Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Narrative (Details)

v3.7.0.1
Shareholders' Equity - Narrative (Details) - USD ($)
 3 Months Ended 6 Months Ended
Apr. 26, 2017
Jan. 26, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Jun. 30, 2017
Jun. 30, 2016
Jun. 28, 2017
Jan. 13, 2017
Common Stock                  
Common stock dividends declared (in dollars per share) $ 0.075 $ 0.075   $ 0.075          
Common stock repurchased           $ 4,964,000,000 $ 2,383,000,000    
Share-based compensation, number of shares authorized (in shares)       1,600,000,000   1,600,000,000      
Preferred Stock                  
Preferred stock dividends           $ 863,000,000 $ 818,000,000    
Common Stock                  
Common Stock                  
Common stock repurchased (in shares)       96,000,000   211,000,000      
Common stock repurchased       $ 2,200,000,000   $ 5,000,000,000      
Stock issued (in shares)           60,000,000      
Shares paid for tax withholding for share based compensation (in shares)           24,000,000      
Preferred Stock                  
Preferred Stock                  
Preferred stock dividends       $ 361,000,000 $ 502,000,000 $ 863,000,000      
Shares issued (in shares)           0      
Warrants Expiring October 18, 2018                  
Common Stock                  
Warrants outstanding (in shares)       122,000,000   122,000,000      
Minimum required dividend rate (in dollars per share)       $ 0.32   $ 0.32      
Exercise price per warrant (in dollars per share)       $ 30.79   $ 30.79      
Warrants Expiring January 16, 2019                  
Common Stock                  
Warrants outstanding (in shares)       150,000,000   150,000,000      
Minimum required dividend rate (in dollars per share)       $ 0.01   $ 0.01      
Exercise price per warrant (in dollars per share)       $ 12.867   $ 12.867      
Forecast                  
Common Stock                  
Common stock dividends declared (in dollars per share)     $ 0.12            
2017 CCAR                  
Common Stock                  
Shares authorized to be repurchased, amount               $ 12,900,000,000  
2017 CCAR, Equity-Based Compensation Plan Effect Offset                  
Common Stock                  
Shares authorized to be repurchased, amount               $ 900,000,000  
Other authorized repurchases | Common Stock                  
Common Stock                  
Shares authorized to be repurchased, amount                 $ 1,800,000,000.0