) | (518.8)
Redeemable Preferred Stocks |  |
Fixed Maturities: |  |
Fair Value | 0.0 | 2.0
Fair Value | 2.0 | 6.6
Fair Value | 2.0 | 8.6
Fixed Maturities: |  |
Unrealized Losses | 0.0 | 0.0
Unrealized Losses | 0.0 | (1.0)
Unrealized Losses | 0.0 | (1.0)
Collateralized Loan Obligations |  |
Fixed Maturities: |  |
Fair Value | 57.0 | 34.2
Fair Value | 68.8 | 89.5
Fair Value | 125.8 | 123.7
Fixed Maturities: |  |
Unrealized Losses | (0.5) | (0.1)
Unrealized Losses | (6.0) | (7.1)
Unrealized Losses | (6.5) | (7.2)
Other Mortgage- and Asset-backed |  |
Fixed Maturities: |  |
Fair Value | 13.4 | 12.0
Fair Value | 247.6 | 261.7
Fair Value | 261.0 | 273.7
Fixed Maturities: |  |
Unrealized Losses | 0.0 | (0.1)
Unrealized Losses | (24.8) | (34.4)
Unrealized Losses | (24.8) | (34.5)
Investments in Fixed Maturities |  |
Fixed Maturities: |  |
Fair Value | 793.8 | 1,006.9
Fair Value | 4,145.3 | 4,281.9
Fair Value | 4,939.1 | 5,288.8
Fixed Maturities: |  |
Unrealized Losses | (28.5) | (51.9)
Unrealized Losses | (699.5) | (837.6)
Unrealized Losses | $ (728.0) | $ (889.5)

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