Datasets:
| <table> | |
| <tr> | |
| <th></th> | |
| <th>2009</th> | |
| <th>2008</th> | |
| <th>2007</th> | |
| </tr> | |
| <tr> | |
| <td>Millions of shares</td> | |
| <td></td> | |
| <td></td> | |
| <td></td> | |
| </tr> | |
| <tr> | |
| <td>Basic weighted average common shares outstanding</td> | |
| <td>900</td> | |
| <td>883</td> | |
| <td>919</td> | |
| </tr> | |
| <tr> | |
| <td>Dilutive effect of:</td> | |
| <td></td> | |
| <td></td> | |
| <td></td> | |
| </tr> | |
| <tr> | |
| <td> Convertible senior notes premium (a)</td> | |
| <td>–</td> | |
| <td>22</td> | |
| <td>29</td> | |
| </tr> | |
| <tr> | |
| <td> Stock options</td> | |
| <td>2</td> | |
| <td>4</td> | |
| <td>7</td> | |
| </tr> | |
| <tr> | |
| <td>Diluted weighted average common shares outstanding</td> | |
| <td>902</td> | |
| <td>909</td> | |
| <td>955</td> | |
| </tr> | |
| </table> |