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v3.25.1

Investments - Continuous Loss Position (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Less than 12 months |  |
Fair Value | $ 82.8 | $ 96.2
Gross Unrealized Losses | (0.1) | (0.8)
12 months or more |  |
Fair Value | 42.2 | 51.1
Gross Unrealized Losses | (2.2) | (2.7)
Total |  |
Fair Value | 125.1 | 147.3
Gross Unrealized Losses | (2.3) | (3.5)
U.S. government and agencies |  |
Less than 12 months |  |
Fair Value | 8.9 | 14.5
Gross Unrealized Losses | 0.0 | (0.1)
12 months or more |  |
Fair Value | 1.9 | 1.9
Gross Unrealized Losses | (0.1) | (0.1)
Total |  |
Fair Value | 10.8 | 16.4
Gross Unrealized Losses | (0.1) | (0.2)
States and other territories |  |
Less than 12 months |  |
Fair Value | 1.9 | 5.0
Gross Unrealized Losses | 0.0 | (0.1)
12 months or more |  |
Fair Value | 4.8 | 5.5
Gross Unrealized Losses | (0.2) | (0.2)
Total |  |
Fair Value | 6.7 | 10.5
Gross Unrealized Losses | (0.2) | (0.3)
Corporate securities |  |
Less than 12 months |  |
Fair Value | 36.4 | 55.2
Gross Unrealized Losses | (0.1) | (0.5)
12 months or more |  |
Fair Value | 19.1 | 25.4
Gross Unrealized Losses | (0.4) | (0.6)
Total |  |
Fair Value | 55.6 | 80.6
Gross Unrealized Losses | (0.5) | (1.1)
Residential mortgage-backed securities |  |
Less than 12 months |  |
Fair Value | 3.8 | 7.4
Gross Unrealized Losses | 0.0 | (0.1)
12 months or more |  |
Fair Value | 9.9 | 10.1
Gross Unrealized Losses | (1.2) | (1.4)
Total |  |
Fair Value | 13.7 | 17.5
Gross Unrealized Losses | (1.2) | (1.5)
Commercial mortgage-backed securities |  |
Less than 12 months |  |
Fair Value | 1.4 | 0.4
Gross Unrealized Losses | 0.0 | 0.0
12 months or more |  |
Fair Value | 4.1 | 4.1
Gross Unrealized Losses | (0.3) | (0.4)
Total |  |
Fair Value | 5.5 | 4.5
Gross Unrealized Losses | (0.3) | (0.4)
Asset backed securities |  |
Less than 12 months |  |
Fair Value | 2.1 | 0.0
Gross Unrealized Losses | 0.0 | 0.0
12 months or more |  |
Fair Value | 2.4 | 4.1
Gross Unrealized Losses | 0.0 | 0.0
Total |  |
Fair Value | 4.5 | 4.1
Gross Unrealized Losses | 0.0 | 0.0
U.S. government and agencies |  |
Less than 12 months |  |
Fair Value | 1.9 | 0.0
Gross Unrealized Losses | 0.0 | 0.0
12 months or more |  |
Fair Value | 0.0 | 0.0
Gross Unrealized Losses | 0.0 | 0.0
Total |  |
Fair Value | 1.9 | 0.0
Gross Unrealized Losses | 0.0 | 0.0
Commercial paper |  |
Less than 12 months |  |
Fair Value | 8.4 | 6.3
Gross Unrealized Losses | 0.0 | 0.0
12 months or more |  |
Fair Value | 0.0 | 0.0
Gross Unrealized Losses | 0.0 | 0.0
Total |  |
Fair Value | 8.4 | 6.3
Gross Unrealized Losses | 0.0 | 0.0
Corporate securities |  |
Less than 12 months |  |
Fair Value | 18.0 | 7.4
Gross Unrealized Losses | 0.0 | 0.0
12 months or more |  |
Fair Value | 0.0 | 0.0
Gross Unrealized Losses | 0.0 | 0.0
Total |  |
Fair Value | 18.0 | 7.4
Gross Unrealized Losses | $ 0.0 | $ 0.0

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