v3.26.1
Investments - Schedule of Debt Securities - Amortized Cost, Gross Unrealized Gains and Losses, Fair Value and Allowance for Debt Securities Maturities (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Amortized Cost    
Due in 1 year or less $ 2,396  
Due after 1 year through 5 years 14,867  
Due after 5 years through 10 years 14,854  
Due after 10 years through 20 years 9,869  
Due after 20 years 7,683  
Amortized Cost 59,349 $ 53,961
Allowance for Credit Loss    
Due in 1 year or less 0  
Due after 1 year through 5 years 0  
Due after 5 years through 10 years 0  
Due after 10 years through 20 years 5  
Due after 20 years 0  
Allowance for Credit Loss 24 11
Gross Unrealized Gains    
Due in 1 year or less 2  
Due after 1 year through 5 years 84  
Due after 5 years through 10 years 136  
Due after 10 years through 20 years 50  
Due after 20 years 19  
Gross Unrealized Gains 331 592
Gross Unrealized Losses    
Due in 1 year or less 7  
Due after 1 year through 5 years 390  
Due after 5 years through 10 years 362  
Due after 10 years through 20 years 1,388  
Due after 20 years 1,548  
Gross Unrealized Losses 3,914 3,751
Fair Value    
Due in 1 year or less 2,391  
Due after 1 year through 5 years 14,561  
Due after 5 years through 10 years 14,628  
Due after 10 years through 20 years 8,526  
Due after 20 years 6,154  
Debt securities 55,742 50,791
Residential mortgage-backed    
Amortized Cost    
Without single maturity 456  
Amortized Cost 456 445
Allowance for Credit Loss    
Without single maturity 1  
Allowance for Credit Loss 1 4
Gross Unrealized Gains    
Without single maturity 20  
Gross Unrealized Gains 20 24
Gross Unrealized Losses    
Without single maturity 29  
Gross Unrealized Losses 29 23
Fair Value    
Without single maturity 446  
Debt securities 446 442
Commercial mortgage-backed    
Amortized Cost    
Without single maturity 2,087  
Amortized Cost 2,087 1,873
Allowance for Credit Loss    
Without single maturity 0  
Allowance for Credit Loss 0 0
Gross Unrealized Gains    
Without single maturity 4  
Gross Unrealized Gains 4 10
Gross Unrealized Losses    
Without single maturity 62  
Gross Unrealized Losses 62 54
Fair Value    
Without single maturity 2,029  
Debt securities 2,029 1,829
Other asset-backed securities    
Amortized Cost    
Without single maturity 7,137  
Amortized Cost 7,137 5,491
Allowance for Credit Loss    
Without single maturity 18  
Allowance for Credit Loss 18 7
Gross Unrealized Gains    
Without single maturity 16  
Gross Unrealized Gains 16 34
Gross Unrealized Losses    
Without single maturity 128  
Gross Unrealized Losses 128 130
Fair Value    
Without single maturity 7,007  
Debt securities $ 7,007 $ 5,388