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v3.25.3

INVESTMENTS - NARRATIVE (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) mortgage_loan loan | Sep. 30, 2024 USD ($)
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Value of available for sale securities sold | $ 349.1 | $ 561.1 | $ 874.2 | $ 1,230.3
Amortized cost of fixed maturities that were non-income producing | 5.7 |  | 5.7 |
Carrying value of fixed maturities that were non-income producing | 3.8 |  | 3.8 |
Total Fixed Maturities, Available For Sale |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Gross realized losses on sales of fixed maturities, available for sale | (18.1) | $ (12.8) | $ (42.7) | $ (46.3)
Financial Asset, Past Due |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Number of mortgage loans noncurrent | loan |  |  | 24 |
Commercial Portfolio Segment |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Number of mortgage loans in process of foreclosure | mortgage_loan |  |  | 0 |
Carrying value of loans | 1,674.0 |  | $ 1,674.0 |
Residential Portfolio Segment |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Number of mortgage loans noncurrent | mortgage_loan |  |  | 0 |
Residential Portfolio Segment | Financial Asset, Past Due |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Carrying value of loans | 17.7 |  | $ 17.7 |
Residential Portfolio Segment | Financial Asset, Past Due | Foreclosure |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Number of mortgage loans noncurrent | loan |  |  | 5 |
Carrying value of loans | 3.7 |  | $ 3.7 |
Total carrying amount | Residential Mortgage |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Mortgage loans | 1,389.8 |  | 1,389.8 |
Total carrying amount | Commercial Portfolio Segment | Commercial Mortgage |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Mortgage loans | 1,674.0 |  | 1,674.0 |
Total estimated fair value | Residential Mortgage |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Mortgage loans | 1,366.0 |  | 1,366.0 |
Total estimated fair value | Commercial Portfolio Segment | Commercial Mortgage |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Mortgage loans | $ 1,577.1 |  | $ 1,577.1 |

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