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USD ($)
USD ($) / shares
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<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 10pt"><b>9. Stockholders’ equity</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt"><i>Stock repurchase program</i>
</div>
<div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent:8%">The following table is a summary of activity under our stock repurchase program (in millions):
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="45%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="7%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="7%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="7%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="7%"> </td>
<td></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: 1px solid #000000"><b>2011</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Shares</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Dollars</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Shares</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Dollars</b></td>
<td></td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">First quarter
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">29.1</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">1,684</td>
<td></td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td></td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent:8%">In December 2009, the Board of Directors authorized us to repurchase up to an additional $5.0
billion of our common stock of which a total of $2.2 billion remains available as of March 31,
2011. In addition, in April 2011, the Board of Directors authorized us to repurchase up to an
additional $5.0 billion of our common stock.
</div>
</div>
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