Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity (Details)

v3.5.0.2
Shareholders' Equity (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Oct. 27, 2016
Jul. 27, 2016
Apr. 27, 2016
Jan. 21, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Sep. 30, 2016
Sep. 30, 2015
Common Stock                  
Common stock dividends declared (in dollars per share)   $ 0.075 $ 0.05 $ 0.05          
Common stock repurchased               $ 3,782 $ 1,575
Share-based compensation, number of shares authorized (in shares)         1,600.0     1,600.0  
Preferred Stock                  
Preferred stock dividends         $ 503 $ 361 $ 457 $ 1,321 $ 1,153
Warrants Expiring January 16, 2019                  
Common Stock                  
Warrants outstanding (in shares)         150.0     150.0  
Minimum required dividend rate (in dollars per share)         $ 0.01     $ 0.01  
Exercise price per warrant (in dollars per share)         $ 12.980     $ 12.980  
Warrants Expiring October 28, 2018                  
Common Stock                  
Warrants outstanding (in shares)         122.0     122.0  
Minimum required dividend rate (in dollars per share)         $ 0.32     $ 0.32  
Common Stock                  
Common Stock                  
Stock issued (in shares)               9.0  
Shares paid for tax withholding for share based compensation (in shares)               4.0  
2016 Capital Plan                  
Common Stock                  
Common stock repurchased (in shares)         93.0        
Common stock repurchased         $ 1,400        
Subsequent Event                  
Common Stock                  
Common stock dividends declared (in dollars per share) $ 0.075