0000773757 2013-01-30 2013-01-30 0000773757 columbia:S000021576Member 2013-01-30 2013-01-30 xbrli:pure iso4217:USD xbrli:shares iso4217:USD xbrli:shares Other 2012-03-31 COLUMBIA FUNDS SERIES TRUST I 0000773757 false 2013-01-30 2013-01-30 2013-01-30 <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> <p></p> <div style="font-size:14;padding-top:5;padding-bottom:0;padding-left:0; text-align: center"><font size="3"><b> COLUMBIA FUNDS SERIES TRUST I</b></font> </div><p></p> <div style="font-size:14;padding-top:5;padding-bottom:0;padding-left:0; text-align: center"> <font size="2"><b>Columbia Pacific/Asia Fund<br/> (the "Fund") </b></font></div><p></p> <div style="font-size:14;padding-top:5;padding-bottom:0;padding-left:0; text-align: center"><font size="2"><i>Supplement dated January 30, 2013 to the<br/> Fund's prospectuses dated August 1, 2012, as supplemented<br/> </i></font></div><p></p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b><i> Effective immediately, the second paragraph of the section of the prospectuses for the Fund entitled "Principal Investment Strategies" is deleted in its entirety and replaced with the following disclosure:</i></b></p> <p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> The Fund may invest in currency forwards and futures for both hedging and non-hedging purposes, including, for example, to seek to enhance returns or, in certain unusual circumstances, when holding a derivative is deemed preferable to holding the underlying asset.</p>