v3.26.1
Investment Securities - Trading Securities (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Trading Securities [Line Items]    
Total fair value of trading securities $ 73,027 $ 82,096
Mortage-related securities    
Trading Securities [Line Items]    
Total fair value of trading securities 11,227 10,932
Non-mortgage-related securities    
Trading Securities [Line Items]    
Total fair value of trading securities $ 61,800 $ 71,164