Condensed Consolidated Statements Of Equity - USD ($)
$ in Millions
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Loss [Member]
Noncontrolling Interests [Member]
Balance at Dec. 31, 2014 $ 36,024 $ 16 $ 28,937 $ 14,577 $ (8,073) $ 567
Net income 2,048     2,062   (14)
Other comprehensive income 538       530 8
Purchase of common stock (1,999)   (941) (1,058)    
Exercise of common stock warrants 41   41      
Stock based compensation 110   124 (14)    
Cash dividends paid on common stock (1,055)     (1,055)    
Dividends declared or paid to noncontrolling interests (56)         (56)
Other 19         19
Balance at Jun. 30, 2015 35,670 16 28,161 14,512 (7,543) 524
Balance at Dec. 31, 2015 40,323 15 27,607 20,285 (8,036) 452
Net income 4,781     4,819   (38)
Other comprehensive income 114       131 (17)
Issuance of common stock 290   290      
Purchase of common stock (300)   (167) (133)    
Exercise of common stock warrants 29 1 28      
Stock based compensation (32)   (24) (8)    
Cash dividends paid on common stock (1,178)     (1,178)    
Dividends declared or paid to noncontrolling interests (17)         (17)
Other (7)         (7)
Balance at Jun. 30, 2016 $ 44,003 $ 16 $ 27,734 $ 23,785 $ (7,905) $ 373