Shareholder Report
|
6 Months Ended |
|
Apr. 30, 2026
USD ($)
Holding
|
|---|
| Shareholder Report [Line Items] |
|
|
| Document Type |
N-CSRS
|
|
| Amendment Flag |
false
|
|
| Registrant Name |
Columbia Funds Series Trust I
|
|
| Entity Central Index Key |
0000773757
|
|
| Entity Investment Company Type |
N-1A
|
|
| Document Period End Date |
Apr. 30, 2026
|
|
| Shareholder Report Annual or Semi-Annual |
Semi-Annual Shareholder Report
|
|
| C000029387 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Intermediate Duration Municipal Bond Fund
|
|
| Class Name |
Class A
|
|
| Trading Symbol |
LITAX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Intermediate Duration Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Class A |
$29 |
0.59%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 29
|
|
| Expense Ratio, Percent |
0.59%
|
[1] |
| AssetsNet |
$ 1,501,713,089
|
|
| Holdings Count | Holding |
566
|
|
| InvestmentCompanyPortfolioTurnover |
5.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$1,501,713,089 |
Total number of portfolio holdings |
566 |
Portfolio turnover for the reporting period |
5% | |
|
| Holdings [Text Block] |
Table Summary
Illinois |
12.3% |
New York |
9.2% |
California |
8.9% |
Texas |
7.0% |
Florida |
5.2% |
New Jersey |
4.8% |
Pennsylvania |
4.3% |
Arizona |
3.9% |
Massachusetts |
3.7% |
Alabama |
3.3% |
Table Summary
Municipal Bonds |
98.7% |
Other |
0.4% | |
|
| C000029389 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Intermediate Duration Municipal Bond Fund
|
|
| Class Name |
Class C
|
|
| Trading Symbol |
LITCX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Intermediate Duration Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Class C |
$59 |
1.19%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 59
|
|
| Expense Ratio, Percent |
1.19%
|
[2] |
| AssetsNet |
$ 1,501,713,089
|
|
| Holdings Count | Holding |
566
|
|
| InvestmentCompanyPortfolioTurnover |
5.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$1,501,713,089 |
Total number of portfolio holdings |
566 |
Portfolio turnover for the reporting period |
5% | |
|
| Holdings [Text Block] |
Table Summary
Illinois |
12.3% |
New York |
9.2% |
California |
8.9% |
Texas |
7.0% |
Florida |
5.2% |
New Jersey |
4.8% |
Pennsylvania |
4.3% |
Arizona |
3.9% |
Massachusetts |
3.7% |
Alabama |
3.3% |
Table Summary
Municipal Bonds |
98.7% |
Other |
0.4% | |
|
| C000253712 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Intermediate Duration Municipal Bond Fund
|
|
| Class Name |
Class S
|
|
| Trading Symbol |
SETDX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Intermediate Duration Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Class S |
$19 |
0.39%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 19
|
|
| Expense Ratio, Percent |
0.39%
|
[3] |
| AssetsNet |
$ 1,501,713,089
|
|
| Holdings Count | Holding |
566
|
|
| InvestmentCompanyPortfolioTurnover |
5.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$1,501,713,089 |
Total number of portfolio holdings |
566 |
Portfolio turnover for the reporting period |
5% | |
|
| Holdings [Text Block] |
Table Summary
Illinois |
12.3% |
New York |
9.2% |
California |
8.9% |
Texas |
7.0% |
Florida |
5.2% |
New Jersey |
4.8% |
Pennsylvania |
4.3% |
Arizona |
3.9% |
Massachusetts |
3.7% |
Alabama |
3.3% |
Table Summary
Municipal Bonds |
98.7% |
Other |
0.4% | |
|
| C000122658 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Intermediate Duration Municipal Bond Fund
|
|
| Class Name |
Institutional 2 Class
|
|
| Trading Symbol |
CTMRX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Intermediate Duration Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional 2 Class |
$16 |
0.33%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 16
|
|
| Expense Ratio, Percent |
0.33%
|
[4] |
| AssetsNet |
$ 1,501,713,089
|
|
| Holdings Count | Holding |
566
|
|
| InvestmentCompanyPortfolioTurnover |
5.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$1,501,713,089 |
