v3.26.1
Investments in Debt and Equity Securities - Schedule of Cost Basis and Fair Value of Available-for-Sale Securities (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Schedule of Investments in Debt and Equity Securities    
Cost Basis $ 3,638 $ 3,535
Unrealized Pretax Net Gains (Losses) (17) 14
Fair Value 3,621 3,549
U.S. treasury bonds    
Schedule of Investments in Debt and Equity Securities    
Cost Basis 10 10
Unrealized Pretax Net Gains (Losses) 0 0
Fair Value 10 10
Other U.S. and non-U.S. government bonds    
Schedule of Investments in Debt and Equity Securities    
Cost Basis 69 72
Unrealized Pretax Net Gains (Losses) 1 2
Fair Value 70 74
Corporate bonds and other debt securities    
Schedule of Investments in Debt and Equity Securities    
Cost Basis 2,539 2,457
Unrealized Pretax Net Gains (Losses) 1 23
Fair Value 2,540 2,480
Asset-backed securities    
Schedule of Investments in Debt and Equity Securities    
Cost Basis 273 273
Unrealized Pretax Net Gains (Losses) (1) 0
Fair Value 272 273
U.S. governmental agency    
Schedule of Investments in Debt and Equity Securities    
Cost Basis 584 580
Unrealized Pretax Net Gains (Losses) (14) (8)
Fair Value 570 572
Residential    
Schedule of Investments in Debt and Equity Securities    
Cost Basis 5 2
Unrealized Pretax Net Gains (Losses) (1) (1)
Fair Value 4 1
Commercial    
Schedule of Investments in Debt and Equity Securities    
Cost Basis 158 141
Unrealized Pretax Net Gains (Losses) (3) (2)
Fair Value $ 155 $ 139