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v3.25.2

INVESTMENTS - Schedule of Credit Ratings (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 320.4 | $ 309.1
Fair Value | $ 322.7 | $ 306.8
AFS securities | Credit rating |  |
Debt Securities, Available-for-sale [Line Items] |  |
Concentration percentage (in percent) | 100.00% | 100.00%
AAA |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 67.5 | $ 75.2
Fair Value | $ 67.8 | $ 74.8
AAA | AFS securities | Credit rating |  |
Debt Securities, Available-for-sale [Line Items] |  |
Concentration percentage (in percent) | 21.00% | 24.40%
AA+, AA, AA-, A-1+ |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 151.5 | $ 146.0
Fair Value | $ 152.7 | $ 145.0
AA+, AA, AA-, A-1+ | AFS securities | Credit rating |  |
Debt Securities, Available-for-sale [Line Items] |  |
Concentration percentage (in percent) | 47.30% | 47.30%
A+, A, A- |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 82.0 | $ 67.8
Fair Value | $ 82.6 | $ 67.1
A+, A, A- | AFS securities | Credit rating |  |
Debt Securities, Available-for-sale [Line Items] |  |
Concentration percentage (in percent) | 25.60% | 21.90%
BB+ |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 0.1 |
Fair Value | $ 0.1 |
BB+ | AFS securities | Credit rating |  |
Debt Securities, Available-for-sale [Line Items] |  |
Concentration percentage (in percent) | 0.00% |
BBB+, BBB, BBB- |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 19.3 | $ 20.1
Fair Value | $ 19.5 | $ 19.9
BBB+, BBB, BBB- | AFS securities | Credit rating |  |
Debt Securities, Available-for-sale [Line Items] |  |
Concentration percentage (in percent) | 6.10% | 6.40%

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