Total number of portfolio holdings |
566 |
Portfolio turnover for the reporting period |
5% | |
|
| Holdings [Text Block] |
Table Summary
Illinois |
12.3% |
New York |
9.2% |
California |
8.9% |
Texas |
7.0% |
Florida |
5.2% |
New Jersey |
4.8% |
Pennsylvania |
4.3% |
Arizona |
3.9% |
Massachusetts |
3.7% |
Alabama |
3.3% |
Table Summary
Municipal Bonds |
98.7% |
Other |
0.4% | |
|
| C000184729 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Intermediate Duration Municipal Bond Fund
|
|
| Class Name |
Institutional 3 Class
|
|
| Trading Symbol |
CIMYX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Intermediate Duration Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional 3 Class |
$14 |
0.29%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 14
|
|
| Expense Ratio, Percent |
0.29%
|
[5] |
| AssetsNet |
$ 1,501,713,089
|
|
| Holdings Count | Holding |
566
|
|
| InvestmentCompanyPortfolioTurnover |
5.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$1,501,713,089 |
Total number of portfolio holdings |
566 |
Portfolio turnover for the reporting period |
5% | |
|
| Holdings [Text Block] |
Table Summary
Illinois |
12.3% |
New York |
9.2% |
California |
8.9% |
Texas |
7.0% |
Florida |
5.2% |
New Jersey |
4.8% |
Pennsylvania |
4.3% |
Arizona |
3.9% |
Massachusetts |
3.7% |
Alabama |
3.3% |
Table Summary
Municipal Bonds |
98.7% |
Other |
0.4% | |
|
| C000029392 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Intermediate Duration Municipal Bond Fund
|
|
| Class Name |
Institutional Class
|
|
| Trading Symbol |
SETMX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Intermediate Duration Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional Class |
$19 |
0.39%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 19
|
|
| Expense Ratio, Percent |
0.39%
|
[6] |
| AssetsNet |
$ 1,501,713,089
|
|
| Holdings Count | Holding |
566
|
|
| InvestmentCompanyPortfolioTurnover |
5.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$1,501,713,089 |
Total number of portfolio holdings |
566 |
Portfolio turnover for the reporting period |
5% | |
|
| Holdings [Text Block] |
Table Summary
Illinois |
12.3% |
New York |
9.2% |
California |
8.9% |
Texas |
7.0% |
Florida |
5.2% |
New Jersey |
4.8% |
Pennsylvania |
4.3% |
Arizona |
3.9% |
Massachusetts |
3.7% |
Alabama |
3.3% |
Table Summary
Municipal Bonds |
98.7% |
Other |
0.4% | |
|
| C000032942 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Massachusetts Intermediate Municipal Bond Fund
|
|
| Class Name |
Class A
|
|
| Trading Symbol |
LMIAX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Massachusetts Intermediate Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Class A |
$40 |
0.81%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 40
|
|
| Expense Ratio, Percent |
0.81%
|
[7] |
| AssetsNet |
$ 67,202,389
|
|
| Holdings Count | Holding |
62
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$67,202,389 |
Total number of portfolio holdings |
62 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
97.3% |
Floating Rate Notes |
2.1% |
Other |
0.3% | |
|
| Largest Holdings [Text Block] |
Table Summary
Massachusetts Bay Transportation Authority 0.000% 07/01/2032 |
6.2% |
Massachusetts State College Building Authority 0.000% 05/01/2028 |
5.6% |
Commonwealth of Massachusetts 5.000% 12/01/2030 |
4.5% |
Massachusetts Bay Transportation Authority 0.000% 07/01/2029 |
4.1% |
Massachusetts Development Finance Agency 5.000% 10/01/2036 |
2.4% |
Massachusetts Development Finance Agency 5.000% 11/15/2033 |
2.3% |
Massachusetts Development Finance Agency 4.000% 01/01/2031 |
2.3% |
Massachusetts Development Finance Agency 4.000% 10/01/2032 |
2.2% |
Massachusetts Development Finance Agency 5.000% 10/01/2033 |
1.8% |
Massachusetts Development Finance Agency 5.000% 10/01/2036 |
1.8% | |
|
| C000184731 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Massachusetts Intermediate Municipal Bond Fund
|
|
| Class Name |
Institutional 3 Class
|
|
| Trading Symbol |
