1.0.0.3 false Fair Value Measurements false 1 $ false false Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 Unit1 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 2 Fair Value Measurements [Abstract] 0 esv_FairValueMeasurements esv false na duration string Fair Value Measurements [Abstract] false false false false false true false false false 1 false false 0 0 false false Fair Value Measurements [Abstract] false 3 Fair Value Measurements 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 <div> <table class="MsoNormalTable" border="0" cellpadding="0" width= "625" style= "width:468.75pt; mso-cellspacing:1.5pt;mso-yfti-tbllook:1184"> <tr style= "mso-yfti-irow:0;mso-yfti-firstrow:yes;mso-yfti-lastrow:yes"> <td style="padding:.75pt .75pt .75pt .75pt"> <h2> <a name= "_AUCe6a949b067d140d7a8c1f72887501a9f"> Note 7 - Fair Value Measurements</a> </h2>        The following fair value hierarchy table categorizes information regarding our assets and liabilities measured at fair value on a recurring basis as of June 30, 2009 and December 31, 2008 (in millions):   </td> </tr> </table>   <table class="MsoNormalTable" border="0" cellpadding="0" width= "625" style= "width:468.75pt; mso-cellspacing:1.5pt;mso-yfti-tbllook:1184"> <tr style= "mso-yfti-irow:0;mso-yfti-firstrow:yes;mso-yfti-lastrow:yes"> <td style="padding:.75pt .75pt .75pt .75pt"> Assets Measured at Fair Value on a Recurring Basis   </td> </tr> </table>   <table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="625" style= "width:468.75pt;mso-cellspacing:0in;mso-yfti-tbllook:1184;mso-padding-alt: 0in 0in 0in 0in"> <tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes"> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in"> Quoted Prices in </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in"> Significant </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:1"> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in"> Active Markets </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in"> Other </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in"> Significant </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:2"> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in"> for </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in"> Observable </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in"> Unobservable </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:3"> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in"> Identical Assets </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in"> Inputs </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in"> Inputs </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:4"> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">     (Level 1)     </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">     (Level 2)     </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">     (Level 3)     </td> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">      Total      </td> </tr> <tr style="mso-yfti-irow:5"> <td colspan="3" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="12" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:6"> <td width="30%" valign="bottom" style= "width:30.0%;padding:0in 0in 0in 0in"> As of June 30, 2009 </td> <td width="1%" valign="bottom" style= "width:1.0%;padding:0in 0in 0in 0in">   </td> <td width="3%" valign="bottom" style= "width:3.0%;padding:0in 0in 0in 0in">   </td> <td width="5%" valign="bottom" style= "width:5.0%;padding:0in 0in 0in 0in">   </td> <td width="10%" valign="bottom" style= "width:10.0%;padding:0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;padding:0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;padding:0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;padding:0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;padding:0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;padding:0in 0in 0in 0in">   </td> <td width="7" valign="bottom" style= "width:5.25pt;padding:0in 0in 0in 0in">   </td> <td width="6%" valign="bottom" style= "width:6.0%;padding:0in 0in 0in 0in">   </td> <td width="6%" valign="bottom" style= "width:6.0%;padding:0in 0in 0in 0in">   </td> <td width="10%" valign="bottom" style= "width:10.0%;padding:0in 0in 0in 0in">   </td> <td width="8%" valign="bottom" style= "width:8.0%;padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:7"> <td style="padding:0in 0in 0in 0in">   </td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> </tr> <tr style="mso-yfti-irow:8"> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">      Auction rate securities </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $  --   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $    --   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $61.6        </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $61.6   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:9"> <td valign="bottom" style="padding:0in 0in 0in 0in">      Derivative instruments, net </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> --   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> 1.6   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> --        </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> 