2.2.0.25falsefalse0501 - Disclosure - Summary of Significant Accounting Policies (Tables)truefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010
USD ($)
USD ($) / shares
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3false0so_RegulatoryAssetsAndLiabilitiesTextBlocksofalsenadurationRegulatory Assets and Liabilities.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_note1_table1 - so:RegulatoryAssetsAndLiabilitiesTextBlock-->
<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="64%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 1px solid #000000"> </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="right" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000">2009</td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000">Note</td>
<td style="border-bottom: 1px solid #000000"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="7"><i style="font-size: 8pt">(in millions)</i></td>
<td> </td>
<td> </td>
<td> </td>
<td> </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">Deferred income tax charges
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>1,204</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">1,048</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(a</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Deferred income tax charges — Medicare subsidy
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>82</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(k</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Asset retirement obligations-asset
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>79</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">125</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(a,i</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Asset retirement obligations-liability
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(82</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(47</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(a,i</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Other cost of removal obligations
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(1,188</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(1,307</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(a</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Deferred income tax credits
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(237</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(249</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(a</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Loss on reacquired debt
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>274</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">255</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(b</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Vacation pay
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>151</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">145</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(c,i</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Under recovered regulatory clause revenues
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>27</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">40</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(d</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Over recovered regulatory clause revenues
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(40</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(218</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(d</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Building leases
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>45</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">47</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(f</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Generating plant outage costs
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>31</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">39</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(d</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Under recovered storm damage costs
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>8</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">22</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(d</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Property damage reserves
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(216</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(157</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(h</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Fuel hedging-asset
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>211</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">187</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(d</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Fuel hedging-liability
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(7</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(2</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(d</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Other assets
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>171</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">156</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(d</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Environmental remediation-asset
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>67</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">68</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(h,i</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Environmental remediation-liability
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(10</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(13</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(h</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Environmental compliance cost recovery
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(96</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(g</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Other liabilities
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(13</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(51</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(j</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Retiree benefit plans
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>2,041</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2,268</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(e,i</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Total assets (liabilities), net
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>2,598</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">2,260</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">Note: The recovery and amortization periods for these regulatory assets and (liabilities) are as follows:
</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">(a)</td>
<td width="1%"> </td>
<td>Asset retirement and removal assets and liabilities are recorded, deferred income tax assets are recovered, and
deferred income tax liabilities are amortized over the related property lives, which may range up to 65 years. Asset
retirement and other cost of removal liabilities will be settled and trued up following completion of the related
activities. Other cost of removal obligations include $92 million at Georgia Power that will be amortized over a
three-year period beginning January 1, 2011 in accordance with a Georgia PSC order. See Note 3 under “Retail
Regulatory Matters — Georgia Power — Retail Rate Plans” for additional information.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="1%" nowrap="nowrap" align="left">(b)</td>
<td width="1%"> </td>
<td>Recovered over either the remaining life of the original issue or, if refinanced, over the life of the new issue,
which may range up to 50 years.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="1%" nowrap="nowrap" align="left">(c)</td>
<td width="1%"> </td>
<td>Recorded as earned by employees and recovered as paid, generally within one year.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="1%" nowrap="nowrap" align="left">(d)</td>
<td width="1%"> </td>
<td>Recorded and recovered or amortized as approved by the appropriate state PSCs over periods not exceeding 10 years.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="1%" nowrap="nowrap" align="left">(e)</td>
<td width="1%"> </td>
<td>Recovered and amortized over the average remaining service period which may range up to 15 years. See Note 2 for
additional information.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="1%" nowrap="nowrap" align="left">(f)</td>
<td width="1%"> </td>
<td>Recovered over the remaining lives of the buildings through 2026.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="1%" nowrap="nowrap" align="left">(g)</td>
<td width="1%"> </td>
<td>Deferred revenue associated with the levelization of Georgia Power’s environmental compliance cost recovery
(ECCR) tariff revenue for the years 2008 through 2010 in accordance with a Georgia PSC order.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="1%" nowrap="nowrap" align="left">(h)</td>
<td width="1%"> </td>
<td>Recovered as storm restoration or environmental remediation expenses are incurred.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="1%" nowrap="nowrap" align="left">(i)</td>
<td width="1%"> </td>
<td>Not earning a return as offset in rate base by a corresponding asset or liability.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="1%" nowrap="nowrap" align="left">(j)</td>