CMMYX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Massachusetts Intermediate Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional 3 Class |
$23 |
0.47%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 23
|
|
| Expense Ratio, Percent |
0.47%
|
[8] |
| AssetsNet |
$ 67,202,389
|
|
| Holdings Count | Holding |
62
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$67,202,389 |
Total number of portfolio holdings |
62 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
97.3% |
Floating Rate Notes |
2.1% |
Other |
0.3% | |
|
| Largest Holdings [Text Block] |
Table Summary
Massachusetts Bay Transportation Authority 0.000% 07/01/2032 |
6.2% |
Massachusetts State College Building Authority 0.000% 05/01/2028 |
5.6% |
Commonwealth of Massachusetts 5.000% 12/01/2030 |
4.5% |
Massachusetts Bay Transportation Authority 0.000% 07/01/2029 |
4.1% |
Massachusetts Development Finance Agency 5.000% 10/01/2036 |
2.4% |
Massachusetts Development Finance Agency 5.000% 11/15/2033 |
2.3% |
Massachusetts Development Finance Agency 4.000% 01/01/2031 |
2.3% |
Massachusetts Development Finance Agency 4.000% 10/01/2032 |
2.2% |
Massachusetts Development Finance Agency 5.000% 10/01/2033 |
1.8% |
Massachusetts Development Finance Agency 5.000% 10/01/2036 |
1.8% | |
|
| C000032947 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Massachusetts Intermediate Municipal Bond Fund
|
|
| Class Name |
Institutional Class
|
|
| Trading Symbol |
SEMAX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Massachusetts Intermediate Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional Class |
$28 |
0.56%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 28
|
|
| Expense Ratio, Percent |
0.56%
|
[9] |
| AssetsNet |
$ 67,202,389
|
|
| Holdings Count | Holding |
62
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$67,202,389 |
Total number of portfolio holdings |
62 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
97.3% |
Floating Rate Notes |
2.1% |
Other |
0.3% | |
|
| Largest Holdings [Text Block] |
Table Summary
Massachusetts Bay Transportation Authority 0.000% 07/01/2032 |
6.2% |
Massachusetts State College Building Authority 0.000% 05/01/2028 |
5.6% |
Commonwealth of Massachusetts 5.000% 12/01/2030 |
4.5% |
Massachusetts Bay Transportation Authority 0.000% 07/01/2029 |
4.1% |
Massachusetts Development Finance Agency 5.000% 10/01/2036 |
2.4% |
Massachusetts Development Finance Agency 5.000% 11/15/2033 |
2.3% |
Massachusetts Development Finance Agency 4.000% 01/01/2031 |
2.3% |
Massachusetts Development Finance Agency 4.000% 10/01/2032 |
2.2% |
Massachusetts Development Finance Agency 5.000% 10/01/2033 |
1.8% |
Massachusetts Development Finance Agency 5.000% 10/01/2036 |
1.8% | |
|
| C000032951 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia New York Intermediate Municipal Bond Fund
|
|
| Class Name |
Class A
|
|
| Trading Symbol |
LNYAX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia New York Intermediate Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Class A |
$37 |
0.74%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 37
|
|
| Expense Ratio, Percent |
0.74%
|
[10] |
| AssetsNet |
$ 79,766,796
|
|
| Holdings Count | Holding |
97
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$79,766,796 |
Total number of portfolio holdings |
97 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
96.2% |
Money Market Funds |
2.6% | |
|
| Largest Holdings [Text Block] |
Table Summary
Metropolitan Transportation Authority 5.000% 11/15/2026 |
3.3% |
Port Authority of New York & New Jersey 5.000% 07/15/2034 |
3.3% |
Triborough Bridge & Tunnel Authority, Series B 5.000% 11/15/2031 |
2.8% |
Long Island Power Authority 5.000% 09/01/2041 |
2.8% |
City of Yonkers 5.000% 09/01/2028 |
2.7% |
New York State Dormitory Authority 5.000% 07/01/2037 |
2.7% |
New York City Transitional Finance Authority 5.000% 07/15/2036 |
2.6% |
TSASC, Inc. 5.000% 06/01/2031 |
2.6% |
City of Yonkers 5.000% 11/15/2028 |
2.3% |
Triborough Bridge & Tunnel Authority 5.000% 05/15/2042 |
2.1% | |
|
