Annual report pursuant to Section 13 and 15(d)

Derivatives - Narrative (Details)

v3.6.0.2
Derivatives - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Derivative [Line Items]        
Shareholders’ equity $ 266,840 $ 256,176 $ 243,476 $ 232,475
Net losses in AOCI expected to be reclassified, after tax 128      
Net losses in AOCI expected to be reclassified $ 206      
Terminated cash flow hedges, forecasted transaction hedging period 7 years      
Terminated cash flow hedges, maximum forecasted transaction hedging period 20 years      
Credit derivatives        
Derivative [Line Items]        
Derivative asset $ 43 24    
Derivative liability 10 29    
Cash and securities held as collateral 85,500 78,900    
Cash and securities collateral posted 71,100 62,700    
Collateral not yet posted 1,800      
Aggregate fair value of derivative liability 46 69    
Credit derivatives | Bank of America, N.A.        
Derivative [Line Items]        
Collateral not yet posted 1,000      
Credit derivatives | Purchased credit derivatives        
Derivative [Line Items]        
Carrying value of written credit derivatives 4,700 8,200    
Notional amount of written credit derivatives 490,700 706,000    
Foreign Mortgage-backed Securities and Foreign Securities        
Derivative [Line Items]        
Transfer of mortgage-backed securities to third-party trust 6,600 7,900    
Gross cash proceeds from transfer of securities 6,600 7,900    
Fair value of securities transferred 6,300 7,200    
Derivatives        
Derivative [Line Items]        
Shareholders’ equity (895) $ (1,077) $ (1,661) $ (2,277)
Accumulated Other Comprehensive Income (Loss) before tax $ (1,400)