v3.26.3
Investments - Gross Unrealized Loss by Length of Time (Details)
$ in Millions
Sep. 30, 2026
USD ($)
security
Dec. 31, 2025
USD ($)
security
Less than 12 months    
Fair Value $ 4,087 $ 489
Gross Unrealized Loss $ (220) $ (11)
Number of securities | security 1,205 167
12 months or more    
Fair Value $ 1,172 $ 1,827
Gross Unrealized Loss $ (242) $ (181)
Number of securities | security 640 855
Total    
Fair Value $ 5,259 $ 2,316
Gross Unrealized Loss $ (462) $ (192)
Number of securities | security 1,803 1,014
Obligations of state and political subdivisions    
Less than 12 months    
Fair Value $ 781 $ 79
Gross Unrealized Loss (42) (1)
12 months or more    
Fair Value 447 837
Gross Unrealized Loss (99) (70)
Total    
Fair Value 1,228 916
Gross Unrealized Loss (141) (71)
U.S. government and agencies    
Less than 12 months    
Fair Value 35 14
Gross Unrealized Loss (1) 0
12 months or more    
Fair Value 5 5
Gross Unrealized Loss (5) (4)
Total    
Fair Value 40 19
Gross Unrealized Loss (6) (4)
Corporate securities    
Less than 12 months    
Fair Value 2,146 122
Gross Unrealized Loss (123) (1)
12 months or more    
Fair Value 517 732
Gross Unrealized Loss (112) (87)
Total    
Fair Value 2,663 854
Gross Unrealized Loss (235) (88)
RMBS    
Less than 12 months    
Fair Value 453 11
Gross Unrealized Loss (22) 0
12 months or more    
Fair Value 84 114
Gross Unrealized Loss (10) (6)
Total    
Fair Value 537 125
Gross Unrealized Loss (32) (6)
CMBS    
Less than 12 months    
Fair Value 218 41
Gross Unrealized Loss (9) 0
12 months or more    
Fair Value 44 57
Gross Unrealized Loss (1) (1)
Total    
Fair Value 262 98
Gross Unrealized Loss (10) (1)
CLOs    
Less than 12 months    
Fair Value 141 189
Gross Unrealized Loss (3) (9)
12 months or more    
Fair Value 47 44
Gross Unrealized Loss (5) (5)
Total    
Fair Value 188 233
Gross Unrealized Loss (8) (14)
Others    
Less than 12 months    
Fair Value 138 31
Gross Unrealized Loss (5) 0
12 months or more    
Fair Value 12 19
Gross Unrealized Loss 0 0
Total    
Fair Value 150 50
Gross Unrealized Loss (5) 0
Non-U.S. government securities    
Less than 12 months    
Fair Value 175 2
Gross Unrealized Loss (15) 0
12 months or more    
Fair Value 16 19
Gross Unrealized Loss (10) (8)
Total    
Fair Value 191 21
Gross Unrealized Loss $ (25) $ (8)