| C000169175 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia New York Intermediate Municipal Bond Fund
|
|
| Class Name |
Institutional 2 Class
|
|
| Trading Symbol |
CNYUX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia New York Intermediate Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional 2 Class |
$22 |
0.45%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 22
|
|
| Expense Ratio, Percent |
0.45%
|
[11] |
| AssetsNet |
$ 79,766,796
|
|
| Holdings Count | Holding |
97
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$79,766,796 |
Total number of portfolio holdings |
97 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
96.2% |
Money Market Funds |
2.6% | |
|
| Largest Holdings [Text Block] |
Table Summary
Metropolitan Transportation Authority 5.000% 11/15/2026 |
3.3% |
Port Authority of New York & New Jersey 5.000% 07/15/2034 |
3.3% |
Triborough Bridge & Tunnel Authority, Series B 5.000% 11/15/2031 |
2.8% |
Long Island Power Authority 5.000% 09/01/2041 |
2.8% |
City of Yonkers 5.000% 09/01/2028 |
2.7% |
New York State Dormitory Authority 5.000% 07/01/2037 |
2.7% |
New York City Transitional Finance Authority 5.000% 07/15/2036 |
2.6% |
TSASC, Inc. 5.000% 06/01/2031 |
2.6% |
City of Yonkers 5.000% 11/15/2028 |
2.3% |
Triborough Bridge & Tunnel Authority 5.000% 05/15/2042 |
2.1% | |
|
| C000184732 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia New York Intermediate Municipal Bond Fund
|
|
| Class Name |
Institutional 3 Class
|
|
| Trading Symbol |
CNYYX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia New York Intermediate Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional 3 Class |
$20 |
0.40%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 20
|
|
| Expense Ratio, Percent |
0.40%
|
[12] |
| AssetsNet |
$ 79,766,796
|
|
| Holdings Count | Holding |
97
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$79,766,796 |
Total number of portfolio holdings |
97 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
96.2% |
Money Market Funds |
2.6% | |
|
| Largest Holdings [Text Block] |
Table Summary
Metropolitan Transportation Authority 5.000% 11/15/2026 |
3.3% |
Port Authority of New York & New Jersey 5.000% 07/15/2034 |
3.3% |
Triborough Bridge & Tunnel Authority, Series B 5.000% 11/15/2031 |
2.8% |
Long Island Power Authority 5.000% 09/01/2041 |
2.8% |
City of Yonkers 5.000% 09/01/2028 |
2.7% |
New York State Dormitory Authority 5.000% 07/01/2037 |
2.7% |
New York City Transitional Finance Authority 5.000% 07/15/2036 |
2.6% |
TSASC, Inc. 5.000% 06/01/2031 |
2.6% |
City of Yonkers 5.000% 11/15/2028 |
2.3% |
Triborough Bridge & Tunnel Authority 5.000% 05/15/2042 |
2.1% | |
|
| C000032956 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia New York Intermediate Municipal Bond Fund
|
|
| Class Name |
Institutional Class
|
|
| Trading Symbol |
GNYTX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia New York Intermediate Municipal Bond Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional Class |
$24 |
0.49%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 24
|
|
| Expense Ratio, Percent |
0.49%
|
[13] |
| AssetsNet |
$ 79,766,796
|
|
| Holdings Count | Holding |
97
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$79,766,796 |
Total number of portfolio holdings |
97 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
96.2% |
Money Market Funds |
2.6% | |
|
| Largest Holdings [Text Block] |
Table Summary
Metropolitan Transportation Authority 5.000% 11/15/2026 |
3.3% |
Port Authority of New York & New Jersey 5.000% 07/15/2034 |
3.3% |
Triborough Bridge & Tunnel Authority, Series B 5.000% 11/15/2031 |
2.8% |
Long Island Power Authority 5.000% 09/01/2041 |
2.8% |
City of Yonkers 5.000% 09/01/2028 |
2.7% |
New York State Dormitory Authority 5.000% 07/01/2037 |
2.7% |
New York City Transitional Finance Authority 5.000% 07/15/2036 |
2.6% |
TSASC, Inc. 5.000% 06/01/2031 |
2.6% |
City of Yonkers 5.000% 11/15/2028 |
2.3% |
Triborough Bridge & Tunnel Authority 5.000% 05/15/2042 |
2.1% | |
