v3.26.1
Investments - Fair Value and Gross Unrealized Losses in a Continuous Unrealized Loss Position (Details)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
security
Dec. 31, 2025
USD ($)
security
Fair Value    
Less Than or Equal to Twelve Months $ 33,077 $ 22,143
Greater Than Twelve Months 34,913 37,525
Total 67,990 59,668
Gross Unrealized Losses    
Less Than or Equal to Twelve Months 3,682 3,658
Greater Than Twelve Months 5,650 5,341
Total $ 9,332 $ 8,999
Total number of fixed maturity AFS securities in an unrealized loss position | security 6,980 6,089
Unrealized holding losses arising during the period $ 3 $ 12
Corporate bonds    
Fair Value    
Less Than or Equal to Twelve Months 23,365 16,727
Greater Than Twelve Months 29,373 31,404
Total 52,738 48,131
Gross Unrealized Losses    
Less Than or Equal to Twelve Months 3,339 3,366
Greater Than Twelve Months 4,966 4,688
Total 8,305 8,054
U.S. government bonds    
Fair Value    
Less Than or Equal to Twelve Months 815 427
Greater Than Twelve Months 43 36
Total 858 463
Gross Unrealized Losses    
Less Than or Equal to Twelve Months 36 27
Greater Than Twelve Months 6 5
Total 42 32
State and municipal bonds    
Fair Value    
Less Than or Equal to Twelve Months 623 582
Greater Than Twelve Months 970 995
Total 1,593 1,577
Gross Unrealized Losses    
Less Than or Equal to Twelve Months 153 166
Greater Than Twelve Months 230 219
Total 383 385
Foreign government bonds    
Fair Value    
Less Than or Equal to Twelve Months 12 10
Greater Than Twelve Months 125 135
Total 137 145
Gross Unrealized Losses    
Less Than or Equal to Twelve Months 2 2
Greater Than Twelve Months 49 49
Total 51 51
RMBS    
Fair Value    
Less Than or Equal to Twelve Months 505 345
Greater Than Twelve Months 777 838
Total 1,282 1,183
Gross Unrealized Losses    
Less Than or Equal to Twelve Months 37 39
Greater Than Twelve Months 120 115
Total 157 154
CMBS    
Fair Value    
Less Than or Equal to Twelve Months 1,297 577
Greater Than Twelve Months 917 956
Total 2,214 1,533
Gross Unrealized Losses    
Less Than or Equal to Twelve Months 32 19
Greater Than Twelve Months 84 80
Total 116 99
ABS    
Fair Value    
Less Than or Equal to Twelve Months 6,416 3,453
Greater Than Twelve Months 2,654 3,107
Total 9,070 6,560
Gross Unrealized Losses    
Less Than or Equal to Twelve Months 81 37
Greater Than Twelve Months 189 180
Total 270 217
Hybrid and redeemable preferred securities    
Fair Value    
Less Than or Equal to Twelve Months 44 22
Greater Than Twelve Months 54 54
Total 98 76
Gross Unrealized Losses    
Less Than or Equal to Twelve Months 2 2
Greater Than Twelve Months 6 5
Total $ 8 $ 7