| Form N-CSR Cover | 12 Months Ended |
| Oct. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| 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 | Oct. 31, 2024 |
| Shareholder Report | 12 Months Ended |
| Oct. 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| 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 | Oct. 31, 2024 |
| Columbia Strategic New York Municipal Income Fund - Class A | |
| 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 annual shareholder report contains important information about Columbia Strategic New York Municipal Income Fund (the Fund) for the period of November 1, 2023 to October 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 1-800-345-6611. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Class A $ 0.76 % |
| Expenses Paid, Amount | $ 82 |
| Expense Ratio, Percent | 0.76% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The performance of Class A shares for the period presented is shown in the Average Annual Total Returns Top Performance Contributors Allocations Security selection Top Performance Detractors Allocations Security selection |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns (%) 1 year 5 years 10 years Class A (excluding sales charges) 15.19 0.67 2.09 Class A (including sales charges) 11.76 0.07 1.78 Bloomberg New York Municipal Bond Index 10.03 1.00 2.18 Bloomberg Municipal Bond Index 9.70 1.05 2.30 |
| No Deduction of Taxes [Text Block] | Performance does not reflect the deduction of taxes that a shareholder may pay on fund distributions or on the redemptions of fund shares. |
| Material Change Date | Aug. 01, 2024 |
| Updated Performance Information Location [Text Block] | Visit columbiathreadneedleus.com/investment-products/mutual-funds |
| Net Assets | $ 128,928,163 |
| Holdings Count | Holding | 100 |
| Advisory Fees Paid, Amount | $ 592,487 |
| Investment Company, Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 100 Management services fees $ Portfolio turnover for the reporting period 30% |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change. Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. Top Holdings New York City Municipal Water Finance Authority 2.6 % City of New York 2.5 % Triborough Bridge & Tunnel Authority 2.5 % New York Transportation Development Corp. 2.4 % TSASC, Inc. 2.4 % New York State Dormitory Authority 2.3 % City of New York 2.3 % New York City Transitional Finance Authority 2.3 % Puerto Rico Sales Tax Financing Corp. 2.2 % Triborough Bridge & Tunnel Authority 2.1 % Asset Categories Credit Quality |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. |
| Largest Holdings [Text Block] | Top Holdings New York City Municipal Water Finance Authority 2.6 % City of New York 2.5 % Triborough Bridge & Tunnel Authority 2.5 % New York Transportation Development Corp. 2.4 % TSASC, Inc. 2.4 % New York State Dormitory Authority 2.3 % City of New York 2.3 % New York City Transitional Finance Authority 2.3 % Puerto Rico Sales Tax Financing Corp. 2.2 % Triborough Bridge & Tunnel Authority 2.1 % |
| Material Fund Change [Text Block] | Certain Fund Changes This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature Effective August 1, 2024, the Fund amended its Prospectus’ Principal Investment Strategies to reflect that the Fund may enter into tender option bond (TOB) transactions and may invest in derivatives, such as floating rate municipal securities (floaters) and inverse floating rate municipal securities (inverse floaters) to add incremental income, futures (including interest rate and Treasury bond futures) to manage duration and hedge against changes in interest rates, and swaps, including Municipal Market Data Rate Locks (MMD Rate Locks) to manage duration and hedge against changes in interest rates. In addition, the Fund amended its Prospectus’ Principal Risks to include disclosure of the risks associated with investing in these instruments and derivatives generally. |
| Material Fund Change Strategies [Text Block] | Effective August 1, 2024, the Fund amended its Prospectus’ Principal Investment Strategies to reflect that the Fund may enter into tender option bond (TOB) transactions and may invest in derivatives, such as floating rate municipal securities (floaters) and inverse floating rate municipal securities (inverse floaters) to add incremental income, futures (including interest rate and Treasury bond futures) to manage duration and hedge against changes in interest rates, and swaps, including Municipal Market Data Rate Locks (MMD Rate Locks) to manage duration and hedge against changes in interest rates. |
| Material Fund Change Risks Change [Text Block] | In addition, the Fund amended its Prospectus’ Principal Risks to include disclosure of the risks associated with investing in these instruments and derivatives generally. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature |
