2.2.0.25falsefalse0513 - Disclosure - Quarterly Financial Information Unaudited (Tables)truefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010
USD ($)
USD ($) / shares
$Jan-01-2010_Dec-31-2010http://www.sec.gov/CIK0000092122duration2010-01-01T00:00:002010-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0so_QuarterlyFinancialInformationUnauditedTablesAbstractsofalsenadurationQuarterly financial information unaudited.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse| 1falsefalsefalse00falsefalsefalsefalsefalse | Otherxbrli:stringItemTypestringQuarterly financial information unaudited.falsefalse
3false0so_SummarizedQuarterlyFinancialDataTextBlocksofalsenadurationSummarized quarterly financial data.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel| 1falsefalsefalse00<!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" -->
<!-- Begin Block Tagged Note Table: SO-20101231_note13_table1 - so:SummarizedQuarterlyFinancialDataTextBlock-->
<div align="left" style="font-size: 10pt; font-family: 'Times New Roman',Times,serif">
<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="23%"> </td>
<td width="4%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="4%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="4%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="4%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="4%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="4%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="4%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Consolidated</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="15"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Net Income After</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="15"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Dividends on</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="15" style="border-bottom: 1px solid #000000"><b>Per Common Share</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Preferred and</b></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="7"><b>Trading</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Operating</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Operating</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Preference Stock</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Basic</b></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="7" style="border-bottom: 1px solid #000000"><b>Price Range</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td nowrap="nowrap" align="left" style="border-bottom: 1px solid #000000"><b>Quarter Ended</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Revenues</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Income</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>of Subsidiaries</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Earnings</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Dividends</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>High</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Low</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td nowrap="nowrap" align="left"> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="11"><i style="font-size: 8pt">(in millions)</i></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>March 2010</b>
</div></td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>4,157</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>922</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>495</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>0.60</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>0.4375</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>33.73</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>30.85</b></td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>June 2010</b>
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>4,208</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>951</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>510</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>0.62</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>0.4550</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>35.45</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>32.04</b></td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>September 2010</b>
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>5,320</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>1,459</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>817</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>0.98</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>0.4550</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>37.73</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>33.00</b></td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>December 2010</b>
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>3,771</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>470</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>153</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>0.18</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>0.4550</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>38.62</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>37.10</b></td>
<td> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">March 2009
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">3,666</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">490</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">126</td>
<td nowrap="nowrap"><sup style="font-size: 85%; vertical-align: text-top">*</sup></td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">0.16</td>
<td nowrap="nowrap"><sup style="font-size: 85%; vertical-align: text-top">*</sup></td>
<td> </td>
<td align="right">$</td>
<td align="right">0.4200</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">37.62</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">26.48</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">June 2009
</div></td>
<td> </td>
<td> </td>
<td align="right">3,885</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">886</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">478</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">0.61</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">0.4375</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">32.05</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">27.19</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">September 2009
</div></td>
<td> </td>
<td> </td>
<td align="right">4,682</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,415</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">790</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">0.99</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">0.4375</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">32.67</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">30.27</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">December 2009
</div></td>
<td> </td>
<td> </td>
<td align="right">3,510</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">477</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">249</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">0.31</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">0.4375</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">34.47</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">30.89</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="29" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">Southern Company’s business is influenced by seasonal weather conditions.
</div>
<div style="margin-top: 6pt">
<table width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; text-align: left">
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="1%" nowrap="nowrap" align="left">*</td>
<td width="1%"> </td>
<td>Southern Company’s MC Asset Recovery litigation settlement reduced earnings by $202
million, or 25 cents per share, during the first quarter 2009.</td>
</tr>
</table>
</div>
</div>
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12Quarterly Financial Information Unaudited (Tables)UnKnownUnKnownUnKnownUnKnownfalsetrue