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v3.26.1

INVESTMENTS - NARRATIVE (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2026 USD ($) mortgage_loan loan | Mar. 31, 2025 USD ($)
Debt Securities, Available-for-sale [Line Items] |  |
Value of available for sale securities sold | $ 1,657.1 | $ 230.3
Amortized cost of fixed maturities that were non-income producing | 5.7 |
Carrying value of fixed maturities that were non-income producing | 3.5 |
Total fixed maturities, available for sale |  |
Debt Securities, Available-for-sale [Line Items] |  |
Gross realized losses on sales of fixed maturities, available for sale | $ (56.3) | $ (2.8)
Financial Asset, Past Due |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of mortgage loans noncurrent | loan | 38 |
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 | $ 1,852.9 |
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 | $ 28.4 |
Residential Portfolio Segment | Financial Asset, Past Due | Foreclosure |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of mortgage loans noncurrent | loan | 12 |
Carrying value of loans | $ 8.0 |
Total carrying amount | Residential Mortgage |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage loans | 1,511.9 |
Total carrying amount | Commercial Portfolio Segment | Commercial Mortgage |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage loans | 1,852.9 |
Total estimated fair value | Residential Mortgage |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage loans | 1,527.8 |
Total estimated fair value | Commercial Portfolio Segment | Commercial Mortgage |  |
Debt Securities, Available-for-sale [Line Items] |  |
Mortgage loans | $ 1,752.6 |

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