Quarterly report [Sections 13 or 15(d)]

Derivatives - Derivatives Designated as Cash Flow and Net Investment Hedges (Details)

v3.26.1
Derivatives - Derivatives Designated as Cash Flow and Net Investment Hedges (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) excluded from effectiveness testing and recognized in market making and similar activities $ 38 $ 2
Cash flow hedges    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (Losses) Recognized in Accumulated OCI on Derivatives (1,193) 1,362
Gains (Losses) in Income Reclassified from Accumulated OCI (372) (388)
Interest rate risk on variable-rate portfolios | Cash flow hedges    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (Losses) Recognized in Accumulated OCI on Derivatives (1,193) 1,361
Gains (Losses) in Income Reclassified from Accumulated OCI (375) (393)
Price risk on forecasted MBS purchases | Cash flow hedges    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (Losses) Recognized in Accumulated OCI on Derivatives 0 0
Gains (Losses) in Income Reclassified from Accumulated OCI (2) (2)
Price risk on certain compensation plans | Cash flow hedges    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (Losses) Recognized in Accumulated OCI on Derivatives 0 1
Gains (Losses) in Income Reclassified from Accumulated OCI 5 7
Foreign exchange risk | Net investment hedges    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (Losses) Recognized in Accumulated OCI on Derivatives 677 (952)
Gains (Losses) in Income Reclassified from Accumulated OCI $ 4 $ 0