| Updated Prospectus Phone Number | 1-800-345-6611 |
| Updated Prospectus Web Address | columbiathreadneedleus.com/resources/literature |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | |
| Shareholder Report [Line Items] | |
| Fund Name | Columbia Strategic New York Municipal Income Fund |
| Class Name | Advisor Class |
| Trading Symbol | CNYEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Columbia Strategic New York Municipal Income Fund (the Fund) for the period of November 1, 2023 to October 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 1-800-345-6611. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Advisor Class $ 0.51 % |
| Expenses Paid, Amount | $ 55 |
| Expense Ratio, Percent | 0.51% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The performance of Advisor Class shares for the period presented is shown in the Average Annual Total Returns table. Top Performance Contributors Allocations Security selection general Top Performance Detractors Allocations Security selection |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns (%) 1 year 5 years 10 years Advisor Class 15.46 0.91 2.34 Bloomberg New York Municipal Bond Index 10.03 1.00 2.18 Bloomberg Municipal Bond Index 9.70 1.05 2.30 |
| No Deduction of Taxes [Text Block] | Performance does not reflect the deduction of taxes that a shareholder may pay on fund distributions or on the redemptions of fund shares. |
| Material Change Date | Aug. 01, 2024 |
| Updated Performance Information Location [Text Block] | Visit columbiathreadneedleus.com/investment-products/mutual-funds |
| Net Assets | $ 128,928,163 |
| Holdings Count | Holding | 100 |
| Advisory Fees Paid, Amount | $ 592,487 |
| Investment Company, Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 100 Management services fees $ Portfolio turnover for the reporting period 30% |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change. Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. Top Holdings New York City Municipal Water Finance Authority 2.6 % City of New York 2.5 % Triborough Bridge & Tunnel Authority 2.5 % New York Transportation Development Corp. 2.4 % TSASC, Inc. 2.4 % New York State Dormitory Authority 2.3 % City of New York 2.3 % New York City Transitional Finance Authority 2.3 % Puerto Rico Sales Tax Financing Corp. 2.2 % Triborough Bridge & Tunnel Authority 2.1 % Asset Categories Credit Quality |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. |
| Largest Holdings [Text Block] | Top Holdings New York City Municipal Water Finance Authority 2.6 % City of New York 2.5 % Triborough Bridge & Tunnel Authority 2.5 % New York Transportation Development Corp. 2.4 % TSASC, Inc. 2.4 % New York State Dormitory Authority 2.3 % City of New York 2.3 % New York City Transitional Finance Authority 2.3 % Puerto Rico Sales Tax Financing Corp. 2.2 % Triborough Bridge & Tunnel Authority 2.1 % |
| Material Fund Change [Text Block] | Certain Fund Changes This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature Effective August 1, 2024 |
| Material Fund Change Strategies [Text Block] | Effective August 1, 2024 |
| Material Fund Change Risks Change [Text Block] | In addition, the Fund amended its Prospectus’ Principal Risks to include disclosure of the risks associated with investing in these instruments and derivatives generally. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature |
| Updated Prospectus Phone Number | 1-800-345-6611 |
| Updated Prospectus Web Address | columbiathreadneedleus.com/resources/literature |
| Columbia Strategic New York Municipal Income Fund - Class C | |
| 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 annual shareholder report contains important information about Columbia Strategic New York Municipal Income Fund (the Fund) for the period of November 1, 2023 to October 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 1-800-345-6611. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Class C $ 1.21 % |
| Expenses Paid, Amount | $ 130 |
| Expense Ratio, Percent | 1.21% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The performance of Class C shares for the period presented is shown in the Average Annual Total Returns table. Top Performance Contributors Allocations benchmark Security selection Top Performance Detractors Allocations Security selection |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns (%) 1 year 5 years 10 years Class C (excluding sales charges) 14.69 0.20 1.62 Class C (including sales charges) 13.69 0.20 1.62 Bloomberg New York Municipal Bond Index 10.03 1.00 2.18 Bloomberg Municipal Bond Index 9.70 1.05 2.30 |
