|
Income per Share (Details)
In Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2011
|
Jun. 30, 2010
|
Jun. 30, 2011
|
Jun. 30, 2010
|
|
| Earnings Per Share [Abstract] | Â | Â | Â | Â |
| Basic weighted average common shares outstanding (in shares) | 916 | 906 | 915 | 906 |
| Dilutive effect of stock options (in shares) | 5 | 3 | 5 | 2 |
| Diluted weighted average common shares outstanding (in shares) | 921 | 909 | 920 | 908 |
| Antidilutive options excluded from the computation of diluted income per share (in shares) | 2 | 6 | 1 | 6 |