Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Preferred Stock Narrative (Details)

v3.22.0.1
Shareholders' Equity - Preferred Stock Narrative (Details)
$ / shares in Units, $ in Millions
 12 Months Ended
Jan. 31, 2022
USD ($)
$ / shares
shares
Jan. 25, 2022
USD ($)
$ / shares
shares
Oct. 26, 2021
USD ($)
$ / shares
shares
Jan. 28, 2021
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
d
quarterly_period
director
semi_annual_period
payment
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
Dec. 31, 2019
USD ($)
Class of Stock [Line Items]              
Preferred stock dividends         $ 1,421 $ 1,421 $ 1,432
Issuance of preferred stock         $ 2,169 $ 2,181 $ 3,643
Preferred stock, par value (in dollars per share) | $ / shares         $ 0.01 $ 0.01  
Series PP Preferred Stock              
Class of Stock [Line Items]              
Preferred stock issued (in shares) | shares       37,000      
Per annum dividend rate       4.125% 4.125%    
Issuance of preferred stock       $ 915      
Liquidation preference per share (in dollars per share) | $ / shares       $ 25,000 $ 25,000    
Series QQ Preferred Stock              
Class of Stock [Line Items]              
Preferred stock issued (in shares) | shares     52,000        
Per annum dividend rate     4.25%   4.25%    
Issuance of preferred stock     $ 1,300        
Liquidation preference per share (in dollars per share) | $ / shares     $ 25,000   $ 25,000    
Series RR Preferred Stock | Subsequent Event              
Class of Stock [Line Items]              
Preferred stock issued (in shares) | shares   70,000          
Per annum dividend rate   4.375%          
Issuance of preferred stock   $ 1,800          
Liquidation preference per share (in dollars per share) | $ / shares   $ 25,000          
Series SS Preferred Stock | Subsequent Event              
Class of Stock [Line Items]              
Preferred stock issued (in shares) | shares 28,000            
Per annum dividend rate 4.75%            
Issuance of preferred stock $ 700            
Liquidation preference per share (in dollars per share) | $ / shares $ 25,000            
Series CC, EE And T Preferred Stock              
Class of Stock [Line Items]              
Redeemed preferred stock         $ 2,000    
Preferred Stock, Excluding Series B, F, G And T Preferred              
Class of Stock [Line Items]              
Number of semi annual periods in arrears (or more) | payment         3    
Number of quarterly periods in arrears (or more) | quarterly_period         6    
Number of additional directors to be elected | director         2    
Number of semi annual periods for termination (or more) | semi_annual_period         2    
Number of quarterly periods for termination (or more) | quarterly_period         4    
Series L Preferred Stock              
Class of Stock [Line Items]              
Per annum dividend rate         7.25%    
Liquidation preference per share (in dollars per share) | $ / shares         $ 1,000    
Preferred stock to be convertible into common shares (in shares) | shares         20    
Number of trading days | d         20    
Period of consecutive trading days | d         30    
Threshold percentage of common stock closing price (exceeds)         130.00%