v3.26.1
Investments in Securities - Maturity Information (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Total Carrying Amount    
Total carrying amount $ 12,528  
One Year or Less 4  
After One Year Through Five Years 5,428  
After Five Years Through Ten Years 6,677  
After Ten Years 419  
Total Fair Value    
Total Fair Value 12,424 $ 375
One Year or Less 4  
After One Year Through Five Years 5,390  
After Five Years Through Ten Years 6,639  
After Ten Years $ 391  
Weighted-average interest rate 3.79%  
Weighted-average interest rate, One Year or Less 5.71%  
Weighted-average interest rate, After One Year Through Five Years 3.70%  
Weighted-average interest rate, After Five Years Through Ten Years 3.67%  
Weighted-average interest rate, After Ten Years 6.11%  
Mortgage-related securities    
Total Carrying Amount    
Total carrying amount $ 544  
One Year or Less 4  
After One Year Through Five Years 7  
After Five Years Through Ten Years 114  
After Ten Years 419  
Total Fair Value    
Total Fair Value 518 375
One Year or Less 4  
After One Year Through Five Years 7  
After Five Years Through Ten Years 116  
After Ten Years 391  
Non-mortgage-related securities    
Total Carrying Amount    
Total carrying amount 11,984  
One Year or Less 0  
After One Year Through Five Years 5,421  
After Five Years Through Ten Years 6,563  
After Ten Years 0  
Total Fair Value    
Total Fair Value 11,906 $ 0
One Year or Less 0  
After One Year Through Five Years 5,383  
After Five Years Through Ten Years 6,523  
After Ten Years $ 0