Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Preferred Stock (Details)

v3.20.4
Shareholders' Equity - Preferred Stock (Details)
 12 Months Ended
Jan. 29, 2021
USD ($)
Jan. 28, 2021
USD ($)
shares
Oct. 29, 2020
USD ($)
shares
Jan. 24, 2020
USD ($)
shares
Dec. 31, 2020
USD ($)
day
semi-annualPeriod
quarterlyPeriod
director
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
Dec. 31, 2018
USD ($)
Subsequent Event [Line Items]              
Preferred stock dividends         $ 1,421,000,000 $ 1,432,000,000 $ 1,451,000,000
Issuance of preferred stock         $ 2,181,000,000 $ 3,643,000,000 $ 4,515,000,000
Preferred stock, par value (in dollars per share) | $ / shares         $ 0.01 $ 0.01  
Series MM Preferred Stock              
Subsequent Event [Line Items]              
Preferred stock issued (in shares) | shares       44,000      
Issuance of preferred stock       $ 1,100,000,000      
Preferred stock, liquidation preference       $ 25,000      
Per annum dividend rate         4.30%    
Series Y Preferred Stock              
Subsequent Event [Line Items]              
Redeemed preferred stock         $ 1,100,000,000    
Series CC Preferred Stock              
Subsequent Event [Line Items]              
Per annum dividend rate         6.20%    
Series CC Preferred Stock | Subsequent Event              
Subsequent Event [Line Items]              
Redeemed preferred stock $ 1,100,000,000            
Series NN Preferred Stock              
Subsequent Event [Line Items]              
Preferred stock issued (in shares) | shares     44,000        
Issuance of preferred stock     $ 1,100,000,000        
Preferred stock, liquidation preference     $ 25,000        
Per annum dividend rate     4.375%   4.375%    
Series PP Preferred Stock | Subsequent Event              
Subsequent Event [Line Items]              
Preferred stock issued (in shares) | shares   36,000          
Issuance of preferred stock   $ 915,000,000          
Preferred stock, liquidation preference   $ 25,000          
Per annum dividend rate   4.125%          
Preferred Stock, Excluding Series B, F, G And T Preferred              
Subsequent Event [Line Items]              
Number of semi annual periods in arrears (or more) | semi-annualPeriod         3    
Number of quarterly periods in arrears (or more) | quarterlyPeriod         6    
Number of additional directors to be elected | director         2    
Number of semi annual periods for termination (or more) | semi-annualPeriod         2    
Number of quarterly periods for termination (or more) | quarterlyPeriod         4    
Series L Preferred Stock              
Subsequent Event [Line Items]              
Per annum dividend rate         7.25%    
Preferred stock to be convertible into common shares (in shares) | shares         20    
Number of trading days | day         20    
Period of consecutive trading days | day         30    
Threshold percentage of common stock closing price (exceeds)         130.00%