Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Common Stock Narrative (Details)

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Shareholders' Equity - Common Stock Narrative (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Jun. 27, 2019
Feb. 07, 2019
Jun. 28, 2018
Common Stock            
Common stock, dividends paid per share (in dollars per share) $ 0.66 $ 0.54 $ 0.39      
Authorized amount         $ 2,500  
Common stock repurchased $ 28,144 $ 20,094 $ 12,814      
Common Stock            
Common Stock            
Common stock repurchased (in shares) 956 676 509      
Common stock repurchased $ 28,144 $ 20,094 $ 12,814      
Stock issued (in shares) 91          
Shares paid for tax withholding for share based compensation (in shares) 35          
Share-based compensation, number of shares authorized (in shares) 579          
2018 Comprehensive CCAR            
Common Stock            
Authorized amount           $ 20,600
2018 Comprehensive CCAR, Equity-based Compensation Plan Effect Offset            
Common Stock            
Authorized amount           $ 600
2019 Comprehensive CCAR            
Common Stock            
Authorized amount       $ 30,900    
2019 Comprehensive CCAR, Equity Based Compensation Plan Effect Offset            
Common Stock            
Authorized amount       $ 900