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 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Gains (losses) excluded from effectiveness testing and recognized in market making and similar activities $ (49) $ 25 $ (11) $ 27
Cash flow hedges        
Derivative Instruments, Gain (Loss) [Line Items]        
Gains (Losses) Recognized in Accumulated OCI on Derivatives (1,338) 1,221 (2,531) 2,583
Gains (Losses) in Income Reclassified from Accumulated OCI (351) (374) (723) (762)
Interest rate risk on variable-rate portfolios | Cash flow hedges        
Derivative Instruments, Gain (Loss) [Line Items]        
Gains (Losses) Recognized in Accumulated OCI on Derivatives (1,338) 1,221 (2,531) 2,582
Gains (Losses) in Income Reclassified from Accumulated OCI (353) (377) (728) (770)
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 0 0
Gains (Losses) in Income Reclassified from Accumulated OCI (2) (2) (4) (4)
Price risk on certain compensation plans | Cash flow hedges        
Derivative Instruments, Gain (Loss) [Line Items]        
Gains (Losses) Recognized in Accumulated OCI on Derivatives 0 0 0 1
Gains (Losses) in Income Reclassified from Accumulated OCI 4 5 9 12
Foreign exchange risk | Net investment hedges        
Derivative Instruments, Gain (Loss) [Line Items]        
Gains (Losses) Recognized in Accumulated OCI on Derivatives 147 (2,153) 824 (3,105)
Gains (Losses) in Income Reclassified from Accumulated OCI $ 0 $ 0 $ 4 $ 0