0000908186 2012-10-31 2012-10-31 0000908186 accp:S000005778Member 2012-10-31 2012-10-31 0000908186 accp:S000005778Member accp:C000015872Member 2012-10-31 2012-10-31 xbrli:pure Prior to December 3, 2007, this class was referred to as the Advisor Class and did not have a front-end sales charge. Performance has been restated to reflect this charge. AMERICAN CENTURY CAPITAL PORTFOLIOS INC Other false 0000908186 2012-10-31 2012-10-31 2012-08-01 2012-08-01 LARGE COMPANY VALUE FUND -0.0483 -0.0477 0.0209 2000-10-26 ~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact accp_S000005778Member column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * row primary compact * ~ <table cellpadding="0" cellspacing="0" width="100%" style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-SIZE: 10pt; FONT-FAMILY: times new roman"> <tr> <td align="left" valign="top" width="54%"> <div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"> <font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">American Century Capital Portfolios, Inc.</font> </div> <div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"> &#160; </div> <div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"> <font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 18pt; FONT-WEIGHT: bold">Prospectus Supplement</font> </div> <div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"> &#160; </div> <div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"> <font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 12pt; FONT-WEIGHT: bold">Large Company Value Fund</font> </div> </td> <td valign="top" width="32%"> <font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font> </td> </tr> <tr> <td align="left" colspan="2" valign="middle" width="86%"> <div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"> <font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font> </div> <div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"> <font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Supplement dated November 1, 2012&#160;<font style="DISPLAY: inline; FONT-FAMILY: times new roman">&#9642;</font> Prospectus dated August 1, 2012</font> </div> </td> </tr> </table> <br/><div style="LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"> <font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="FONT-STYLE: italic; DISPLAY: inline">The following replaces the footnote to the</font> Average Annual Total Returns <font style="FONT-STYLE: italic; DISPLAY: inline">table on page 4 of the prospectus.</font></font> </div> <br/><table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent-0" width="100%" style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt; FONT-SIZE: 10pt; FONT-FAMILY: times new roman"> <tr valign="top" style="LINE-HEIGHT: 1.25;"> <td style="WIDTH: 18pt"> <div style="TEXT-INDENT: 0pt; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt"> <font style="FONT-STYLE: italic; DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline; FONT-SIZE: 70%; VERTICAL-ALIGN: text-top">1</font></font> </div> </td> <td> <div align="left"> <font style="FONT-STYLE: italic; DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">Prior to December 3, 2007, this class was referred to as the Advisor Class and did not have a front-end sales charge. Performance has been restated to reflect this charge.</font> </div> </td> </tr> </table>