| No Deduction of Taxes [Text Block] | Performance does not reflect the deduction of taxes that a shareholder may pay on fund distributions or on the redemptions of fund shares. |
| Material Change Date | Aug. 01, 2024 |
| Updated Performance Information Location [Text Block] | Visit columbiathreadneedleus.com/investment-products/mutual-funds |
| Net Assets | $ 128,928,163 |
| Holdings Count | Holding | 100 |
| Advisory Fees Paid, Amount | $ 592,487 |
| Investment Company, Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 100 Management services fees $ Portfolio turnover for the reporting period 30% |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change. Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. Top Holdings New York City Municipal Water Finance Authority 2.6% City of New York 2.5% Triborough Bridge & Tunnel Authority 2.5% New York Transportation Development Corp. 2.4% TSASC, Inc. 2.4% New York State Dormitory Authority 2.3% City of New York 2.3% New York City Transitional Finance Authority 2.3% Puerto Rico Sales Tax Financing Corp. 2.2% Triborough Bridge & Tunnel Authority 2.1% Asset Categories Credit Quality |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. |
| Largest Holdings [Text Block] | Top Holdings New York City Municipal Water Finance Authority 2.6% City of New York 2.5% Triborough Bridge & Tunnel Authority 2.5% New York Transportation Development Corp. 2.4% TSASC, Inc. 2.4% New York State Dormitory Authority 2.3% City of New York 2.3% New York City Transitional Finance Authority 2.3% Puerto Rico Sales Tax Financing Corp. 2.2% Triborough Bridge & Tunnel Authority 2.1% |
| Material Fund Change [Text Block] | Certain Fund Changes This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature Effective August 1, 2024, the Fund amended its Prospectus’ Principal Investment Strategies to reflect that the Fund may enter into tender option bond (TOB) transactions and may invest in derivatives, such as floating rate municipal securities (floaters) and inverse floating rate municipal securities (inverse floaters) to add incremental income, futures (including interest rate and Treasury bond futures) to manage duration and hedge against changes in interest rates, and swaps, including Municipal Market Data Rate Locks (MMD Rate Locks) to manage duration and hedge against changes in interest rates. In addition, the Fund amended its Prospectus’ Principal Risks to include disclosure of the risks associated with investing in these instruments and derivatives generally. |
| Material Fund Change Strategies [Text Block] | Effective August 1, 2024, the Fund amended its Prospectus’ Principal Investment Strategies to reflect that the Fund may enter into tender option bond (TOB) transactions and may invest in derivatives, such as floating rate municipal securities (floaters) and inverse floating rate municipal securities (inverse floaters) to add incremental income, futures (including interest rate and Treasury bond futures) to manage duration and hedge against changes in interest rates, and swaps, including Municipal Market Data Rate Locks (MMD Rate Locks) to manage duration and hedge against changes in interest rates. |
| Material Fund Change Risks Change [Text Block] | In addition, the Fund amended its Prospectus’ Principal Risks to include disclosure of the risks associated with investing in these instruments and derivatives generally. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature |
| Updated Prospectus Phone Number | 1-800-345-6611 |
| Updated Prospectus Web Address | columbiathreadneedleus.com/resources/literature |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | |
| 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 annual shareholder report contains important information about Columbia Strategic New York Municipal Income Fund (the Fund) for the period of November 1, 2023 to October 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 1-800-345-6611. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Institutional Class $ 0.51 % |
| Expenses Paid, Amount | $ 55 |
| Expense Ratio, Percent | 0.51% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The performance of Institutional Class shares for the period presented is shown in the Average Annual Total Returns table. Top Performance Contributors Allocations Security selection Top Performance Detractors Allocations Security selection |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns (%) 1 year 5 years 10 years Institutional Class 15.50 0.90 2.33 Bloomberg New York Municipal Bond Index 10.03 1.00 2.18 Bloomberg Municipal Bond Index 9.70 1.05 2.30 |
| No Deduction of Taxes [Text Block] | Performance does not reflect the deduction of taxes that a shareholder may pay on fund distributions or on the redemptions of fund shares. |
| Material Change Date | Aug. 01, 2024 |