1.6   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:10"> <td colspan="15" style="padding:0in 0in 0in 0in"> <div class="MsoNormal" align="center" style= "text-align:center"> <hr size="1" width="100%" noshade="noshade" style= "color:#ACA899" align="center" /> </div> </td> </tr> <tr style="mso-yfti-irow:11"> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">           Total financial assets </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $  --   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $  1.6   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $61.6        </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $63.2   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:12"> <td colspan="15" style="padding:0in 0in 0in 0in"> <div class="MsoNormal" align="center" style= "text-align:center"> <hr size="3" width="100%" noshade="noshade" style= "color:#ACA899" align="center" /> </div> </td> </tr> <tr style="mso-yfti-irow:13"> <td style="padding:0in 0in 0in 0in">   </td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> </tr> <tr style="mso-yfti-irow:14"> <td width="28%" valign="bottom" style= "width:28.0%;padding:0in 0in 0in 0in"> As of December 31, 2008 </td> <td width="1%" valign="bottom" style= "width:1.0%;padding:0in 0in 0in 0in">   </td> <td width="3%" valign="bottom" style= "width:3.0%;padding:0in 0in 0in 0in">   </td> <td width="5%" valign="bottom" style= "width:5.0%;padding:0in 0in 0in 0in">   </td> <td width="10%" valign="bottom" style= "width:10.0%;padding:0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;padding:0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;padding:0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;padding:0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;padding:0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;padding:0in 0in 0in 0in">   </td> <td width="7" valign="bottom" style= "width:5.25pt;padding:0in 0in 0in 0in">   </td> <td width="6%" valign="bottom" style= "width:6.0%;padding:0in 0in 0in 0in">   </td> <td width="6%" valign="bottom" style= "width:6.0%;padding:0in 0in 0in 0in">   </td> <td width="10%" valign="bottom" style= "width:10.0%;padding:0in 0in 0in 0in">   </td> <td width="10%" valign="bottom" style= "width:10.0%;padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:15"> <td style="padding:0in 0in 0in 0in">   </td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> </tr> <tr style="mso-yfti-irow:16"> <td valign="bottom" style="padding:0in 0in 0in 0in">      Auction rate securities </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $  --   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $    --   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $64.2        </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $64.2   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:17"> <td colspan="15" style="padding:0in 0in 0in 0in"> <div class="MsoNormal" align="center" style= "text-align:center"> <hr size="1" width="100%" noshade="noshade" style= "color:#ACA899" align="center" /> </div> </td> </tr> <tr style="mso-yfti-irow:18"> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">           Total financial assets </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $  --   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $    --   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $64.2        </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $64.2   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:19"> <td colspan="15" style="padding:0in 0in 0in 0in"> <div class="MsoNormal" align="center" style= "text-align:center"> <hr size="3" width="100%" noshade="noshade" style= "color:#ACA899" align="center" /> </div> </td> </tr> <tr style="mso-yfti-irow:20"> <td style="padding:0in 0in 0in 0in">   </td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> </tr> <tr style="mso-yfti-irow:21"> <td valign="bottom" style="padding:0in 0in 0in 0in">      Derivative instruments, net </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $  --   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $20.3   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $   --         </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $20.3   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:22"> <td colspan="15" style="padding:0in 0in 0in 0in"> <div class="MsoNormal" align="center" style= "text-align:center"> <hr size="1" width="100%" noshade="noshade" style= "color:#ACA899" align="center" /> </div> </td> </tr> <tr style="mso-yfti-irow:23"> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">           Total financial liabilities </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $  --   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $20.3   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $   --         </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $20.3   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:24;mso-yfti-lastrow:yes"> <td colspan="15" style="padding:0in 0in 0in 0in"> <div class="MsoNormal" align="center" style= "text-align:center"> <hr size="3" width="100%" noshade="noshade" style= "color:#ACA899" align="center" /> </div> </td> </tr> </table>   <table class="MsoNormalTable" border="0" cellpadding="0" width= "625" style= "width:468.75pt; mso-cellspacing:1.5pt;mso-yfti-tbllook:1184"> <tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes"> <td colspan="2" style="padding:.75pt .75pt .75pt .75pt">     Derivative Instruments        Our derivative instruments were measured at fair value on a recurring basis using Level 2 inputs as of June 30, 2009 and December 31, 2008. See "Note 4 - Derivative Financial Instruments" for additional information on our derivatives, including a description of our foreign currency hedging activities and related methodologies used to manage foreign currency risk. The fair value measurement of our derivatives was based on market prices that are generally observable for similar assets or liabilities at commonly quoted intervals. </td> </tr> <tr style="mso-yfti-irow:1;mso-yfti-lastrow:yes"> <td style="padding:.75pt .75pt .75pt .75pt">     Auction Rate Securities        As of June 30, 2009 and December 31, 2008, we held long-term debt instruments with variable interest rates that periodically reset through an auction process ("auction rate securities") totaling $69.7 million and $72.3 million (par value), respectively. Auction rate securities were classified as long-term investments on our condensed consolidated balance sheets. Our auction rate securities were originally acquired in January 2008 and have maturity dates ranging from 2025 to 2047. Our auction rate securities were measured at fair value on a recurring basis using significant Level 3 inputs as of June 30, 2009 and December 31, 2008. The following table summarizes our fair value measurements using significant Level 3 inputs, and changes therein, for the three-month and six-month periods ended June 30, 2009 and 2008 (in millions):   </td> </tr> </table>   <table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="625" style= "width:468.75pt;mso-cellspacing:0in;mso-yfti-tbllook:1184;mso-padding-alt: 0in 0in 0in 0in"> <tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes"> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="4" valign="bottom" style= "padding:0in 0in 0in 0in">    Three Months Ended </td> <td colspan="4" valign="bottom" style= "padding:0in 0in 0in 0in">     Six Months Ended </td> </tr> <tr style="mso-yfti-irow:1"> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="4" valign="bottom" style= "padding:0in 0in 0in 0in">               June 30,           </td> <td colspan="4" valign="bottom" style= "padding:0in 0in 0in 0in">                June 30,           </td> </tr> <tr style="mso-yfti-irow:2"> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   2009   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   2008   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">      2009   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">      2008   </td> </tr> <tr style="mso-yfti-irow:3"> <td style="padding:0in 0in 0in 0in">   </td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> <td style="padding:0in 0in 0in 0in"></td> </tr> <tr style="mso-yfti-irow:4"> <td width="49%" valign="bottom" style= "width:49.0%;background:#CCEEFF; padding:0in 0in 0in 0in"> Beginning Balance </td> <td width="2%" valign="bottom" style= "width:2.0%;background:#CCEEFF;padding: 0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;background:#CCEEFF;padding: 0in 0in 0in 0in"> $61.9 </td> <td width="3%" valign="bottom" style= "width:3.0%;background:#CCEEFF;padding: 0in 0in 0in 0in">   </td> <td width="10%" valign="bottom" style= "width:10.0%;background:#CCEEFF; padding:0in 0in 0in 0in"> $79.9   </td> <td width="4%" valign="bottom" style= "width:4.0%;background:#CCEEFF;padding: 0in 0in 0in 0in">   </td> <td width="10%" valign="bottom" style= "width:10.0%;background:#CCEEFF; padding:0in 0in 0in 0in"> $64.2  </td> <td width="3%" valign="bottom" style= "width:3.0%;background:#CCEEFF;padding: 0in 0in 0in 0in">   </td> <td width="9%" valign="bottom" style= "width:9.0%;background:#CCEEFF;padding: 0in 0in 0in 0in"> $    --   </td> <td width="2%" valign="bottom" style= "width:2.0%;background:#CCEEFF;padding: 0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:5"> <td valign="bottom" style="padding:0in 0in 0in 0in">     (Settlements) purchases </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> (.3 </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> ) </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> (9.7)  </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> (2.6) </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> 73.3  </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:6"> <td width="49%" valign="bottom" style= "width:49.0%;background:#CCEEFF; padding:0in 0in 0in 0in">     Unrealized losses* </td> <td width="2%" valign="bottom" style= "width:2.0%;background:#CCEEFF;padding: 0in 0in 0in 0in">   </td> <td width="7%" valign="bottom" style= "width:7.0%;background:#CCEEFF;padding: 0in 0in 0in 0in"> -- </td> <td width="3%" valign="bottom" style= "width:3.0%;background:#CCEEFF;padding: 0in 0in 0in 0in">   </td> <td width="10%" valign="bottom" style= "width:10.0%;background:#CCEEFF; padding:0in 0in 0in 0in"> (.2)  </td> <td