2.4.0.8000019 - Disclosure - Risk/Return Detail Data {Elements} - Target Income Seriestruetruefalse1false falsefalseDuration_02Mar2012_01Mar2013http://www.sec.gov/CIK0000751173duration2012-03-02T00:00:002013-03-01T00:00:001true 2rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:2false 3dei_EntityRegistrantNamedei_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00MANNING & NAPIER FUND, INC /NY/falsefalsefalsexbrli:normalizedStringItemTypenormalizedstringThe exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 false0Registrant Name3false 3rr_ProspectusDaterr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002013-03-01falsefalsetruexbrli:dateItemTypedateThe date of the prospectus.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 1 -Subsection a -Paragraph 3 false0Prospectus Date4false 3mnfi_SupplementTextBlockmnfi_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px" align="center"><b>MANNING&nbsp;&amp; NAPIER FUND, INC. </b></p> <p style="margin-top:12px;margin-bottom:0px" align="center">Supplement dated June&nbsp;17, 2013 to the following Prospectuses: </p> <p style="margin-top:12px;margin-bottom:0px" align="center">The Prospectuses dated March&nbsp;1, 2013 for the following Series and Classes: </p> <p style="margin-top:6px;margin-bottom:0px" align="center"><b>Target Income Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2010 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2015 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2020 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2025 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2030 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2035 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2040 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2045 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2050 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2055 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>(the &#147;Target Series Prospectus&#148;) </b></p> <p style="margin-top:14px;margin-bottom:0px"><b>This supplement provides new and additional information beyond that contained in the Prospectuses and should be read in conjunction with the Prospectuses. </b></p><br/> <table style="border-collapse:collapse" border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td width="4%" valign="top" align="left">2.</td> <td align="left" valign="top">Changes with Respect to the Target Income Series </td></tr></table> <p style="margin-top:12px;margin-bottom:0px">In the &#147;Summary of Past Performance&#148; section of the Target Income Series&#146; summary section of the Target Series Prospectus, the Average Annual Total Return table is hereby deleted and replaced by the following: </p> <p style="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</p> <table cellspacing="0" cellpadding="0" width="100%" border="0" style="border-collapse:collapse" align="center"> <tr> <td width="82%"></td> <td valign="bottom" width="7%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="7%"></td> <td></td> <td></td> <td></td></tr> <tr > <td valign="top" colspan="8"> <p style="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><b>AVERAGE ANNUAL TOTAL RETURNS</b></p> <p style="margin-top:0px;margin-bottom:1px; margin-left:1.00em; text-indent:-1.00em"><b>FOR PERIODS ENDED DECEMBER&nbsp;31, 2012</b></p></td> <td valign="top"> <p style="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><b></b></p> <p style="margin-top:0px;margin-bottom:1px; margin-left:1.00em; text-indent:-1.00em"><b></b></p></td></tr> <tr> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" colspan="2" align="center" style="border-bottom:1px solid #000000"><b>1&nbsp;Year</b></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" colspan="2" align="center" style="border-bottom:1px solid #000000"><b>Since<br/>Inception</b></td> <td valign="bottom"></td></tr> <tr > <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Class K Shares</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td></tr> <tr> <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Return Before Taxes</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">8.69</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">5.46</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr > <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Return After Taxes on Distributions</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">7.29</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">4.31</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr> <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Return After Taxes on Distributions and Sale of Series Shares</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">6.60</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">4.20</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr > <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Class I Shares &#151; Return Before Taxes</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">9.04</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">5.73</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr> <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Class R Shares &#151; Return Before Taxes</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">8.41</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">5.20</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr > <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Class C Shares &#151; Return Before Taxes</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">7.91</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">4.67</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr> <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Indices: (reflect no deduction for fees, expenses, or taxes)</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td></tr> <tr > <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Barclays Capital U.S. Intermediate Aggregate Bond Index</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">3.56</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">5.17</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr> <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Target Income Blended Index</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">6.89</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">5.24</td> <td nowrap="nowrap" valign="bottom">%</td></tr> </table>falsefalsefalsenonnum:textBlockItemTypenaSupplement.No definition available.false0Supplement [Text Block]5false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2false truefalseDuration_02Mar2012_01Mar2013S000020890_Memberhttp://www.sec.gov/CIK0000751173duration2012-03-02T00:00:002013-03-01T00:00:00falsefalseTarget Income Seriesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_S000020890Memberdei_LegalEntityAxisexplicitMembernanafalse0Target Income Series6true 2rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:7false 3mnfi_SupplementTextBlockmnfi_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<p style="margin-top:0px;margin-bottom:0px" align="center"><b>MANNING&nbsp;&amp; NAPIER FUND, INC. </b></p> <p style="margin-top:12px;margin-bottom:0px" align="center">Supplement dated