<td width="1%"> </td>
<td>Recorded and recovered or amortized as approved by the appropriate state PSC over periods up to the life of the
plant or the remaining life of the original issue or, if refinanced, over the life of the new issue which may range
up to 50 years.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="1%" nowrap="nowrap" align="left">(k)</td>
<td width="1%"> </td>
<td>Recovered and amortized as approved by the appropriate state PSCs over periods not exceeding 14 years. See Note
5 under “Current and Deferred Income Taxes” for additional information.</td>
</tr>
</table>
</div>
</div>
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<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="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </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="right" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000">2009</td>
<td style="border-bottom: 1px solid #000000"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6"><i style="font-size: 8pt">(in millions)</i></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">Generation
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>30,121</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">28,204</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Transmission
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>7,835</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">7,380</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Distribution
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>14,870</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">14,335</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">General
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>3,116</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2,917</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Plant acquisition adjustment
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>43</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">43</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Utility plant in service
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>55,985</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">52,879</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Information technology equipment and software
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>216</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">182</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Communications equipment
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>423</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">423</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Other
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>107</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">104</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Other plant in service
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>746</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">709</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Total plant in service
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>56,731</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">53,588</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 3px double #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:textBlockItemTypestringDisclosure of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, building and production equipment. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures. This element may be used as a single block of text to include the entire PPE disclosure, including data and tables.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 5
falsefalse
5false0us-gaap_AssetRetirementObligationDisclosureTextBlockus-gaaptruenadurationNo definition available.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_note1_table3 - us-gaap:AssetRetirementObligationDisclosureTextBlock-->
<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="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </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="right" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000">2009</td>
<td style="border-bottom: 1px solid #000000"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6"><i style="font-size: 8pt">(in millions)</i></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">Balance at beginning of year
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>1,206</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">1,185</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Liabilities incurred
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Liabilities settled
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(16</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(10</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Accretion
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>78</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">77</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Cash flow revisions
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(2</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(48</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Balance at end of year
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>1,266</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">1,206</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 3px double #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:textBlockItemTypestringDescription of the asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. This element may be used for all the disclosures related to asset retirement obligations.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 143
-Paragraph 22
falsefalse
6false0so_AccumulatedProvisionsForDecommissioningTextBlocksofalsenadurationAccumulated Provisions For Decommissioning.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_note1_table4 - so:AccumulatedProvisionsForDecommissioningTextBlock-->
<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="64%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </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="right" colspan="2" style="border-bottom: 1px solid #000000"><b>Plant Farley</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000"><b>Plant Hatch</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000"><b>Plant Vogtle</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="10"><i style="font-size: 8pt">(in millions)</i></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">External trust funds
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">553</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">360</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">206</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Internal reserves
</div></td>
<td> </td>
<td> </td>
<td align="right">24</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Total
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">577</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">360</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">206</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 3px double #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:textBlockItemTypestringAccumulated Provisions For Decommissioning.No authoritative reference available.falsefalse
7false0so_EstimatedCostOfDecomissioningTextBlocksofalsenadurationEstimated Cost Of Decomissioning.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_note1_table5 - so:EstimatedCostOfDecomissioningTextBlock-->
<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="64%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </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="right" colspan="2" style="border-bottom: 1px solid #000000"><b>Plant Farley</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000"><b>Plant Hatch</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000"><b>Plant Vogtle</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Decommissioning periods:
</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>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:45px; text-indent:-15px">Beginning year
</div></td>
<td> </td>
<td> </td>
<td align="right">2037</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2034</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2047</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:45px; text-indent:-15px">Completion year
</div></td>
<td> </td>
<td> </td>
<td align="right">2065</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2063</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2067</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td> </td>
<td> </td>
<td colspan="11" align="center"><i style="font-size: 8pt">(in millions)</i><br /></td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Site study costs:
</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>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:45px; text-indent:-15px">Radiated structures
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">1,060</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">583</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">500</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:45px; text-indent:-15px">Non-radiated structures
</div></td>
<td> </td>
<td> </td>
<td align="right">72</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">46</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">71</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Total
