Quarterly report [Sections 13 or 15(d)]

Derivatives - Narrative (Details)

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Derivatives - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Derivative [Line Items]            
Shareholders’ equity $ 301,094 $ 298,021 $ 300,668 $ 303,243 $ 293,949 $ 293,963
Net loss in AOCI expected to be reclassified, after tax 2,000          
Net loss in AOCI expected to be reclassified $ 2,700          
Open cash flow hedge, forecasted transactions hedging period (in years) 3 years          
Terminated cash flow hedges, period forecasted transaction recognized in interest income (in years) 5 years          
Bank of America, N.A. and subsidiaries            
Derivative [Line Items]            
Collateral not yet posted $ 3,200          
Interest rate risk on long-term debt            
Derivative [Line Items]            
Decrease in liability 12,000     12,900    
Interest rate risk on AFS securities            
Derivative [Line Items]            
Available-for-sale securities from discontinued hedging relationships cumulative decrease 1,400     2,700    
Credit derivatives            
Derivative [Line Items]            
Cash and securities held as collateral 137,700     119,700    
Cash and securities collateral posted 103,600     97,800    
Collateral not yet posted 5,600          
Foreign Mortgage-backed Securities and Foreign Securities            
Derivative [Line Items]            
Transfer of mortgage-backed securities to third-party trust 4,100     3,900    
Gross cash proceeds from transfer of securities 4,100     3,900    
Fair value of derecognized assets 3,900     3,800    
Derivatives            
Derivative [Line Items]            
Shareholders’ equity (3,376) (3,079)   $ (1,998)   $ (5,588)
Pretax loss in accumulated OCI 4,400          
Pretax losses reclassified from accumulated OCI $ 725 $ 765