Datasets:
| <table> | |
| <tr> | |
| <th rowspan="2"></th> | |
| <th colspan="3">Year Ended December 31</th> | |
| </tr> | |
| <tr> | |
| <th>2016</th> | |
| <th>2015</th> | |
| <th>2014</th> | |
| </tr> | |
| <tr> | |
| <td>Millions of dollars</td> | |
| <td></td> | |
| <td></td> | |
| <td></td> | |
| </tr> | |
| <tr> | |
| <td>Stock-based compensation cost</td> | |
| <td>$ 262</td> | |
| <td>$ 294</td> | |
| <td>$ 298</td> | |
| </tr> | |
| <tr> | |
| <td>Tax benefit</td> | |
| <td>(77)</td> | |
| <td>(99)</td> | |
| <td>(90)</td> | |
| </tr> | |
| <tr> | |
| <td>Stock-based compensation cost, net of tax</td> | |
| <td>$ 185</td> | |
| <td>$ 195</td> | |
| <td>$ 208</td> | |
| </tr> | |
| </table> |