v3.26.1
Fair Value Option - Gains (Losses) Due to Changes in Instrument-Specific Credit Risk (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Fair Value disclosure      
Cumulative pre-tax DVA gain (loss) recognized in AOCI $ (2,377)   $ (4,005)
Loans and other receivables | OCI      
Fair Value disclosure      
Gains (losses) due to changes in instrument-specific credit risk 0 $ 0  
Loans and other receivables | Trading Revenues      
Fair Value disclosure      
Gains (losses) due to changes in instrument-specific credit risk 16 (6)  
Lending commitments | OCI      
Fair Value disclosure      
Gains (losses) due to changes in instrument-specific credit risk 0 0  
Lending commitments | Trading Revenues      
Fair Value disclosure      
Gains (losses) due to changes in instrument-specific credit risk (3) (1)  
Deposits | OCI      
Fair Value disclosure      
Gains (losses) due to changes in instrument-specific credit risk 8 50  
Deposits | Trading Revenues      
Fair Value disclosure      
Gains (losses) due to changes in instrument-specific credit risk 0 0  
Borrowings | OCI      
Fair Value disclosure      
Gains (losses) due to changes in instrument-specific credit risk 1,621 398  
Borrowings | Trading Revenues      
Fair Value disclosure      
Gains (losses) due to changes in instrument-specific credit risk $ (9) $ (9)