June&nbsp;17, 2013 to the following Prospectuses: </p> <p style="margin-top:12px;margin-bottom:0px" align="center">The Prospectuses dated March&nbsp;1, 2013 for the following Series and Classes: </p> <p style="margin-top:6px;margin-bottom:0px" align="center"><b>Target Income Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2010 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2015 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2020 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2025 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2030 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2035 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2040 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2045 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2050 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>Target 2055 Series &#150; Classes C, I, K and R </b></p> <p style="margin-top:0px;margin-bottom:0px" align="center"><b>(the &#147;Target Series Prospectus&#148;) </b></p> <p style="margin-top:14px;margin-bottom:0px"><b>This supplement provides new and additional information beyond that contained in the Prospectuses and should be read in conjunction with the Prospectuses. </b></p><br/> <table style="border-collapse:collapse" border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td width="4%" valign="top" align="left">2.</td> <td align="left" valign="top">Changes with Respect to the Target Income Series </td></tr></table> <p style="margin-top:12px;margin-bottom:0px">In the &#147;Summary of Past Performance&#148; section of the Target Income Series&#146; summary section of the Target Series Prospectus, the Average Annual Total Return table is hereby deleted and replaced by the following: </p> <p style="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</p> <table cellspacing="0" cellpadding="0" width="100%" border="0" style="border-collapse:collapse" align="center"> <tr> <td width="82%"></td> <td valign="bottom" width="7%"></td> <td></td> <td></td> <td></td> <td valign="bottom" width="7%"></td> <td></td> <td></td> <td></td></tr> <tr > <td valign="top" colspan="8"> <p style="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><b>AVERAGE ANNUAL TOTAL RETURNS</b></p> <p style="margin-top:0px;margin-bottom:1px; margin-left:1.00em; text-indent:-1.00em"><b>FOR PERIODS ENDED DECEMBER&nbsp;31, 2012</b></p></td> <td valign="top"> <p style="margin-top:0px;margin-bottom:0px; margin-left:1.00em; text-indent:-1.00em"><b></b></p> <p style="margin-top:0px;margin-bottom:1px; margin-left:1.00em; text-indent:-1.00em"><b></b></p></td></tr> <tr> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" colspan="2" align="center" style="border-bottom:1px solid #000000"><b>1&nbsp;Year</b></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" colspan="2" align="center" style="border-bottom:1px solid #000000"><b>Since<br/>Inception</b></td> <td valign="bottom"></td></tr> <tr > <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Class K Shares</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td></tr> <tr> <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Return Before Taxes</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">8.69</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">5.46</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr > <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Return After Taxes on Distributions</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">7.29</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">4.31</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr> <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Return After Taxes on Distributions and Sale of Series Shares</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">6.60</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">4.20</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr > <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Class I Shares &#151; Return Before Taxes</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">9.04</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">5.73</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr> <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Class R Shares &#151; Return Before Taxes</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">8.41</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">5.20</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr > <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Class C Shares &#151; Return Before Taxes</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">7.91</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">4.67</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr> <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Indices: (reflect no deduction for fees, expenses, or taxes)</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom"></td></tr> <tr > <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Barclays Capital U.S. Intermediate Aggregate Bond Index</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">3.56</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">5.17</td> <td nowrap="nowrap" valign="bottom">%</td></tr> <tr> <td valign="top"> <div style="margin-left:1.00em; text-indent:-1.00em">Target Income Blended Index</div></td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">6.89</td> <td nowrap="nowrap" valign="bottom">%</td> <td valign="bottom"></td> <td valign="bottom"></td> <td valign="bottom" align="right">5.24</td> <td nowrap="nowrap" valign="bottom">%</td></tr> </table>falsefalsefalsenonnum:textBlockItemTypenaSupplement.No definition available.false0Supplement [Text Block]8false 3rr_PerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<b>AVERAGE ANNUAL TOTAL RETURNS<br/>FOR PERIODS ENDED DECEMBER 31, 2012</b>falsefalsefalsexbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c false0Performance Table Heading9false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse3false truefalseDuration_02Mar2012_01Mar2013S000020890_MemberC000059037_Memberhttp://www.sec.gov/CIK0000751173duration2012-03-02T00:00:002013-03-01T00:00:00falsefalseTarget Income Seriesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_S000020890Memberdei_LegalEntityAxisexplicitMemberfalsefalseCLASS Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_C000059037Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0nanafalse0Target Income Series | CLASS I10true 2rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:11false 3rr_AverageAnnualReturnYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.09040.0904falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false01 Year12false 3rr_AverageAnnualReturnSinceInceptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05730.0573falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Since Inception13false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse4false truefalseDuration_02Mar2012_01Mar2013S000020890_MemberC000059038_Memberhttp://www.sec.gov/CIK0000751173duration2012-03-02T00:00:002013-03-01T00:00:00falsefalseTarget Income Seriesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_S000020890Memberdei_LegalEntityAxisexplicitMemberfalsefalseCLASS