Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Common Stock Repurchase Summary (Details)

v3.6.0.2
Stockholders' Equity - Common Stock Repurchase Summary (Details) - USD ($)
shares in Millions, $ in Millions
12 Months Ended
Mar. 18, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Class of Stock [Line Items]        
Total purchase price of shares repurchased and retired   $ 5,112 $ 2,374 $ 1,675
Common Stock | CCAR capital plan repurchases        
Class of Stock [Line Items]        
Total number of shares repurchased and retired (in shares)   278 140 101
Total purchase price of shares repurchased and retired   $ 4,312 $ 2,374 $ 1,675
Common Stock | Other authorized repurchases        
Class of Stock [Line Items]        
Total number of shares repurchased and retired (in shares)   55 0 0
Total purchase price of shares repurchased and retired $ 800 $ 800 $ 0 $ 0