v3.26.1
Investments - Gross Unrealized Loss by Length of Time (Details)
$ in Millions
Mar. 31, 2026
USD ($)
security
Dec. 31, 2025
USD ($)
security
Less than 12 months    
Fair Value $ 2,259 $ 489
Gross Unrealized Loss $ (56) $ (11)
Number of securities | security 728 167
12 months or more    
Fair Value $ 1,489 $ 1,827
Gross Unrealized Loss $ (184) $ (181)
Number of securities | security 735 855
Total    
Fair Value $ 3,748 $ 2,316
Gross Unrealized Loss $ (240) $ (192)
Number of securities | security 1,439 1,014
Obligations of state and political subdivisions    
Less than 12 months    
Fair Value $ 393 $ 79
Gross Unrealized Loss (3) (1)
12 months or more    
Fair Value 629 837
Gross Unrealized Loss (72) (70)
Total    
Fair Value 1,022 916
Gross Unrealized Loss (75) (71)
U.S. government and agencies    
Less than 12 months    
Fair Value 23 14
Gross Unrealized Loss 0 0
12 months or more    
Fair Value 5 5
Gross Unrealized Loss (5) (4)
Total    
Fair Value 28 19
Gross Unrealized Loss (5) (4)
Corporate securities    
Less than 12 months    
Fair Value 1,222 122
Gross Unrealized Loss (38) (1)
12 months or more    
Fair Value 626 732
Gross Unrealized Loss (91) (87)
Total    
Fair Value 1,848 854
Gross Unrealized Loss (129) (88)
RMBS    
Less than 12 months    
Fair Value 105 11
Gross Unrealized Loss (1) 0
12 months or more    
Fair Value 103 114
Gross Unrealized Loss (6) (6)
Total    
Fair Value 208 125
Gross Unrealized Loss (7) (6)
CMBS    
Less than 12 months    
Fair Value 130 41
Gross Unrealized Loss (2) 0
12 months or more    
Fair Value 55 57
Gross Unrealized Loss (1) (1)
Total    
Fair Value 185 98
Gross Unrealized Loss (3) (1)
CLOs    
Less than 12 months    
Fair Value 139 189
Gross Unrealized Loss (5) (9)
12 months or more    
Fair Value 43 44
Gross Unrealized Loss 0 (5)
Total    
Fair Value 182 233
Gross Unrealized Loss (5) (14)
Others    
Less than 12 months    
Fair Value 79 31
Gross Unrealized Loss (1) 0
12 months or more    
Fair Value 9 19
Gross Unrealized Loss 0 0
Total    
Fair Value 88 50
Gross Unrealized Loss (1) 0
Non-U.S. government securities    
Less than 12 months    
Fair Value 168 2
Gross Unrealized Loss (6) 0
12 months or more    
Fair Value 19 19
Gross Unrealized Loss (9) (8)
Total    
Fair Value 187 21
Gross Unrealized Loss $ (15) $ (8)