|
| C000029377 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Strategic California Municipal Income Fund
|
|
| Class Name |
Class A
|
|
| Trading Symbol |
CLMPX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Strategic California Municipal Income Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Class A |
$37 |
0.74%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 37
|
|
| Expense Ratio, Percent |
0.74%
|
[14] |
| AssetsNet |
$ 304,154,647
|
|
| Holdings Count | Holding |
158
|
|
| InvestmentCompanyPortfolioTurnover |
7.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$304,154,647 |
Total number of portfolio holdings |
158 |
Portfolio turnover for the reporting period |
7% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
94.3% |
Floating Rate Notes |
3.0% |
Money Market Funds |
1.3% |
Other |
0.6% | |
|
| Largest Holdings [Text Block] |
Table Summary
California Community Choice Financing Authority, Series 2023 5.000% 02/01/2054 |
2.4% |
Puerto Rico Sales Tax Financing Corp., Series 2018A-1 0.000% 07/01/2046 |
1.7% |
Inland Valley Development Agency, Series 2014A 5.000% 09/01/2044 |
1.7% |
Puerto Rico Sales Tax Financing Corp., Series 2019A-1 5.000% 07/01/2058 |
1.6% |
California Statewide Communities Development Authority, Series 2018 4.000% 03/01/2042 |
1.5% |
Manteca Unified School District, Series 2006 0.000% 08/01/2032 |
1.5% |
East County Advanced Water Purification Joint Powers Authority, Series 2024 3.125% 09/01/2026 |
1.5% |
New York City Water & Sewer System, Series 2013 3.400% 06/15/2050 |
1.4% |
Cerritos Community College District, Series 2019C 3.000% 08/01/2044 |
1.4% |
California Municipal Finance Authority, Series 2021 4.000% 10/01/2046 |
1.4% | |
|
| C000029379 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Strategic California Municipal Income Fund
|
|
| Class Name |
Class C
|
|
| Trading Symbol |
CCAOX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Strategic California Municipal Income Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Class C |
$62 |
1.24%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 62
|
|
| Expense Ratio, Percent |
1.24%
|
[15] |
| AssetsNet |
$ 304,154,647
|
|
| Holdings Count | Holding |
158
|
|
| InvestmentCompanyPortfolioTurnover |
7.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$304,154,647 |
Total number of portfolio holdings |
158 |
Portfolio turnover for the reporting period |
7% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
94.3% |
Floating Rate Notes |
3.0% |
Money Market Funds |
1.3% |
Other |
0.6% | |
|
| Largest Holdings [Text Block] |
Table Summary
California Community Choice Financing Authority, Series 2023 5.000% 02/01/2054 |
2.4% |
Puerto Rico Sales Tax Financing Corp., Series 2018A-1 0.000% 07/01/2046 |
1.7% |
Inland Valley Development Agency, Series 2014A 5.000% 09/01/2044 |
1.7% |
Puerto Rico Sales Tax Financing Corp., Series 2019A-1 5.000% 07/01/2058 |
1.6% |
California Statewide Communities Development Authority, Series 2018 4.000% 03/01/2042 |
1.5% |
Manteca Unified School District, Series 2006 0.000% 08/01/2032 |
1.5% |
East County Advanced Water Purification Joint Powers Authority, Series 2024 3.125% 09/01/2026 |
1.5% |
New York City Water & Sewer System, Series 2013 3.400% 06/15/2050 |
1.4% |
Cerritos Community College District, Series 2019C 3.000% 08/01/2044 |
1.4% |
California Municipal Finance Authority, Series 2021 4.000% 10/01/2046 |
1.4% | |
|
| C000169172 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Strategic California Municipal Income Fund
|
|
| Class Name |
Institutional 2 Class
|
|
| Trading Symbol |
CCAUX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Strategic California Municipal Income Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional 2 Class |
$25 |
0.51%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 25
|
|
| Expense Ratio, Percent |
0.51%
|
[16] |
| AssetsNet |
$ 304,154,647
|
|
| Holdings Count | Holding |
158
|
|
| InvestmentCompanyPortfolioTurnover |
