2.2.0.25falsefalse12301 - Disclosure - SUPPLEMENTARY REINSURANCE INFORMATIONtruefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) / shares USD ($) $Duration_1_1_2010_To_12_31_2010http://www.sec.gov/CIK0001163348duration2010-01-01T00:00:002010-12-31T00:00:00Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0us-gaap_SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseSUPPLEMENTARY REINSURANCE INFORMATION3false0us-gaap_SupplementalScheduleOfReinsurancePremiumsForInsuranceCompaniesTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div style="width: 87%; margin-left: 6%;"><a name="Y89629309"> </a> <div style="font-family: Arial, Helvetica; background: none transparent scroll repeat 0% 0%; color: #000000; margin-left: 0%; font-size: 10pt; margin-right: 0%;" align="right"><b><font style="font-family: 'Times New Roman', Times;" class="_mt">Schedule IV</font></b> </div> <div style="margin-top: 18pt; font-size: 1pt;"> </div> <div style="font-family: Arial, Helvetica; background: none transparent scroll repeat 0% 0%; color: #000000; margin-left: 0%; font-size: 10pt; margin-right: 0%;" align="center"><strong>ALLIED WORLD ASSURANCE COMPANY HOLDINGS, AG<br /></strong></div></div> <div style="margin-top: 6pt; font-size: 1pt;"> </div> <div style="font-family: Arial, Helvetica; background: none transparent scroll repeat 0% 0%; color: #000000; margin-left: 0%; font-size: 10pt; margin-right: 0%;" align="center"><b><font style="font-family: 'Times New Roman', Times;" class="_mt">SUPPLEMENTARY REINSURANCE INFORMATION<br /></font></b></div> <div style="font-family: Arial, Helvetica; background: none transparent scroll repeat 0% 0%; color: #000000; margin-left: 0%; font-size: 10pt; margin-right: 0%;" align="center"><font style="font-family: 'Times New Roman', Times;" class="_mt">(Expressed in thousands of United States dollars) </font></div> <div style="margin-top: 6pt; font-size: 1pt;"> </div> <table style="font-family: 'Times New Roman', Times; background: none transparent scroll repeat 0% 0%; color: #000000; font-size: 10pt;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr style="font-size: 1pt;" valign="bottom"><td width="36%"> </td> <td width="2%"> </td> <td width="1%" align="right"> </td> <td width="7%" align="right"> </td> <td width="1%" align="left"> </td> <td width="3%"> </td> <td width="1%" align="right"> </td> <td width="6%" align="right"> </td> <td width="1%" align="left"> </td> <td width="3%"> </td> <td width="1%" align="right"> </td> <td width="9%" align="right"> </td> <td width="1%" align="left"> </td> <td width="3%"> </td> <td width="1%" align="right"> </td> <td width="7%" align="right"> </td> <td width="1%" align="left"> </td> <td width="3%"> </td> <td width="1%" align="right"> </td> <td width="11%" align="right"> </td> <td width="1%" align="left"> </td></tr> <tr style="font-size: 8pt;" valign="bottom" align="center"><td valign="bottom" nowrap="nowrap" align="center">  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center">  </td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>(b)<br /></b></td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>(c)<br /></b></td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>(d)<br /></b></td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>Percentage of<br /></b></td> <td>  </td></tr> <tr style="font-size: 8pt;" valign="bottom" align="center"><td valign="bottom" nowrap="nowrap" align="center">  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center">  </td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>Ceded to<br /></b></td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>Assumed from<br /></b></td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>Net<br /></b></td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>Amount Assumed<br /></b></td> <td>  </td></tr> <tr style="font-size: 8pt;" valign="bottom" align="center"><td valign="bottom" nowrap="nowrap" align="center">  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>(a)<br /></b></td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>Other<br /></b></td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>Other<br /></b></td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>Amount<br /></b></td> <td>  </td> <td>  </td> <td valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>to Net<br /></b></td> <td>  </td></tr> <tr style="font-size: 8pt;" valign="bottom" align="center"><td valign="bottom" nowrap="nowrap" align="center">  </td> <td>  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>Gross</b> </td> <td>  </td> <td>  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>Companies</b> </td> <td>  </td> <td>  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>Companies</b> </td> <td>  </td> <td>  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>(a) - (b) + (c)</b> </td> <td>  </td> <td>  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" nowrap="nowrap" align="center"><b>(c)/(d)</b> </td> <td>  </td></tr> <tr style="line-height: 3pt; font-size: 1pt;"><td>  </td></tr> <tr style="background: #cceeff;" valign="bottom"><td valign="bottom" align="left"> <div style="text-indent: -10pt; margin-left: 10pt;">Year ended December 31, 2010 </div></td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">1,234,204 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">365,942 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">524,193 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">1,392,455 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td valign="bottom" nowrap="nowrap" align="right">38 </td> <td valign="bottom" nowrap="nowrap" align="left">% </td></tr> <tr valign="bottom"><td valign="bottom" align="left"> <div style="text-indent: -10pt; margin-left: 10pt;">Year ended December 31, 2009(1) </div></td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">1,230,770 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">375,220 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">465,575 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">1,321,125 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td valign="bottom" nowrap="nowrap" align="right">35 </td> <td valign="bottom" nowrap="nowrap" align="left">% </td></tr> <tr style="background: #cceeff;" valign="bottom"><td valign="bottom" align="left"> <div style="text-indent: -10pt; margin-left: 10pt;">Year ended December 31, 2008(1) </div></td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">1,015,444 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">338,356 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">430,140 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">$ </td> <td valign="bottom" nowrap="nowrap" align="right">1,107,228 </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td>  </td> <td valign="bottom" nowrap="nowrap" align="left">  </td> <td valign="bottom" nowrap="nowrap" align="right">39 </td> <td valign="bottom" nowrap="nowrap" align="left">% </td></tr></table> <div style="text-indent: 0%; font-family: 'Times New Roman', Times; background: none transparent scroll repeat 0% 0%; color: #000000; margin-left: 0%; font-size: 10pt; margin-right: 0%;" align="left"> </div> <div style="margin-top: 6pt; font-size: 1pt;"> </div> <div style="border-bottom: #000000 1pt solid; width: 13%; margin-left: 0%; font-size: 1pt; align: left;"> </div> <div style="margin-top: 3pt; font-size: 1pt;"> </div> <table style="font-family: 'Times New Roman', Times; background: none transparent scroll repeat 0% 0%; color: #000000; font-size: 10pt;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td width="2%"> </td> <td width="1%"> </td> <td width="97%"> </td></tr> <tr><td valign="top" align="right">(1) </td> <td> </td> <td valign="bottom">Represents balances of Allied World Assurance Company Holdings, Ltd prior to the Redomestication in 2010.</td></tr></table> </div>Schedule IV   ALLIED WORLD ASSURANCE COMPANY HOLDINGS, AG   SUPPLEMENTARY REINSURANCE INFORMATION (Expressed in thousands of United StatesfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSupplemental schedule of reinsurance information required to be filed for each period for which an audited income statement is presented. Reinsurance schedule includes the type of insurance, gross amount of premiums, premiums ceded to other companies, premiums assumed from other companies, net amount of premium revenue, and the percentage of the premiums assumed to net premium revenue.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 17 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 05 -Article 7 falsefalseSUPPLEMENTARY REINSURANCE INFORMATION12SUPPLEMENTARY REINSURANCE INFORMATIONUnKnownUnKnownUnKnownUnKnownfalsetrue