v3.26.1
INVESTMENTS - Fair Value of AFS Debt Securities by Contractual Maturity Date (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Fair value    
Total fair value $ 257,822 $ 246,720
Unallocated portfolio layer cumulative basis adjustments   17
Mortgage-backed securities    
Amoritzed cost    
Amortized cost, due within 1 year 31  
Amortized cost, after 1 but within 5 years 1,185  
Amortized cost, after 5 but within 10 years 740  
Amortized cost, after 10 years 40,915  
Amortized cost 42,871  
Fair value    
Fair value, due within 1 year 31  
Fair value, after 1 but within 5 years 1,183  
Fair value, after 5 but within 10 years 728  
Fair value, after 10 years 40,193  
Total fair value 42,135 37,732
U.S. Treasury and federal agency securities    
Amoritzed cost    
Amortized cost, due within 1 year 11,443  
Amortized cost, after 1 but within 5 years 30,017  
Amortized cost, after 5 but within 10 years 4,212  
Amortized cost, after 10 years 0  
Amortized cost 45,672  
Fair value    
Fair value, due within 1 year 11,438  
Fair value, after 1 but within 5 years 30,011  
Fair value, after 5 but within 10 years 4,195  
Fair value, after 10 years 0  
Total fair value 45,644  
State and municipal    
Amoritzed cost    
Amortized cost, due within 1 year 69  
Amortized cost, after 1 but within 5 years 67  
Amortized cost, after 5 but within 10 years 330  
Amortized cost, after 10 years 994  
Amortized cost 1,460  
Fair value    
Fair value, due within 1 year 69  
Fair value, after 1 but within 5 years 65  
Fair value, after 5 but within 10 years 323  
Fair value, after 10 years 946  
Total fair value 1,403 1,537
Foreign government    
Amoritzed cost    
Amortized cost, due within 1 year 72,364  
Amortized cost, after 1 but within 5 years 83,410  
Amortized cost, after 5 but within 10 years 4,830  
Amortized cost, after 10 years 480  
Amortized cost 161,084  
Fair value    
Fair value, due within 1 year 72,475  
Fair value, after 1 but within 5 years 82,965  
Fair value, after 5 but within 10 years 4,744  
Fair value, after 10 years 428  
Total fair value 160,612 163,107
All other    
Amoritzed cost    
Amortized cost, due within 1 year 4,139  
Amortized cost, after 1 but within 5 years 3,180  
Amortized cost, after 5 but within 10 years 757  
Amortized cost, after 10 years 39  
Amortized cost 8,115  
Fair value    
Fair value, due within 1 year 4,124  
Fair value, after 1 but within 5 years 3,151  
Fair value, after 5 but within 10 years 750  
Fair value, after 10 years 3  
Total fair value 8,028  
Debt securities AFS    
Amoritzed cost    
Amortized cost 259,202  
Fair value    
Total fair value 257,822 246,720
Unallocated portfolio layer cumulative basis adjustments $ 57 $ (133)