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">1,132</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">629</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">571</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 3px double #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:textBlockItemTypestringEstimated Cost Of Decomissioning.No authoritative reference available.falsefalse
8false0so_NetInvestmentsFromLeveragedLeaseTextBlocksofalsenadurationNet Investments From Leveraged lease.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_note1_table6 - so:NetInvestmentsFromLeveragedLeaseTextBlock-->
<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="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </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="right" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000">2009</td>
<td style="border-bottom: 1px solid #000000"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6"><i style="font-size: 8pt">(in millions)</i></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">Net rentals receivable
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>475</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">487</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Unearned income
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(207</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(218</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Investment in leveraged leases
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>268</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">269</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Deferred taxes from leveraged leases
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(223</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(211</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net investment in leveraged leases
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>45</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">58</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 3px double #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:textBlockItemTypestringNet Investments From Leveraged lease.No authoritative reference available.falsefalse
9false0so_ComponentsOfIncomeFromLeveragedLeaseTextBlocksofalsenadurationComponents Of Income From Leveraged lease.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_note1_table7 - so:ComponentsOfIncomeFromLeveragedLeaseTextBlock-->
<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="64%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </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="right" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000">2009</td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000">2008</td>
<td style="border-bottom: 1px solid #000000"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="10"><i style="font-size: 8pt">(in millions)</i></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">Pretax leveraged lease income
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>4</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">12</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">14</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Income tax expense
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(3</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(5</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(6</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net leveraged lease income
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>1</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">7</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">8</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">Southern Company’s net investment in international leveraged leases consists of the following at
December 31:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000">2009</td>
<td style="border-bottom: 1px solid #000000"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6"><i style="font-size: 8pt">(in millions)</i></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net rentals receivable
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>733</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">734</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Unearned income
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(377</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(393</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Investment in leveraged leases
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>356</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">341</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Current taxes payable
</div></td>
<td> </td>
<td> </td>
<td align="right"><b>—</b></td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Deferred taxes from leveraged leases
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(40</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(40</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Net investment in leveraged leases
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>316</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">301</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="9" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">A summary of the components of income from international leveraged leases was as follows:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="64%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000">2009</td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="2" style="border-bottom: 1px solid #000000">2008</td>
<td style="border-bottom: 1px solid #000000"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="10"><i style="font-size: 8pt">(in millions)</i></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Pretax leveraged lease income (loss)
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>14</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">19</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(99</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Income tax benefit (expense)
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right"><b>(5</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(7</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">35</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net leveraged lease income (loss)
</div></td>
<td> </td>
<td align="left"><b>$</b></td>
<td align="right"><b>9</b></td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">12</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(64</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td colspan="13" align="left" style="border-top: 3px double #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:textBlockItemTypestringComponents Of Income From Leveraged lease.No authoritative reference available.falsefalse
10false0so_AccumulatedOtherComprehensiveIncomeLossbalancesNetOfTaxEffectsTextBlocksofalsenadurationAccumulated other comprehensive income (loss) balances, net of tax effects.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_note1_table8 - so:AccumulatedOtherComprehensiveIncomeLossbalancesNetOfTaxEffectsTextBlock-->
<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="32%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="2%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="2%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="2%"> </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>Pension and Other</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Accumulated Other</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Qualifying</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Marketable</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Postretirement</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Comprehensive</b></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>Hedges</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="right" colspan="3" style="border-bottom: 1px solid #000000"><b>Securities</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Benefit Plans</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 (Loss)</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">Balance at December 31, 2009
</div></td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(49</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">10</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(49</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(88</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Current period change
</div></td>
<td> </td>
<td> </td>
<td align="right">14</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(3</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">7</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">18</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px"><b>Balance at December 31, 2010</b>
</div></td>
<td> </td>
<td nowrap="nowrap" align="right"><b>$</b></td>
<td align="right"><b>(35</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>7</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"><b>$</b></td>
<td align="right"><b>(42</b></td>
<td nowrap="nowrap"><b>)</b></td>
<td> </td>
<td nowrap="nowrap" align="right"><b>$</b></td>
<td align="right"><b>(70</b></td>
<td nowrap="nowrap"><b>)</b></td>
</tr>
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 3px double #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:textBlockItemTypestringAccumulated other comprehensive income (loss) balances, net of tax effects.No authoritative reference available.falsefalse
19Summary of Significant Accounting Policies (Tables)UnKnownUnKnownUnKnownUnKnownfalsetrue