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Schedule 2 - Parent Company Financial Statements - Balance Sheets (Parenthetical) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Amortized cost of fixed maturities | $ 7,295.0 | $ 7,565.8
Cost of equity securities | 197.1 | 209.3
Long-term Debt | $ 1,278.4 | 1,213.4
Senior Notes | Senior Notes, 4.35 Percent Due February 15, 2025 |  |
Stated interest rate, percentage | 4.35% |
Parent Company |  |
Amortized cost of fixed maturities | $ 0.5 | 177.4
Cost of equity securities | $ 12.8 | 11.6
Parent Company | Senior Notes | Senior Notes, 4.35 Percent Due February 15, 2025 |  |
Stated interest rate, percentage | 4.35% |
Long-term Debt | $ 448.1 | 440.8
Parent Company | Senior Notes | Senior Notes, 2.400 Percent Due September 30, 2030 |  |
Stated interest rate, percentage | 2.40% |
Long-term Debt | $ 338.9 | 313.6
Parent Company | Senior Notes | Senior Notes, 3.800 Percent Due February 23, 2032 |  |
Stated interest rate, percentage | 3.80% |
Long-term Debt | $ 352.2 | 338.4
Parent Company | Junior Debt | 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062 |  |
Stated interest rate, percentage | 5.875% |
Long-term Debt | $ 139.2 | $ 120.6

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