7.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$304,154,647 |
Total number of portfolio holdings |
158 |
Portfolio turnover for the reporting period |
7% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
94.3% |
Floating Rate Notes |
3.0% |
Money Market Funds |
1.3% |
Other |
0.6% | |
|
| Largest Holdings [Text Block] |
Table Summary
California Community Choice Financing Authority, Series 2023 5.000% 02/01/2054 |
2.4% |
Puerto Rico Sales Tax Financing Corp., Series 2018A-1 0.000% 07/01/2046 |
1.7% |
Inland Valley Development Agency, Series 2014A 5.000% 09/01/2044 |
1.7% |
Puerto Rico Sales Tax Financing Corp., Series 2019A-1 5.000% 07/01/2058 |
1.6% |
California Statewide Communities Development Authority, Series 2018 4.000% 03/01/2042 |
1.5% |
Manteca Unified School District, Series 2006 0.000% 08/01/2032 |
1.5% |
East County Advanced Water Purification Joint Powers Authority, Series 2024 3.125% 09/01/2026 |
1.5% |
New York City Water & Sewer System, Series 2013 3.400% 06/15/2050 |
1.4% |
Cerritos Community College District, Series 2019C 3.000% 08/01/2044 |
1.4% |
California Municipal Finance Authority, Series 2021 4.000% 10/01/2046 |
1.4% | |
|
| C000184727 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Strategic California Municipal Income Fund
|
|
| Class Name |
Institutional 3 Class
|
|
| Trading Symbol |
CCXYX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Strategic California Municipal Income Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional 3 Class |
$24 |
0.48%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 24
|
|
| Expense Ratio, Percent |
0.48%
|
[17] |
| AssetsNet |
$ 304,154,647
|
|
| Holdings Count | Holding |
158
|
|
| InvestmentCompanyPortfolioTurnover |
7.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$304,154,647 |
Total number of portfolio holdings |
158 |
Portfolio turnover for the reporting period |
7% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
94.3% |
Floating Rate Notes |
3.0% |
Money Market Funds |
1.3% |
Other |
0.6% | |
|
| Largest Holdings [Text Block] |
Table Summary
California Community Choice Financing Authority, Series 2023 5.000% 02/01/2054 |
2.4% |
Puerto Rico Sales Tax Financing Corp., Series 2018A-1 0.000% 07/01/2046 |
1.7% |
Inland Valley Development Agency, Series 2014A 5.000% 09/01/2044 |
1.7% |
Puerto Rico Sales Tax Financing Corp., Series 2019A-1 5.000% 07/01/2058 |
1.6% |
California Statewide Communities Development Authority, Series 2018 4.000% 03/01/2042 |
1.5% |
Manteca Unified School District, Series 2006 0.000% 08/01/2032 |
1.5% |
East County Advanced Water Purification Joint Powers Authority, Series 2024 3.125% 09/01/2026 |
1.5% |
New York City Water & Sewer System, Series 2013 3.400% 06/15/2050 |
1.4% |
Cerritos Community College District, Series 2019C 3.000% 08/01/2044 |
1.4% |
California Municipal Finance Authority, Series 2021 4.000% 10/01/2046 |
1.4% | |
|
| C000029380 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Strategic California Municipal Income Fund
|
|
| Class Name |
Institutional Class
|
|
| Trading Symbol |
CCAZX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Strategic California Municipal Income Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional Class |
$27 |
0.54%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 27
|
|
| Expense Ratio, Percent |
0.54%
|
[18] |
| AssetsNet |
$ 304,154,647
|
|
| Holdings Count | Holding |
158
|
|
| InvestmentCompanyPortfolioTurnover |
7.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$304,154,647 |
Total number of portfolio holdings |
158 |
Portfolio turnover for the reporting period |
7% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
94.3% |
Floating Rate Notes |
3.0% |
Money Market Funds |
1.3% |
Other |
0.6% | |
|
| Largest Holdings [Text Block] |
Table Summary
California Community Choice Financing Authority, Series 2023 5.000% 02/01/2054 |
2.4% |
Puerto Rico Sales Tax Financing Corp., Series 2018A-1 0.000% 07/01/2046 |
1.7% |
Inland Valley Development Agency, Series 2014A 5.000% 09/01/2044 |
