XML 10 R3.htm IDEA: XBRL DOCUMENT v3.3.1.900
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName COLUMBIA FUNDS SERIES TRUST I
Prospectus Date rr_ProspectusDate Aug. 01, 2015
Supplement [Text Block] cfsti_SupplementTextBlock
Supplement dated February 12, 2016

to the Prospectus of the following fund:
Fund Prospectus Dated
Columbia Funds Series Trust I  
  Columbia Pacific/Asia Fund 8/1/2015
Effective immediately, the first paragraph under the caption "Principal Investment Strategies" in the "Summary of the Fund" and in the "More Information About the Fund" sections is hereby superseded and replaced with the following:
Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in equity securities (including, but not limited to, common stocks, preferred stocks and securities convertible into common or preferred stocks) of companies located in Asia and the Pacific Basin, which includes Australia, New Zealand and India, and other countries within this region (the Pacific/Asia region). The Fund may also gain exposure to such companies through investments in depositary receipts. The Fund may invest in a variety of countries (including emerging markets), industries and sectors and does not attempt to invest a specific percentage of its assets in any given country, industry or sector. However, the Fund has invested substantially in the financial services sector and may continue to invest substantially in this or other sectors in the future.
The rest of the section remains the same.
Effective immediately, the information under the caption "Principal Risks” in the "Summary of the Fund" and in the "More Information About the Fund" sections is hereby revised to add the following:  
Depositary Receipts Risk. Depositary receipts are receipts issued by a bank or trust company reflecting ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts (ADRs). Depositary receipts involve risks similar to the risks associated with investments in foreign securities, including those associated with investing in the particular country of an issuer, which may be related to the particular political, regulatory, economic, social and other conditions or events occurring in the country and fluctuations in its currency, as well as market risk tied to the underlying foreign company. In addition, ADR holders may have limited voting rights, may not have the same rights afforded typical company stockholders in the event of a corporate action such as an acquisition, merger or rights offering and may experience difficulty in receiving company stockholder communications. The Fund may invest significantly in depositary receipts.
The rest of the section remains the same.
Columbia Pacific/Asia Fund  
Risk/Return: rr_RiskReturnAbstract  
Supplement [Text Block] cfsti_SupplementTextBlock
Supplement dated February 12, 2016

to the Prospectus of the following fund:
Fund Prospectus Dated
Columbia Funds Series Trust I  
  Columbia Pacific/Asia Fund 8/1/2015
Effective immediately, the first paragraph under the caption "Principal Investment Strategies" in the "Summary of the Fund" and in the "More Information About the Fund" sections is hereby superseded and replaced with the following:
Under normal circumstances, the Fund invests at least 80% of its net assets (including the amount of any borrowings for investment purposes) in equity securities (including, but not limited to, common stocks, preferred stocks and securities convertible into common or preferred stocks) of companies located in Asia and the Pacific Basin, which includes Australia, New Zealand and India, and other countries within this region (the Pacific/Asia region). The Fund may also gain exposure to such companies through investments in depositary receipts. The Fund may invest in a variety of countries (including emerging markets), industries and sectors and does not attempt to invest a specific percentage of its assets in any given country, industry or sector. However, the Fund has invested substantially in the financial services sector and may continue to invest substantially in this or other sectors in the future.
The rest of the section remains the same.
Effective immediately, the information under the caption "Principal Risks” in the "Summary of the Fund" and in the "More Information About the Fund" sections is hereby revised to add the following:  
Depositary Receipts Risk. Depositary receipts are receipts issued by a bank or trust company reflecting ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts (ADRs). Depositary receipts involve risks similar to the risks associated with investments in foreign securities, including those associated with investing in the particular country of an issuer, which may be related to the particular political, regulatory, economic, social and other conditions or events occurring in the country and fluctuations in its currency, as well as market risk tied to the underlying foreign company. In addition, ADR holders may have limited voting rights, may not have the same rights afforded typical company stockholders in the event of a corporate action such as an acquisition, merger or rights offering and may experience difficulty in receiving company stockholder communications. The Fund may invest significantly in depositary receipts.
The rest of the section remains the same.