| Updated Performance Information Location [Text Block] | Visit columbiathreadneedleus.com/investment-products/mutual-funds |
| Net Assets | $ 128,928,163 |
| Holdings Count | Holding | 100 |
| Advisory Fees Paid, Amount | $ 592,487 |
| Investment Company, Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 100 Management services fees $ Portfolio turnover for the reporting period 30% |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change. Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. Top Holdings New York City Municipal Water Finance Authority 2.6 % City of New York 2.5 % Triborough Bridge & Tunnel Authority 2.5 % New York Transportation Development Corp. 2.4 % TSASC, Inc. 2.4 % New York State Dormitory Authority 2.3 % City of New York 2.3 % New York City Transitional Finance Authority 2.3 % Puerto Rico Sales Tax Financing Corp. 2.2 % Triborough Bridge & Tunnel Authority 2.1 % Asset Categories Credit Quality |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. |
| Largest Holdings [Text Block] | Top Holdings New York City Municipal Water Finance Authority 2.6 % City of New York 2.5 % Triborough Bridge & Tunnel Authority 2.5 % New York Transportation Development Corp. 2.4 % TSASC, Inc. 2.4 % New York State Dormitory Authority 2.3 % City of New York 2.3 % New York City Transitional Finance Authority 2.3 % Puerto Rico Sales Tax Financing Corp. 2.2 % Triborough Bridge & Tunnel Authority 2.1 % |
| Material Fund Change [Text Block] | Certain Fund Changes This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature Effective August 1, 2024, the Fund amended its Prospectus’ Principal Investment Strategies to reflect that the Fund may enter into tender option bond (TOB) transactions and may invest in derivatives, such as floating rate municipal securities (floaters) and inverse floating rate municipal securities (inverse floaters) to add incremental income, futures (including interest rate and Treasury bond futures) to manage duration and hedge against changes in interest rates, and swaps, including Municipal Market Data Rate Locks (MMD Rate Locks) to manage duration and hedge against changes in interest rates. In addition, the Fund amended its Prospectus’ Principal Risks to include disclosure of the risks associated with investing in these instruments and derivatives generally. |
| Material Fund Change Strategies [Text Block] | Effective August 1, 2024, the Fund amended its Prospectus’ Principal Investment Strategies to reflect that the Fund may enter into tender option bond (TOB) transactions and may invest in derivatives, such as floating rate municipal securities (floaters) and inverse floating rate municipal securities (inverse floaters) to add incremental income, futures (including interest rate and Treasury bond futures) to manage duration and hedge against changes in interest rates, and swaps, including Municipal Market Data Rate Locks (MMD Rate Locks) to manage duration and hedge against changes in interest rates. |
| Material Fund Change Risks Change [Text Block] | In addition, the Fund amended its Prospectus’ Principal Risks to include disclosure of the risks associated with investing in these instruments and derivatives generally. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature |
| Updated Prospectus Phone Number | 1-800-345-6611 |
| Updated Prospectus Web Address | columbiathreadneedleus.com/resources/literature |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | |
| 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 annual shareholder report contains important information about Columbia Strategic New York Municipal Income Fund (the Fund) for the period of November 1, 2023 to October 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 1-800-345-6611. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Institutional 2 Class $ 0.50 % |
| Expenses Paid, Amount | $ 54 |
| Expense Ratio, Percent | 0.50% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The performance of Institutional 2 Class shares for the period presented is shown in the Average Annual Total Returns table. Top Performance Contributors Allocations Security selection Top Performance Detractors Allocations Security selection community |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns (%) 1 year 5 years 10 years Institutional 2 Class 15.49 0.92 2.36 Bloomberg New York Municipal Bond Index 10.03 1.00 2.18 Bloomberg Municipal Bond Index 9.70 1.05 2.30 |
| No Deduction of Taxes [Text Block] | Performance does not reflect the deduction of taxes that a shareholder may pay on fund distributions or on the redemptions of fund shares. |
| Material Change Date | Aug. 01, 2024 |
| Updated Performance Information Location [Text Block] | Visit columbiathreadneedleus.com/investment-products/mutual-funds |
