Quarterly report pursuant to Section 13 or 15(d)

Derivatives - Narrative (Details)

v3.19.2
Derivatives - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Derivative [Line Items]            
Shareholders’ equity $ 271,408 $ 267,010 $ 265,325 $ 264,216 $ 266,224 $ 267,146
Net losses in AOCI expected to be reclassified, after tax 109          
Net losses in AOCI expected to be reclassified $ 143          
Terminated cash flow hedges, forecasted transaction hedging period 4 years          
Terminated cash flow hedges, maximum forecasted transaction hedging period 17 years          
Interest rate risk on long-term debt            
Derivative [Line Items]            
Long-term debt from discontinued hedging relationships cumulative increase (decrease) $ (1,500)   (1,600)      
Interest rate risk on AFS securities            
Derivative [Line Items]            
Available-for-sale securities from discontinued hedging relationships cumulative increase (decrease) 4   (29)      
Credit derivatives            
Derivative [Line Items]            
Cash and securities held as collateral 81,600   81,600      
Cash and securities collateral posted 67,100   56,500      
Collateral not yet posted 1,900          
Aggregate fair value of derivative liability 0   0      
Credit derivatives | Bank of America, N.A.            
Derivative [Line Items]            
Collateral not yet posted 1,200          
Foreign Mortgage-backed Securities and Foreign Securities            
Derivative [Line Items]            
Transfer of mortgage-backed securities to third-party trust 5,600   5,800      
Gross cash proceeds from transfer of securities 5,600   5,800      
Fair value of derecognized assets 5,600   $ 5,500      
Derivatives            
Derivative [Line Items]            
Shareholders’ equity (483)          
Pretax loss $ 635