width="4%" valign="bottom" style= "width:4.0%;background:#CCEEFF;padding: 0in 0in 0in 0in">   </td> <td width="10%" valign="bottom" style= "width:10.0%;background:#CCEEFF; padding:0in 0in 0in 0in"> --  </td> <td width="3%" valign="bottom" style= "width:3.0%;background:#CCEEFF;padding: 0in 0in 0in 0in">   </td> <td width="9%" valign="bottom" style= "width:9.0%;background:#CCEEFF;padding: 0in 0in 0in 0in"> (3.3) </td> <td width="2%" valign="bottom" style= "width:2.0%;background:#CCEEFF;padding: 0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:7"> <td valign="bottom" style="padding:0in 0in 0in 0in">     Realized losses </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> -- </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> --   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> --  </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> --  </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:8"> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">     Transfers in and/or out of Level 3 </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> -- </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> --   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> --  </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> --  </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:9"> <td colspan="10" style="padding:0in 0in 0in 0in"> <div class="MsoNormal" align="center" style= "text-align:center"> <hr size="1" width="100%" noshade="noshade" style= "color:#ACA899" align="center" /> </div> </td> </tr> <tr style="mso-yfti-irow:10"> <td valign="bottom" style="padding:0in 0in 0in 0in"> Ending balance </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $61.6 </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $70.0   </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $61.6  </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> $70.0  </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:11;mso-yfti-lastrow:yes"> <td colspan="10" style="padding:0in 0in 0in 0in"> <div class="MsoNormal" align="center" style= "text-align:center"> <hr size="3" width="100%" noshade="noshade" style= "color:#ACA899" align="center" /> </div> </td> </tr> </table>   <table class="MsoNormalTable" border="0" cellpadding="0" width= "600" style= "width:6.25in; mso-cellspacing:1.5pt;mso-yfti-tbllook:1184"> <tr style= "mso-yfti-irow:0;mso-yfti-firstrow:yes;mso-yfti-lastrow:yes"> <td width="7%" valign="top" style= "width:7.0%;padding:.75pt .75pt .75pt .75pt"> * </td> <td width="93%" valign="top" style= "width:93.0%;padding:.75pt .75pt .75pt .75pt"> Unrealized losses were included in other income, net, in our condensed consolidated statements of income. </td> </tr> </table>   <table class="MsoNormalTable" border="0" cellpadding="0" width= "600" style= "width:6.25in; mso-cellspacing:1.5pt;mso-yfti-tbllook:1184"> <tr style= "mso-yfti-irow:0;mso-yfti-firstrow:yes;mso-yfti-lastrow:yes"> <td style="padding:.75pt .75pt .75pt .75pt">        Before utilizing Level 3 inputs in our fair value measurement, we considered whether observable inputs were available. As a result of continued auction failures, quoted prices for our auction rate securities did not exist as of June 30, 2009. Accordingly, we concluded that Level 1 inputs were not available. Brokerage statements received from the five broker/dealers that held our auction rate securities included their estimated market value as of June 30, 2009. Four broker/dealers valued our auction rate securities at par and the fifth valued our auction rate securities at 93% of par. Due to the lack of transparency into the methodologies used to determine the estimated market values, we have concluded that estimated market values provided on our brokerage statements do not constitute valid inputs, and we do not utilize them in measuring the fair value of our auction rate securities. </td> </tr> </table>   <table class="MsoNormalTable" border="0" cellpadding="0" width= "600" style= "width:6.25in; mso-cellspacing:1.5pt;mso-yfti-tbllook:1184"> <tr style= "mso-yfti-irow:0;mso-yfti-firstrow:yes;mso-yfti-lastrow:yes"> <td style="padding:.75pt .75pt .75pt .75pt">        We determined that use of a valuation model was the best available technique for measuring the fair value of our auction rate securities. We used an income approach valuation model to estimate the price that would be received in exchange for our auction rate securities in an orderly transaction between market participants ("exit price") as of June 30, 2009. The exit price was derived as the weighted-average present value of expected cash flows over various periods of illiquidity, using a risk-adjusted discount rate that was based on the credit risk and liquidity risk of our auction rate securities.        While our valuation model was based on both Level 2 (credit quality and interest rates) and Level 3 inputs, we determined that Level 3 inputs were most significant to the overall fair value measurement, particularly the estimates of risk-adjusted discount rates and ranges of expected periods of illiquidity. We believe that we have the ability to maintain our investment in these securities until they are redeemed, repurchased or sold in a market that facilitates orderly transactions.     