| Net Assets | $ 128,928,163 |
| Holdings Count | Holding | 100 |
| Advisory Fees Paid, Amount | $ 592,487 |
| Investment Company, Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 100 Management services fees $ Portfolio turnover for the reporting period 30% |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change. Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. Top Holdings New York City Municipal Water Finance Authority 2.6 % City of New York 2.5 % Triborough Bridge & Tunnel Authority 2.5 % New York Transportation Development Corp. 2.4 % TSASC, Inc. 2.4 % New York State Dormitory Authority 2.3 % City of New York 2.3 % New York City Transitional Finance Authority 2.3 % Puerto Rico Sales Tax Financing Corp. 2.2 % Triborough Bridge & Tunnel Authority 2.1 % Asset Categories Credit Quality |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. |
| Largest Holdings [Text Block] | Top Holdings New York City Municipal Water Finance Authority 2.6 % City of New York 2.5 % Triborough Bridge & Tunnel Authority 2.5 % New York Transportation Development Corp. 2.4 % TSASC, Inc. 2.4 % New York State Dormitory Authority 2.3 % City of New York 2.3 % New York City Transitional Finance Authority 2.3 % Puerto Rico Sales Tax Financing Corp. 2.2 % Triborough Bridge & Tunnel Authority 2.1 % |
| Material Fund Change [Text Block] | Certain Fund Changes This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature Effective August 1, 2024, the Fund amended its Prospectus’ Principal Investment Strategies to reflect that the Fund may enter into tender option bond (TOB) transactions and may invest in derivatives, such as floating rate municipal securities (floaters) and inverse floating rate municipal securities (inverse floaters) to add incremental income, futures (including interest rate and Treasury bond futures) to manage duration and hedge against changes in interest rates, and swaps, including Municipal Market Data Rate Locks (MMD Rate Locks) to manage duration and hedge against changes in interest rates. In addition, the Fund amended its Prospectus’ Principal Risks to include disclosure of the risks associated with investing in these instruments and derivatives generally. |
| Material Fund Change Strategies [Text Block] | Effective August 1, 2024, the Fund amended its Prospectus’ Principal Investment Strategies to reflect that the Fund may enter into tender option bond (TOB) transactions and may invest in derivatives, such as floating rate municipal securities (floaters) and inverse floating rate municipal securities (inverse floaters) to add incremental income, futures (including interest rate and Treasury bond futures) to manage duration and hedge against changes in interest rates, and swaps, including Municipal Market Data Rate Locks (MMD Rate Locks) to manage duration and hedge against changes in interest rates. |
| Material Fund Change Risks Change [Text Block] | In addition, the Fund amended its Prospectus’ Principal Risks to include disclosure of the risks associated with investing in these instruments and derivatives generally. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature |
| Updated Prospectus Phone Number | 1-800-345-6611 |
| Updated Prospectus Web Address | columbiathreadneedleus.com/resources/literature |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | |
| 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 annual shareholder report contains important information about Columbia Strategic New York Municipal Income Fund (the Fund) for the period of November 1, 2023 to October 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 1-800-345-6611. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Institutional 3 Class $ 0.44 % |
| Expenses Paid, Amount | $ 47 |
| Expense Ratio, Percent | 0.44% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The performance of Institutional 3 Class shares for the period presented is shown in the Average Annual Total Returns table. Top Performance Contributors Allocations performance Security selection Top Performance Detractors Allocations Security selection |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns (%) 1 year 5 years 10 years Institutional 3 Class (a) 15.57 0.98 2.33 Bloomberg New York Municipal Bond Index 10.03 1.00 2.18 Bloomberg Municipal Bond Index 9.70 1.05 2.30 (a) The returns shown for periods prior to March 1, 2017 (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of Class A. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit columbiathreadneedleus.com/investor/investment-products/mutual-funds/appended-performance |
| No Deduction of Taxes [Text Block] | Performance does not reflect the deduction of taxes that a shareholder may pay on fund distributions or on the redemptions of fund shares. |