1.7% |
Puerto Rico Sales Tax Financing Corp., Series 2019A-1 5.000% 07/01/2058 |
1.6% |
California Statewide Communities Development Authority, Series 2018 4.000% 03/01/2042 |
1.5% |
Manteca Unified School District, Series 2006 0.000% 08/01/2032 |
1.5% |
East County Advanced Water Purification Joint Powers Authority, Series 2024 3.125% 09/01/2026 |
1.5% |
New York City Water & Sewer System, Series 2013 3.400% 06/15/2050 |
1.4% |
Cerritos Community College District, Series 2019C 3.000% 08/01/2044 |
1.4% |
California Municipal Finance Authority, Series 2021 4.000% 10/01/2046 |
1.4% | |
|
| C000032969 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Strategic New York Municipal Income Fund
|
|
| Class Name |
Class A
|
|
| Trading Symbol |
COLNX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Strategic New York Municipal Income Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Class A |
$38 |
0.76%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 38
|
|
| Expense Ratio, Percent |
0.76%
|
[19] |
| AssetsNet |
$ 113,663,606
|
|
| Holdings Count | Holding |
100
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$113,663,606 |
Total number of portfolio holdings |
100 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
95.2% |
Money Market Funds |
3.1% |
Other |
0.7% | |
|
| Largest Holdings [Text Block] |
Table Summary
New York City Municipal Water Finance Authority 5.250% 06/15/2055 |
2.8% |
Triborough Bridge & Tunnel Authority 5.250% 05/15/2064 |
2.7% |
TSASC, Inc. 5.000% 06/01/2041 |
2.7% |
New York Transportation Development Corp. 5.375% 06/30/2060 |
2.6% |
City of New York 4.000% 09/01/2046 |
2.5% |
New York City Transitional Finance Authority 4.000% 08/01/2048 |
2.4% |
Port Authority of New York & New Jersey 6.125% 06/01/2094 |
2.0% |
Triborough Bridge & Tunnel Authority 5.500% 05/15/2063 |
1.8% |
New York City Municipal Water Finance Authority 5.250% 06/15/2053 |
1.8% |
New York State Dormitory Authority 5.250% 10/01/2049 |
1.8% | |
|
| C000032971 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Strategic New York Municipal Income Fund
|
|
| Class Name |
Class C
|
|
| Trading Symbol |
CNYCX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Strategic New York Municipal Income Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Class C |
$60 |
1.21%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 60
|
|
| Expense Ratio, Percent |
1.21%
|
[20] |
| AssetsNet |
$ 113,663,606
|
|
| Holdings Count | Holding |
100
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$113,663,606 |
Total number of portfolio holdings |
100 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
95.2% |
Money Market Funds |
3.1% |
Other |
0.7% | |
|
| Largest Holdings [Text Block] |
Table Summary
New York City Municipal Water Finance Authority 5.250% 06/15/2055 |
2.8% |
Triborough Bridge & Tunnel Authority 5.250% 05/15/2064 |
2.7% |
TSASC, Inc. 5.000% 06/01/2041 |
2.7% |
New York Transportation Development Corp. 5.375% 06/30/2060 |
2.6% |
City of New York 4.000% 09/01/2046 |
2.5% |
New York City Transitional Finance Authority 4.000% 08/01/2048 |
2.4% |
Port Authority of New York & New Jersey 6.125% 06/01/2094 |
2.0% |
Triborough Bridge & Tunnel Authority 5.500% 05/15/2063 |
1.8% |
New York City Municipal Water Finance Authority 5.250% 06/15/2053 |
1.8% |
New York State Dormitory Authority 5.250% 10/01/2049 |
1.8% | |
|
| C000122676 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Strategic New York Municipal Income Fund
|
|
| Class Name |
Institutional 2 Class
|
|
| Trading Symbol |
CNYRX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Strategic New York Municipal Income Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional 2 Class |
$24 |
0.49%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 24
|
|
| Expense Ratio, Percent |
0.49%
|
[21] |
| AssetsNet |
$ 113,663,606
|
|
| Holdings Count | Holding |
100
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$113,663,606 |
Total number of portfolio holdings |
