The weighted average number of shares outstanding used to compute earnings per common share were as follows (in millions):
| 2013 | 2012 | 2011 | ||||||||||
|
Weighted average common shares outstanding for basic computations |
320.9 | 323.7 | 335.9 | |||||||||
|
Weighted average dilutive effect of equity awards |
5.6 | 4.7 | 4.0 | |||||||||
|
Weighted average common shares outstanding for diluted computations |
326.5 | 328.4 | 339.9 | |||||||||