| Material Change Date | Aug. 01, 2024 |
| Updated Performance Information Location [Text Block] | Visit columbiathreadneedleus.com/investment-products/mutual-funds |
| Net Assets | $ 128,928,163 |
| Holdings Count | Holding | 100 |
| Advisory Fees Paid, Amount | $ 592,487 |
| Investment Company, Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 100 Management services fees $ Portfolio turnover for the reporting period 30% |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change. Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. Top Holdings New York City Municipal Water Finance Authority 2.6 % City of New York 2.5 % Triborough Bridge & Tunnel Authority 2.5 % New York Transportation Development Corp. 2.4 % TSASC, Inc. 2.4 % New York State Dormitory Authority 2.3 % City of New York 2.3 % New York City Transitional Finance Authority 2.3 % Puerto Rico Sales Tax Financing Corp. 2.2 % Triborough Bridge & Tunnel Authority 2.1 % Asset Categories Credit Quality |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. |
| Largest Holdings [Text Block] | Top Holdings New York City Municipal Water Finance Authority 2.6 % City of New York 2.5 % Triborough Bridge & Tunnel Authority 2.5 % New York Transportation Development Corp. 2.4 % TSASC, Inc. 2.4 % New York State Dormitory Authority 2.3 % City of New York 2.3 % New York City Transitional Finance Authority 2.3 % Puerto Rico Sales Tax Financing Corp. 2.2 % Triborough Bridge & Tunnel Authority 2.1 % |
| Material Fund Change [Text Block] | Certain Fund Changes This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature Effective August 1, 2024, the Fund amended its Prospectus’ Principal Investment Strategies to reflect that the Fund may enter into tender option bond (TOB) transactions and may invest in derivatives, such as floating rate municipal securities (floaters) and inverse floating rate municipal securities (inverse floaters) to add incremental income, futures (including interest rate and Treasury bond futures) to manage duration and hedge against changes in interest rates, and swaps, including Municipal Market Data Rate Locks (MMD Rate Locks) to manage duration and hedge against changes in interest rates. In addition, the Fund amended its Prospectus’ Principal Risks to include disclosure of the risks associated with investing in these instruments and derivatives generally. |
| Material Fund Change Strategies [Text Block] | Effective August 1, 2024, the Fund amended its Prospectus’ Principal Investment Strategies to reflect that the Fund may enter into tender option bond (TOB) transactions and may invest in derivatives, such as floating rate municipal securities (floaters) and inverse floating rate municipal securities (inverse floaters) to add incremental income, futures (including interest rate and Treasury bond futures) to manage duration and hedge against changes in interest rates, and swaps, including Municipal Market Data Rate Locks (MMD Rate Locks) to manage duration and hedge against changes in interest rates. |
| Material Fund Change Risks Change [Text Block] | In addition, the Fund amended its Prospectus’ Principal Risks to include disclosure of the risks associated with investing in these instruments and derivatives generally. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund during the reporting period. For more complete information, you may review the Fund’s prospectus, which is available at columbiathreadneedleus.com/resources/literature |
| Updated Prospectus Phone Number | 1-800-345-6611 |
| Updated Prospectus Web Address | columbiathreadneedleus.com/resources/literature |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | ||||||||||
| Oct. 31, 2024 | Oct. 31, 2023 | Oct. 31, 2022 | Oct. 31, 2021 | Oct. 31, 2020 | Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2015 | Oct. 31, 2014 | |
| Columbia Strategic New York Municipal Income Fund - Class A | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class A (including sales charges) | ||||||||||
| Account Value | $ 11,933 | $ 10,359 | $ 10,135 | $ 12,337 | $ 11,724 | $ 11,541 | $ 10,552 | $ 10,660 | $ 10,494 | $ 10,039 | $ 9,703 |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Advisor Class | ||||||||||
| Account Value | $ 12,603 | 10,916 | 10,654 | 12,935 | 12,265 | 12,044 | 10,983 | 11,069 | 10,870 | 10,372 | 10,000 |
| Columbia Strategic New York Municipal Income Fund - Class C | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class C (including sales charges) | ||||||||||
| Account Value | $ 11,748 | 10,244 | 10,068 | 12,312 | 11,757 | 11,630 | 10,666 | 10,839 | 10,718 | 10,300 | 10,000 |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Institutional Class | ||||||||||
