0000810893 2012-10-01 2012-10-01 0000810893 pimco:S000025820Member pimco:AAAAMember 2012-10-01 2012-10-01 xbrli:pure iso4217:USD xbrli:shares iso4217:USD xbrli:shares Other 2012-03-31 PIMCO FUNDS 0000810893 false 2012-10-01 2012-09-28 2012-10-01 <div style="display: none">~ http://xbrl.sec.gov/rr/role/RiskReturnDetailData column period compact * row dei_DocumentInformationDocumentAxis compact * row dei_LegalEntityAxis compact * row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * row primary compact * ~</div> <div style="display:none">~ http://pimco/role/OperatingExpensesDataAAAA column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact pimco_S000025820Member ~</div> <div style="display:none">~ http://pimco/role/ExpenseExampleAAAA column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact pimco_S000025820Member ~</div> <div style="font-size:10;padding-top:5;padding-bottom:0;padding-left:0; text-align: center"><font size="2"><b> Disclosure Related to the PIMCO Emerging Markets Corporate Bond Fund (the "Fund")</b></font> </div><p></p> <p></p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <i> Effective immediately, the advisory fee for the Fund is decreased by 0.10% to 0.75% causing the Fund's Total Annual Fund Operating Expenses to decrease as described below. This advisory fee reduction results in the Fund's Management Fees decreasing to 1.15% for Institutional and Administrative Class shares, 1.25% for Class P shares and 1.30% for Class A, Class C and Class D shares and the Fund's Total Annual Fund Operating Expenses decreasing to 1.15% for Institutional Class shares, 1.25% for Class P shares, 1.40% for Administrative Class shares, 1.55% for Class A and Class D shares and 2.30% for Class C shares.</i></p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><i> Effective immediately, corresponding changes are made to the Fund's Annual Fund Operating Expenses table and related footnotes, as well as the Expense Example following the table. Also, effective immediately, footnotes describing the fee reduction are added to: (i) the Management Fees table in the "Management of the Funds – Management Fees" section of the prospectus; and (ii) the advisory fees table in the "Management of the Funds – Management Fees" section of the prospectus. </i></p> <p></p> <div style="font-size:10;padding-top:5;padding-bottom:0;padding-left:0; text-align: center"><font size="2"><b> PIMCO Funds</b></font> </div><p></p><p></p> <div style="font-size:10;padding-top:5;padding-bottom:0;padding-left:0; text-align: center"><font size="2"><b> Supplement Dated October 1, 2012 to the</b></font> </div> <div style="font-size:10;padding-top:5;padding-bottom:0;padding-left:0; text-align: center"><font size="2"><b> Bond Funds Class A, Class B, Class C and Class R Prospectus and Bond Funds Institutional Class,</b></font> </div> <div style="font-size:10;padding-top:5;padding-bottom:0;padding-left:0; text-align: center"><font size="2"><b> Class M, Class P, Administrative Class and Class D Prospectus, each dated July 31, 2012, as</b></font> </div> <div style="font-size:10;padding-top:5;padding-bottom:0;padding-left:0; text-align: center"><font size="2"><b> supplemented from time to time (each a "Prospectus")</b></font> </div><p></p>