Quarterly report pursuant to Section 13 or 15(d)

Derivatives - Narrative (Details)

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Derivatives - Narrative (Details) (USD $)
 9 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2013
Dec. 31, 2012
Derivative [Line Items]        
Accumulated other comprehensive income (loss) $ (5,515,000,000) $ (8,457,000,000) $ (6,823,000,000) $ (2,797,000,000)
Net Losses in AOCI 905,000,000      
Net Losses in AOCI, after tax 566,000,000      
Credit derivatives
        
Derivative [Line Items]        
Cash and securities held as collateral 78,000,000,000 74,400,000,000    
Cash and securities collateral posted 58,200,000,000 56,100,000,000    
Collateral not yet posted 1,400,000,000      
Aggregate fair value of derivative liability 93,000,000      
Credit derivatives, Unilateral Termination Option
        
Derivative [Line Items]        
Cash and securities collateral posted 28,000,000      
Purchased credit derivatives | Credit derivatives
        
Derivative [Line Items]        
Carrying value of written credit derivatives 4,300,000,000 8,100,000,000    
Notional amount of written credit derivatives 902,900,000,000 1,000,000,000,000    
Bank of America, N.A. | Credit derivatives
        
Derivative [Line Items]        
Collateral not yet posted 763,000,000      
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
        
Derivative [Line Items]        
Accumulated other comprehensive income (loss) $ (1,866,000,000) $ (2,277,000,000) $ (2,504,000,000) $ (2,869,000,000)