Annual report pursuant to Section 13 and 15(d)

Derivatives - Narrative (Details)

v3.20.4
Derivatives - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Derivative [Line Items]        
Shareholders’ equity $ 272,924 $ 264,810 $ 265,325 $ 267,146
Net income (loss) in AOCI expected to be reclassified, after tax 190      
Net income (loss) in AOCI expected to be reclassified $ 254      
Terminated cash flow hedges, forecasted transaction hedging period 3 years      
Terminated cash flow hedges, maximum forecasted transaction hedging period 16 years      
Bank of America, N.A.        
Derivative [Line Items]        
Collateral not yet posted $ 1,200      
Credit derivatives        
Derivative [Line Items]        
Cash and securities held as collateral 96,500 84,300    
Cash and securities collateral posted 88,600 69,100    
Collateral not yet posted 2,600      
Foreign Mortgage-backed Securities and Foreign Securities        
Derivative [Line Items]        
Transfer of mortgage-backed securities to third-party trust 5,200 5,200    
Gross cash proceeds from transfer of securities 5,200 5,200    
Fair value of derecognized assets 5,500 $ 5,300    
Derivatives        
Derivative [Line Items]        
Shareholders’ equity 426      
Pretax income (loss) in accumulated OCI $ 566