1.0.0.3
false
Fair Value Measurements
false
1
$
false
false
Shares
Standard
http://www.xbrl.org/2003/instance
shares
xbrli
0
USD
Standard
http://www.xbrl.org/2003/iso4217
USD
iso4217
0
USDEPS
Divide
http://www.xbrl.org/2003/iso4217
USD
iso4217
http://www.xbrl.org/2003/instance
shares
xbrli
0
2
0
so_FairValueMeasurementsAbstract
so
false
na
duration
string
Fair Value Measurements.
false
false
false
false
false
true
false
false
false
|
1
false
false
0
0
false
false
|
Fair Value Measurements.
false
3
1
us-gaap_FairValueDisclosuresTextBlock
us-gaap
true
na
duration
string
No definition available.
false
false
false
false
false
false
false
false
false
|
1
false
false
0
0
<!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" -->
<!-- Begin Block Tagged Note 10 - us-gaap:FairValueDisclosuresTextBlock-->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>10. FAIR VALUE MEASUREMENTS</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">Fair value measurements are based on inputs of observable and unobservable market data that a
market participant would use in pricing the asset or liability. The use of observable inputs is
maximized where available and the use of unobservable inputs is minimized for fair value
measurement and reflects a three-tier fair value hierarchy that prioritizes inputs to valuation
techniques used for fair value measurement.
</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="3%" nowrap="nowrap" align="left"><b>•</b></td>
<td width="1%"> </td>
<td>Level 1 consists of observable market data in an active market for identical assets or
liabilities.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="3%" nowrap="nowrap" align="left"><b>•</b></td>
<td width="1%"> </td>
<td>Level 2 consists of observable market data, other than that included in Level 1, that is
either directly or indirectly observable.</td>
</tr>
<tr>
<td style="font-size: 6pt"> </td>
</tr>
<tr valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<td width="3%" nowrap="nowrap" align="left"><b>•</b></td>
<td width="1%"> </td>
<td>Level 3 consists of unobservable market data. The input may reflect the assumptions of
the Company of what a market participant would use in pricing an asset or liability. If
there is little available market data, then the Company’s own assumptions are the best
available information.</td>
</tr>
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">In the case of multiple inputs being used in a fair value measurement, the lowest level input
that is significant to the fair value measurement represents the level in the fair value
hierarchy in which the fair value measurement is reported.
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
<!-- PAGEBREAK -->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 0pt">
<b>
</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">As of December 31, 2009, assets and liabilities measured at fair value on a recurring basis
during the period, together with the level of the fair value hierarchy in which they fall, are
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="52%"> </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> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="11" style="border-bottom: 1px solid #000000"><b>Fair Value Measurements Using</b></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>Quoted Prices</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>in Active</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Significant</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> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Markets for</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Other</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Significant</b></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>Identical</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Observable</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Unobservable</b></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>Assets</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Inputs</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Inputs</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td nowrap="nowrap" align="left" style="border-bottom: 1px solid #000000"><b>As of December 31, 2009:</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>(Level 1)</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>(Level 2)</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>(Level 3)</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> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left" colspan="6" style="font-size: 8pt">    <i>(in millions)</i></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">Assets:
</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>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Energy-related derivatives
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">7</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">7</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Interest rate derivatives
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Nuclear decommissioning trusts:<sup style="font-size: 85%; vertical-align: text-top">(a)</sup>
</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>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:45px; text-indent:-15px">Domestic equity
</div></td>
<td> </td>
<td> </td>
<td align="right">724</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">774</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:45px; text-indent:-15px">U.S. Treasury and government agency
securities
</div></td>
<td> </td>
<td> </td>
<td align="right">11</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">36</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">47</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:45px; text-indent:-15px">Municipal bonds
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">23</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">23</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:45px; text-indent:-15px">Corporate bonds
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">137</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">137</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:45px; text-indent:-15px">Mortgage and asset backed securities
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">65</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">65</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:45px; text-indent:-15px">Other
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">22</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">22</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Cash equivalents and restricted cash
</div></td>
<td> </td>
<td> </td>
<td align="right">623</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">623</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Other
</div></td>
<td> </td>
<td> </td>
<td align="right">3</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">48</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">35</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">86</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:30px; text-indent:-15px">Total
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">1,361</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">391</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">35</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">1,787</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 3px double #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>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Liabilities:
</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>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Energy-related derivatives
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">185</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">185</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Interest rate derivatives
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">6</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">6</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:30px; text-indent:-15px">Total
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">191</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">191</td>
<td> </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 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">(a)</td>
<td> </td>
<td>Excludes receivables related to investment income, pending investment sales,
and payables related to pending investment purchases.</td>
</tr>
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">Energy-related derivatives and interest rate derivatives primarily consist of
over-the-counter contracts. See Note 11 for additional information. The nuclear
decommissioning trust funds are invested in a diversified mix of equity and fixed income
securities. See Note 1 under “Nuclear Decommissioning” for additional information. The cash
equivalents and restricted cash consist of securities with original maturities of 90 days or
less. “Other” represents marketable securities and certain deferred compensation funds also
invested in various marketable securities. All of these financial instruments and investments
are valued primarily using the market approach.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">As of December 31, 2009, the fair value measurements of investments calculated at net asset
value per share (or its equivalent), as well as the nature and risks of those investments, are