Krr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_C000059038Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0nanafalse0Target Income Series | CLASS K14true 2rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:15false 3rr_AverageAnnualReturnYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.08690.0869falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false01 Year16false 3rr_AverageAnnualReturnSinceInceptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05460.0546falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Since Inception17false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse5false truefalseDuration_02Mar2012_01Mar2013S000020890_MemberC000059039_Memberhttp://www.sec.gov/CIK0000751173duration2012-03-02T00:00:002013-03-01T00:00:00falsefalseTarget Income Seriesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_S000020890Memberdei_LegalEntityAxisexplicitMemberfalsefalseCLASS Rrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_C000059039Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0nanafalse0Target Income Series | CLASS R18true 2rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:19false 3rr_AverageAnnualReturnYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.08410.0841falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false01 Year20false 3rr_AverageAnnualReturnSinceInceptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0520.052falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Since Inception21false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse6false truefalseDuration_02Mar2012_01Mar2013S000020890_MemberC000059040_Memberhttp://www.sec.gov/CIK0000751173duration2012-03-02T00:00:002013-03-01T00:00:00falsefalseTarget Income Seriesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_S000020890Memberdei_LegalEntityAxisexplicitMemberfalsefalseCLASS Crr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_C000059040Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0nanafalse0Target Income Series | CLASS C22true 2rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:23false 3rr_AverageAnnualReturnYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.07910.0791falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false01 Year24false 3rr_AverageAnnualReturnSinceInceptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04670.0467falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Since Inception25false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse7false truefalseDuration_02Mar2012_01Mar2013AfterTaxesOnDistributions_MemberS000020890_MemberC000059038_Memberhttp://www.sec.gov/CIK0000751173duration2012-03-02T00:00:002013-03-01T00:00:00falsefalseTarget Income Seriesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_S000020890Memberdei_LegalEntityAxisexplicitMemberfalsefalseReturn After Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseCLASS Krr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_C000059038Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0nanafalse0Target Income Series | Return After Taxes on Distributions | CLASS K26true 2rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:27false 3rr_AverageAnnualReturnYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.07290.0729falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false01 Year28false 3rr_AverageAnnualReturnSinceInceptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04310.0431falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Since Inception29false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse8false truefalseDuration_02Mar2012_01Mar2013AfterTaxesOnDistributionsAndSales_MemberS000020890_MemberC000059038_Memberhttp://www.sec.gov/CIK0000751173duration2012-03-02T00:00:002013-03-01T00:00:00falsefalseTarget Income Seriesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_S000020890Memberdei_LegalEntityAxisexplicitMemberfalsefalseReturn After Taxes on Distributions and Sale of Series Sharesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseCLASS Krr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_C000059038Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0nanafalse0Target Income Series | Return After Taxes on Distributions and Sale of Series Shares | CLASS K30true 2rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:31false 3rr_AverageAnnualReturnYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0660.066falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false01 Year32false 3rr_AverageAnnualReturnSinceInceptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0420.042falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Since Inception33false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse9false truefalseDuration_02Mar2012_01Mar2013S000020890_MemberBarclaysCapitalUsIntermediateAggregateBondIndex_Memberhttp://www.sec.gov/CIK0000751173duration2012-03-02T00:00:002013-03-01T00:00:00falsefalseTarget Income Seriesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_S000020890Memberdei_LegalEntityAxisexplicitMemberfalsefalseBarclays Capital U.S. Intermediate Aggregate Bond Index (reflect no deduction for fees, expenses, or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_BarclaysCapitalUsIntermediateAggregateBondIndexMemberrr_PerformanceMeasureAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0nanafalse0Target Income Series | Barclays Capital U.S. Intermediate Aggregate Bond Index (reflect no deduction for fees, expenses, or taxes)34true 2rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:35false 3rr_AverageAnnualReturnYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03560.0356falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false01 Year36false 3rr_AverageAnnualReturnSinceInceptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05170.0517falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Since Inception37false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse10false truefalseDuration_02Mar2012_01Mar2013S000020890_MemberTargetIncomeBlendedIndex_Memberhttp://www.sec.gov/CIK0000751173duration2012-03-02T00:00:002013-03-01T00:00:00falsefalseTarget Income Seriesdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_S000020890Memberdei_LegalEntityAxisexplicitMemberfalsefalseTarget Income Blended Index (reflect no deduction for fees, expenses, or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldimnfi_TargetIncomeBlendedIndexMemberrr_PerformanceMeasureAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0nanafalse0Target Income Series | Target Income Blended Index (reflect no deduction for fees, expenses, or taxes)38true 2rr_RiskReturnAbstractrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Risk/Return:39false 3rr_AverageAnnualReturnYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.06890.0689falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false01 Year40false 3rr_AverageAnnualReturnSinceInceptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05240.0524falsefalsefalsexbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Since InceptionfalseRisk/Return Detail Data - Target Income SeriesUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.mn.com/role/DisclosureRiskReturnDetailDataElementsTargetIncomeSeries140