v3.26.1
INVESTMENTS - Schedule of Unrealized Losses (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value    
Less than 12 Months $ 322.3  
12 Months or More 14.1  
Total 336.4  
Unrealized Loss    
Less than 12 Months (2.8)  
12 Months or More (0.4)  
Total (3.2)  
United States Treasury securities and agencies    
Fair Value    
Less than 12 Months 30.2 $ 2.0
12 Months or More 0.8 0.7
Total 31.0 2.7
Unrealized Loss    
Less than 12 Months (0.2) 0.0
12 Months or More 0.0 0.0
Total (0.2) 0.0
Municipal securities    
Fair Value    
Less than 12 Months 8.7 0.0
12 Months or More 2.9 6.5
Total 11.6 6.5
Unrealized Loss    
Less than 12 Months (0.1) 0.0
12 Months or More 0.0 (0.1)
Total (0.1) (0.1)
Corporate debt securities    
Fair Value    
Less than 12 Months 159.1 21.5
12 Months or More 6.3 7.4
Total 165.4 28.9
Unrealized Loss    
Less than 12 Months (1.3) 0.0
12 Months or More (0.2) (0.2)
Total (1.5) (0.2)
Asset-backed securities    
Fair Value    
Less than 12 Months 113.5 20.3
12 Months or More 4.1 5.9
Total 117.6 26.2
Unrealized Loss    
Less than 12 Months (1.2) (0.1)
12 Months or More (0.2) (0.2)
Total (1.4) (0.3)
Total fixed maturities    
Fair Value    
Less than 12 Months 311.5 43.8
12 Months or More 14.1 20.5
Total 325.6 64.3
Unrealized Loss    
Less than 12 Months (2.8) (0.1)
12 Months or More (0.4) (0.5)
Total (3.2) $ (0.6)
Short-term investments    
Fair Value    
Less than 12 Months 10.8  
12 Months or More 0.0  
Total 10.8  
Unrealized Loss    
Less than 12 Months 0.0  
12 Months or More 0.0  
Total $ 0.0