Other Financial Instruments        During the second quarter of 2009, we adopted FASB Staff Position No. FAS 107-1 and APB 28-1, "Interim Disclosures about Fair Value of Financial Instruments". This staff position amends SFAS No. 107, "Disclosures about Fair Value of Financial Instruments", to require disclosures about the fair value of financial instruments of publicly-traded companies for interim reporting periods as well as in annual financial statements. This staff position also amends APB Opinion No. 28, "Interim Financial Reporting", to require the aforementioned disclosures in summarized financial information at interim reporting periods.        The carrying values and estimated fair values of our debt instruments as of June 30, 2009 and December 31, 2008 were as follows (in millions):   </td> </tr> </table>   <table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="600" style= "width:6.25in;mso-cellspacing:0in;mso-yfti-tbllook:1184;mso-padding-alt: 0in 0in 0in 0in"> <tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes"> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="4" valign="bottom" style= "padding:0in 0in 0in 0in"> June 30, </td> <td colspan="4" valign="bottom" style= "padding:0in 0in 0in 0in"> December 31, </td> </tr> <tr style="mso-yfti-irow:1"> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="4" valign="bottom" style= "padding:0in 0in 0in 0in">                  2009                 </td> <td colspan="4" valign="bottom" style= "padding:0in 0in 0in 0in">                 2008                 </td> </tr> <tr style="mso-yfti-irow:2"> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in"> Estimated </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in"> Estimated </td> </tr> <tr style="mso-yfti-irow:3"> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in"> Carrying </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   Fair </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in"> Carrying </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   Fair </td> </tr> <tr style="mso-yfti-irow:4"> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   Value   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">    Value   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   Value   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">    Value   </td> </tr> <tr style="mso-yfti-irow:5"> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in"></td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> <td colspan="2" valign="bottom" style= "padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:6"> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> 4.65% Bonds, including current maturities </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $  51.8      </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $  56.7      </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $  54.0      </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> $  62.1      </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:7"> <td valign="bottom" style="padding:0in 0in 0in 0in"> 6.36% Bonds, including current maturities </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> 82.3      </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> 94.0      </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> 88.7      </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> <td valign="bottom" style="padding:0in 0in 0in 0in"> 103.9      </td> <td valign="bottom" style="padding:0in 0in 0in 0in">   </td> </tr> <tr style="mso-yfti-irow:8;mso-yfti-lastrow:yes"> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> 7.20% Debentures </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> 148.8      </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> 144.9      </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> 148.8      </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in"> 140.3      </td> <td valign="bottom" style= "background:#CCEEFF;padding:0in 0in 0in 0in">   </td> </tr> </table>   <table class="MsoNormalTable" border="0" cellpadding="0" width= "600" style= "width:6.25in; mso-cellspacing:1.5pt;mso-yfti-tbllook:1184"> <tr style= "mso-yfti-irow:0;mso-yfti-firstrow:yes;mso-yfti-lastrow:yes"> <td style="padding:.75pt .75pt .75pt .75pt">        The estimated fair value of our 7.20% Debentures was determined using quoted market prices. The estimated fair values of our 4.65% Bonds and 6.36% Bonds were determined using an income approach valuation model. The estimated fair value of our cash and cash equivalents, receivables, trade payables and other liabilities approximated their carrying values as of June 30, 2009 and December 31, 2008. </td> </tr> </table> <style> /*<![CDATA[*/ v:* {behavior:url(#default#VML);} o:* {behavior:url(#default#VML);} w:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);}  /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} /*]]>*/ </style> </div> Note 7 - Fair Value Measurements        The following fair value hierarchy false false No definition available. No authoritative reference available. false false 1 2 false UnKnown UnKnown UnKnown false true