Annual report pursuant to Section 13 and 15(d)

Derivatives - Narrative (Details)

v3.19.3.a.u2
Derivatives - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Derivative [Line Items]        
Shareholders’ equity $ 264,810 $ 265,325 $ 267,146 $ 266,195
Net income (loss) in AOCI expected to be reclassified, after tax (68)      
Net income (loss) in AOCI expected to be reclassified $ (90)      
Terminated cash flow hedges, forecasted transaction hedging period 3 years      
Terminated cash flow hedges, maximum forecasted transaction hedging period 16 years      
Credit derivatives        
Derivative [Line Items]        
Cash and securities held as collateral $ 84,300 81,600    
Cash and securities collateral posted 69,100 56,500    
Collateral not yet posted 2,300      
Credit derivatives | Bank of America, N.A.        
Derivative [Line Items]        
Collateral not yet posted 913      
Foreign Mortgage-backed Securities and Foreign Securities        
Derivative [Line Items]        
Transfer of mortgage-backed securities to third-party trust 5,200 5,800    
Gross cash proceeds from transfer of securities 5,200 5,800    
Fair value of derecognized assets 5,300 $ 5,500    
Derivatives        
Derivative [Line Items]        
Shareholders’ equity (400)      
Pretax income (loss) in accumulated OCI $ (526)