v2.4.0.8
Earnings Per Share (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Earnings Per Share Details [Abstract]        
Net income $ 1,291 $ 1,106 $ 2,379 $ 2,063
Weighted-Average Number Of Shares Outstanding [Abstract]        
Basic 901.5 930.6 904.8 933.1
Dilutive effect of stock options 1.8 2.6 2.2 2.7
Dilutive effect of retention shares and units 1.7 2.1 1.7 2.3
Diluted 905.0 935.3 908.7 938.1
Earnings per share - basic $ 1.43 $ 1.19 $ 2.63 $ 2.21
Earnings per share - diluted $ 1.43 $ 1.18 $ 2.62 $ 2.20
Stock options excluded as their inclusion would be antidilutive 1.0 1.1 0.8 1.0