Year Ended December 31, | |||||||||
(in millions, except per share data) | 2013 | 2012 | 2011 | ||||||
Net income | $ | 10,540 | $ | 1,009 | $ | 854 | |||
Basic weighted average shares outstanding | 849 | 845 | 838 | ||||||
Dilutive effects of share based awards | 9 | 5 | 6 | ||||||
Diluted weighted average shares outstanding | 858 | 850 | 844 | ||||||
Basic earnings per share | $ | 12.41 | $ | 1.20 | $ | 1.02 | |||
Diluted earnings per share | $ | 12.29 | $ | 1.19 | $ | 1.01 | |||
Antidilutive common stock equivalents excluded from diluted earnings per share | 8 | 18 | 17 | ||||||