100 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
95.2% |
Money Market Funds |
3.1% |
Other |
0.7% | |
|
| Largest Holdings [Text Block] |
Table Summary
New York City Municipal Water Finance Authority 5.250% 06/15/2055 |
2.8% |
Triborough Bridge & Tunnel Authority 5.250% 05/15/2064 |
2.7% |
TSASC, Inc. 5.000% 06/01/2041 |
2.7% |
New York Transportation Development Corp. 5.375% 06/30/2060 |
2.6% |
City of New York 4.000% 09/01/2046 |
2.5% |
New York City Transitional Finance Authority 4.000% 08/01/2048 |
2.4% |
Port Authority of New York & New Jersey 6.125% 06/01/2094 |
2.0% |
Triborough Bridge & Tunnel Authority 5.500% 05/15/2063 |
1.8% |
New York City Municipal Water Finance Authority 5.250% 06/15/2053 |
1.8% |
New York State Dormitory Authority 5.250% 10/01/2049 |
1.8% | |
|
| C000184733 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Strategic New York Municipal Income Fund
|
|
| Class Name |
Institutional 3 Class
|
|
| Trading Symbol |
CNTYX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Strategic New York Municipal Income Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional 3 Class |
$22 |
0.43%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 22
|
|
| Expense Ratio, Percent |
0.43%
|
[22] |
| AssetsNet |
$ 113,663,606
|
|
| Holdings Count | Holding |
100
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$113,663,606 |
Total number of portfolio holdings |
100 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
95.2% |
Money Market Funds |
3.1% |
Other |
0.7% | |
|
| Largest Holdings [Text Block] |
Table Summary
New York City Municipal Water Finance Authority 5.250% 06/15/2055 |
2.8% |
Triborough Bridge & Tunnel Authority 5.250% 05/15/2064 |
2.7% |
TSASC, Inc. 5.000% 06/01/2041 |
2.7% |
New York Transportation Development Corp. 5.375% 06/30/2060 |
2.6% |
City of New York 4.000% 09/01/2046 |
2.5% |
New York City Transitional Finance Authority 4.000% 08/01/2048 |
2.4% |
Port Authority of New York & New Jersey 6.125% 06/01/2094 |
2.0% |
Triborough Bridge & Tunnel Authority 5.500% 05/15/2063 |
1.8% |
New York City Municipal Water Finance Authority 5.250% 06/15/2053 |
1.8% |
New York State Dormitory Authority 5.250% 10/01/2049 |
1.8% | |
|
| C000106577 |
|
|
| Shareholder Report [Line Items] |
|
|
| Fund Name |
Columbia Strategic New York Municipal Income Fund
|
|
| Class Name |
Institutional Class
|
|
| Trading Symbol |
CNYZX
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Columbia Strategic New York Municipal Income Fund (the Fund) for the period of November 1, 2025 to April 30, 2026.
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment)
Table Summary
Class |
Cost of a $10,000 investment |
Cost paid as a percentage of a $10,000 investment |
Institutional Class |
$25 |
0.51%Footnote Reference(a) |
| Footnote |
Description |
Footnote(a) |
Annualized | |
|
| Expenses Paid, Amount |
$ 25
|
|
| Expense Ratio, Percent |
0.51%
|
[23] |
| AssetsNet |
$ 113,663,606
|
|
| Holdings Count | Holding |
100
|
|
| InvestmentCompanyPortfolioTurnover |
4.00%
|
|
| Additional Fund Statistics [Text Block] |
Table Summary
Fund net assets |
$113,663,606 |
Total number of portfolio holdings |
100 |
Portfolio turnover for the reporting period |
4% | |
|
| Holdings [Text Block] |
Table Summary
Municipal Bonds |
95.2% |
Money Market Funds |
3.1% |
Other |
0.7% | |
|
| Largest Holdings [Text Block] |
Table Summary
New York City Municipal Water Finance Authority 5.250% 06/15/2055 |
2.8% |
Triborough Bridge & Tunnel Authority 5.250% 05/15/2064 |
2.7% |
TSASC, Inc. 5.000% 06/01/2041 |
2.7% |
New York Transportation Development Corp. 5.375% 06/30/2060 |
2.6% |
City of New York 4.000% 09/01/2046 |
2.5% |
New York City Transitional Finance Authority 4.000% 08/01/2048 |
2.4% |
Port Authority of New York & New Jersey 6.125% 06/01/2094 |
2.0% |
Triborough Bridge & Tunnel Authority 5.500% 05/15/2063 |
1.8% |
New York City Municipal Water Finance Authority 5.250% 06/15/2053 |
1.8% |
New York State Dormitory Authority 5.250% 10/01/2049 |
1.8% | |
|
|
|