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USD ($)

USD ($) / shares

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   &lt;!-- Begin Block Tagged Note 10 - us-gaap:DebtDisclosureTextBlock--&gt;
   &lt;div style="font-family: 'Times New Roman',Times,serif"&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 12pt"&gt;&lt;b&gt;NOTE 10. INDEBTEDNESS&lt;/b&gt;
   &lt;/div&gt;
   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;At March&amp;#160;31, 2011, we had $1.7&amp;#160;billion of committed revolving credit facilities with
   commercial banks. These facilities contain certain covenants which, among other things, require
   the maintenance of a funded indebtedness to total capitalization ratio (a defined formula per each
   agreement), restrict certain merger transactions or the sale of all or substantially all of our
   assets or a significant subsidiary and limit the amount of subsidiary indebtedness. Upon the
   occurrence of certain events of default, our obligations under the facilities may be accelerated.
   Such events of default include payment defaults to lenders under the facilities, covenant defaults
   and other customary defaults. At March&amp;#160;31, 2011, we were in compliance with all of the facilities&amp;#8217;
   covenants. There were no direct borrowings under the committed credit facilities during the
   quarter ended March&amp;#160;31, 2011. We also have a commercial paper program under which we may issue up
   to $1.0&amp;#160;billion in commercial paper with maturity of no more than 270&amp;#160;days. To the extent we have
   outstanding commercial paper, our ability to borrow under the facilities is reduced. At March&amp;#160;31,
   2011, we had no outstanding commercial paper.
   &lt;/div&gt;
   &lt;/div&gt;
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 -Publisher SEC
 -Name Regulation S-X (SX)
 -Number 210
 -Section 02
 -Paragraph 19, 20, 22
 -Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 129
 -Paragraph 2, 4

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