2.2.0.25falsefalse0512 - Disclosure - Segment and Related Information (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_SegmentAndRelatedInformationTablesAbstractsofalsenadurationSegment And Related Information.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse| 1falsefalsefalse00falsefalsefalsefalsefalse | Otherxbrli:stringItemTypestringSegment And Related Information.falsefalse
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<!-- Begin Block Tagged Note Table: SO-20101231_note12_table1 - us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock-->
<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 nowrap="nowrap" align="center" colspan="15" style="border-bottom: 1px solid #000000"><b>Electric Utilities</b></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>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Traditional</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </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"> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </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>Southern</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="3"><b>All</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Companies</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Power</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Eliminations</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Total</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Other</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Eliminations</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Consolidated</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="27"><i style="font-size: 8pt">(in millions)</i></td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>2010</b>
</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">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>Operating revenues</b>
</div></td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>16,713</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>1,129</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"><b>$</b></td>
<td align="right"><b>(468</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>17,374</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>162</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"><b>$</b></td>
<td align="right"><b>(80</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>17,456</b></td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td nowrap="nowrap">
<div style="margin-left:15px; text-indent:-15px"><b>Depreciation and amortization</b>
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>1,375</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>119</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>1,494</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>19</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>1,513</b></td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>Interest income</b>
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>22</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>22</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>3</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right"><b>(1</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td> </td>
<td align="right"><b>24</b></td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>Interest expense</b>
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>757</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>76</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>833</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>62</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>895</b></td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>Income taxes</b>
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>1,039</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>77</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>1,116</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right"><b>(90</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>1,026</b></td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>Segment net income (loss)*</b>
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>1,859</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>130</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>1,989</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right"><b>(10</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right"><b>(4</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td> </td>
<td align="right"><b>1,975</b></td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>Total assets</b>
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>51,145</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>3,276</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right"><b>(128</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td> </td>
<td align="right"><b>54,293</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>1,279</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right"><b>(540</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td> </td>
<td align="right"><b>55,032</b></td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>Gross property additions</b>
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>4,029</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>300</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>4,329</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>114</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right"><b>4,443</b></td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="29" align="left" style="border-top: 1px solid #000000"> </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">
<td>
<div style="margin-left:15px; text-indent:-15px">2009
</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">Operating revenues
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">15,304</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">947</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(609</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">15,642</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">165</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(64</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">15,743</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Depreciation and amortization
</div></td>
<td> </td>
<td> </td>
<td align="right">1,378</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">98</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,476</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">27</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,503</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Interest income
</div></td>
<td> </td>
<td> </td>
<td align="right">21</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">21</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(1</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">23</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Interest expense
</div></td>
<td> </td>
<td> </td>
<td align="right">749</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">85</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">834</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">71</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">905</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Income taxes
</div></td>
<td> </td>
<td> </td>
<td align="right">902</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">86</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">988</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(92</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">896</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Segment net income (loss)*
</div></td>
<td> </td>
<td> </td>
<td align="right">1,679</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">156</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,835</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(193</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">1</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,643</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Total assets
</div></td>
<td> </td>
<td> </td>
<td align="right">48,403</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,043</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(143</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">51,303</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,223</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(480</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">52,046</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Gross property additions
</div></td>
<td> </td>
<td> </td>
<td align="right">4,568</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">331</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">4,899</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">14</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">4,913</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="29" align="left" style="border-top: 1px solid #000000"> </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">2008
</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">
<td>
<div style="margin-left:15px; text-indent:-15px">Operating revenues
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">16,521</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">1,314</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(835</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">17,000</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">182</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(55</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">17,127</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Depreciation and amortization
</div></td>
<td> </td>
<td> </td>
<td align="right">1,325</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">89</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,414</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">29</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,443</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Interest income
</div></td>
<td> </td>
<td> </td>
<td align="right">32</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">33</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">33</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Interest expense
</div></td>
<td> </td>
<td> </td>
<td align="right">689</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">83</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">772</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">94</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">866</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Income taxes
</div></td>
<td> </td>
<td> </td>
<td align="right">944</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">93</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,037</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(122</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">915</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Segment net income (loss)*
</div></td>
<td> </td>
<td> </td>
<td align="right">1,703</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">144</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,847</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(104</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(1</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">1,742</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Total assets
</div></td>
<td> </td>
<td> </td>
<td align="right">44,794</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2,813</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(139</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">47,468</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,407</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(528</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">48,347</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Gross property additions
</div></td>
<td> </td>
<td> </td>
<td align="right">4,058</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">50</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">4,108</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">14</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">4,122</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 style="margin-top: 3pt">
<table width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; text-align: left">
<tr>
<td width="3%"></td>
<td width="1%"></td>
<td width="96%"></td>
</tr>
<tr valign="top">
<td nowrap="nowrap" align="left">*</td>
<td> </td>
<td>After dividends on preferred and preference stock of subsidiaries</td>
</tr>
</table>
</div>
</div>
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<!-- Begin Block Tagged Notefalsefalsefalsefalsefalse | Otherus-types:textBlockItemTypestringThis element may be used to capture the complete disclosure about the profit or loss and total assets for each reportable segment, as a single block of text. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-Paragraph 27, 28
falsefalse
4false0so_FinancialDataForProductsAndServicesTextBlocksofalsenadurationFinancial data for products and services.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_note12_table2 - so:FinancialDataForProductsAndServicesTextBlock-->
<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="7%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td nowrap="nowrap" align="center" colspan="17" style="border-bottom: 1px solid #000000"><b>Electric Utilities’ Revenues</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td nowrap="nowrap" align="left" style="border-bottom: 1px solid #000000"><b>Year</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Retail</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Wholesale</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Other</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Total</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="15"><i style="font-size: 8pt">(in millions)</i></td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>2010</b>
</div></td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>14,791</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>1,994</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>589</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>17,374</b></td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">2009
</div></td>
<td> </td>
<td> </td>
<td align="right">13,307</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,802</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">533</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">15,642</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">2008
</div></td>
<td> </td>
<td> </td>
<td align="right">14,055</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2,400</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">545</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">17,000</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
</div>
<!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" -->
<!-- Begin Block Tagged Notefalsefalsefalsefalsefalse | Otherus-types:textBlockItemTypestringFinancial data for products and services.No authoritative reference available.falsefalse
13Segment and Related Information (Tables)UnKnownUnKnownUnKnownUnKnownfalsetrue