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="52%"> </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> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 0px solid #000000"><b>Fair</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 0px solid #000000"><b>Unfunded</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 0px solid #000000"><b>Redemption</b></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"><b>Redemption</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td nowrap="nowrap" align="left" style="border-bottom: 1px solid #000000"><b>As of December 31, 2009:</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Value</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Commitments</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Frequency</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Notice Period</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3" style="font-size: 8pt"><i>(in millions)</i></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>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Nuclear decommissioning trusts:
</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>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Corporate bonds – commingled funds
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">14</td>
<td> </td>
<td> </td>
<td colspan="3" align="center">None</td>
<td> </td>
<td colspan="3" align="center">Daily</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">1 to 3 days</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Other – commingled funds
</div></td>
<td> </td>
<td> </td>
<td align="right">13</td>
<td> </td>
<td> </td>
<td colspan="3" align="center">None</td>
<td> </td>
<td colspan="3" align="center">Daily</td>
<td> </td>
<td colspan="3" align="center"><font style="white-space: nowrap">Not applicable</font></td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Trust owned life insurance
</div></td>
<td> </td>
<td> </td>
<td align="right">78</td>
<td> </td>
<td> </td>
<td colspan="3" align="center">None</td>
<td> </td>
<td colspan="3" align="center">Daily</td>
<td> </td>
<td colspan="3" align="center">15 days</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Cash equivalents and restricted cash:
</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>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Money market funds
</div></td>
<td> </td>
<td> </td>
<td align="right">623</td>
<td> </td>
<td> </td>
<td colspan="3" align="center">None</td>
<td> </td>
<td colspan="3" align="center">Daily</td>
<td> </td>
<td colspan="3" align="center">Not applicable</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> </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:30px; text-indent:-15px">Deferred compensation — money market
funds
</div></td>
<td> </td>
<td> </td>
<td align="right">3</td>
<td> </td>
<td> </td>
<td colspan="3" align="center">None</td>
<td> </td>
<td colspan="3" align="center">Daily</td>
<td> </td>
<td colspan="3" align="center">Not applicable</td>
</tr>
<!-- End Table Body -->
</table>
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
<!-- PAGEBREAK -->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 0pt">
<b>
</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">The commingled funds in the nuclear decommissioning trusts invest primarily in a
diversified portfolio of investment high grade money market instruments, including, but not
limited to, commercial paper, notes, repurchase agreements, and other evidences of indebtedness
with a maturity not exceeding 13 months from the date of purchase. The commingled funds will,
however, maintain a dollar-weighted average portfolio maturity of 90 days or less. The assets
may be longer term investment grade fixed income obligations having a maximum five year final
maturity with put features or floating rates with a reset rate date of 13 months or less. The
primary objective for the commingled funds is a high level of current income consistent with
stability of principal and liquidity.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">One of the nuclear decommissioning trusts includes investments in Trust-Owned Life Insurance
(TOLI). The taxable nuclear decommissioning trust invests in the TOLI in order to minimize the
impact of taxes on the portfolio and can draw on the value of the TOLI through death proceeds,
loans against the cash surrender value, and/or the cash surrender value, subject to legal
restrictions. The amounts reported in the tables above reflect the fair value of investments
the insurer has made in relation to the TOLI agreements. The nuclear decommissioning trust does
not own the underlying investments, but the fair value of the investments approximates the cash
surrender value of the TOLI policies. The investments made by the insurer are in commingled
funds. The commingled funds primarily include investments in domestic and international equity
securities and predominantly high-quality fixed income securities. These fixed income
securities include U.S. Treasury and government agency fixed income securities, non-U.S.
government and agency fixed income securities, domestic and foreign corporate fixed income
securities, and, to some degree, mortgage and asset backed securities. The passively managed
funds seek to replicate the performance of a related index. The actively managed funds seek to
exceed the performance of a related index through security analysis and selection.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">The money market funds are short-term investments of excess funds in various money market mutual
funds, which are portfolios of short-term debt securities. The money market funds are regulated
by the Securities and Exchange Commission and typically receive the highest rating from credit
rating agencies. Regulatory and rating agency requirements for money market funds include
minimum credit ratings and maximum maturities for individual securities and a maximum weighted
average portfolio maturity. Redemptions are available on a same day basis up to the full amount
of the Company’s investment in the money market funds.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">Changes in the fair value measurement of the Level 3 items using significant unobservable inputs
for Southern Company at December 31, 2009 and 2008 are 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="88%"> </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 style="border-bottom: 0px solid #000000"> </td>
<td style="border-bottom: 0px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Level 3</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>Other</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3" style="font-size: 8pt"><i>(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">Beginning balance at December 31, 2008
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">35</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Total gains (losses) — realized/unrealized:
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:45px; text-indent:-15px">Included in earnings
</div></td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(3</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:45px; text-indent:-15px">Included in other comprehensive income
</div></td>
<td> </td>
<td> </td>
<td align="right">3</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="5" 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>Ending balance at December 31, 2009</b>
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">35</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="5" 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">Unrealized losses of $3 million were included in earnings during 2009 relating to assets still held
at December 31, 2009 and are recorded in “depreciation and amortization.”
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">As of December 31, 2009, other financial instruments for which the carrying amount did not equal
fair value were as follows:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="76%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Carrying Amount</b></td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="3" style="border-bottom: 1px solid #000000"><b>Fair Value</b></td>
</tr>
<tr style="font-size: 10pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="7" style="font-size: 8pt"><i>(in millions)</i></td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Long-term debt:
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:75px; text-indent:-15px"><b>2009</b>
</div></td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>19,145</b></td>
<td> </td>
<td> </td>
<td align="right"><b>$</b></td>
<td align="right"><b>19,567</b></td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:75px; text-indent:-15px">2008
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">17,327</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">17,114</td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">The fair values were based on either closing market prices (Level 1) or closing prices of
comparable instruments (Level 2).
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
<!-- PAGEBREAK -->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 0pt">
<b>
</b>
</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 Note
false
false
|
No definition available.
No authoritative reference available.
false
false
1
2
false
UnKnown
UnKnown
UnKnown
false
true