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v3.24.2

Investments - Aging of Gross Unrealized Losses (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value |  |
Less than 12 Months | $ 213.7 | $ 168.6
12 Months or More | 167.9 | 236.2
Fair Value | 381.6 | 404.8
Gross Unrealized Losses |  |
Less than 12 Months | (1.1) | (1.4)
12 Months or More | (2.5) | (4.9)
Gross Unrealized Losses | (3.6) | (6.3)
Corporate debt securities |  |
Fair Value |  |
Less than 12 Months | 163.0 | 89.0
12 Months or More | 145.9 | 178.3
Fair Value | 308.9 | 267.3
Gross Unrealized Losses |  |
Less than 12 Months | (0.9) | (1.2)
12 Months or More | (2.3) | (4.0)
Gross Unrealized Losses | (3.2) | (5.2)
U.S. Government obligations |  |
Fair Value |  |
Less than 12 Months | 40.8 | 79.6
12 Months or More | 22.0 | 57.7
Fair Value | 62.8 | 137.3
Gross Unrealized Losses |  |
Less than 12 Months | (0.2) | (0.2)
12 Months or More | (0.2) | (0.9)
Gross Unrealized Losses | (0.4) | (1.1)
Asset-backed securities |  |
Fair Value |  |
Less than 12 Months | 9.9 | 0.0
12 Months or More | 0.0 | 0.2
Fair Value | 9.9 | 0.2
Gross Unrealized Losses |  |
Less than 12 Months | 0.0 | 0.0
12 Months or More | 0.0 | 0.0
Gross Unrealized Losses | $ 0.0 | $ 0.0

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