| Account Value | $ 12,595 | 10,905 | 10,648 | 12,926 | 12,257 | 12,043 | 10,968 | 11,069 | 10,869 | 10,372 | 10,000 |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Institutional 2 Class | ||||||||||
| Account Value | $ 12,625 | 10,932 | 10,668 | 12,950 | 12,273 | 12,058 | 10,978 | 11,079 | 10,864 | 10,376 | 10,000 |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Institutional 3 Class | ||||||||||
| Account Value | $ 12,590 | 10,894 | 10,625 | 12,893 | 12,213 | 11,989 | 10,928 | 11,008 | 10,815 | 10,346 | 10,000 |
| Bloomberg Municipal Bond Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | ||||||||||
| Account Value | $ 12,548 | 11,439 | 11,144 | 12,661 | 12,336 | 11,908 | 10,883 | 10,939 | 10,704 | 10,287 | 10,000 |
| Bloomberg New York Municipal Bond Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg New York Municipal Bond Index | ||||||||||
| Account Value | $ 12,411 | $ 11,280 | $ 10,929 | $ 12,502 | $ 12,076 | $ 11,811 | $ 10,827 | $ 10,923 | $ 10,691 | $ 10,297 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 120 Months Ended | |
| Oct. 31, 2024 | Oct. 31, 2024 | Oct. 31, 2024 | ||
| Columbia Strategic New York Municipal Income Fund - Class A | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A (including sales charges) | |||
| Average Annual Return, Percent | 11.76% | 0.07% | 1.78% | |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Advisor Class | |||
| Average Annual Return, Percent | 15.46% | 0.91% | 2.34% | |
| Columbia Strategic New York Municipal Income Fund - Class C | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class C (including sales charges) | |||
| Average Annual Return, Percent | 13.69% | 0.20% | 1.62% | |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Institutional Class | |||
| Average Annual Return, Percent | 15.50% | 0.90% | 2.33% | |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Institutional 2 Class | |||
| Average Annual Return, Percent | 15.49% | 0.92% | 2.36% | |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Institutional 3 Class | |||
| Average Annual Return, Percent | [1] | 15.57% | 0.98% | 2.33% |
| Without Sales Load [Member] | Columbia Strategic New York Municipal Income Fund - Class A | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A (excluding sales charges) | |||
| Average Annual Return, Percent | 15.19% | 0.67% | 2.09% | |
| Without Sales Load [Member] | Columbia Strategic New York Municipal Income Fund - Class C | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class C (excluding sales charges) | |||
| Average Annual Return, Percent | 14.69% | 0.20% | 1.62% | |
| Bloomberg Municipal Bond Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||
| Average Annual Return, Percent | 9.70% | 1.05% | 2.30% | |
| Bloomberg New York Municipal Bond Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Bloomberg New York Municipal Bond Index | |||
| Average Annual Return, Percent | 10.03% | 1% | 2.18% | |
| [1]The returns shown for periods prior to March 1, 2017 (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of Class A. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit columbiathreadneedleus.com/investor/investment-products/mutual-funds/appended-performance for more information. | ||||
| Shareholder Report, Holdings (Details) | Oct. 31, 2024 |
| Columbia Strategic New York Municipal Income Fund - Class A | New York City Municipal Water Finance Authority 06/15/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Strategic New York Municipal Income Fund - Class A | City of New York 04/01/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Class A | Triborough Bridge & Tunnel Authority 05/15/2064 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Class A | New York Transportation Development Corp. 06/30/2060 5.375% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Class A | TSASC, Inc. 06/01/2041 5.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Class A | New York State Dormitory Authority 03/15/2054 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Class A | City of New York 09/01/2046 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Class A | New York City Transitional Finance Authority 08/01/2048 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Class A | Puerto Rico Sales Tax Financing Corp. 07/01/2046 0.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Class A | Triborough Bridge & Tunnel Authority 05/15/2062 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| Columbia Strategic New York Municipal Income Fund - Class A | AAA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Columbia Strategic New York Municipal Income Fund - Class A | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.30% |
| Columbia Strategic New York Municipal Income Fund - Class A | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| Columbia Strategic New York Municipal Income Fund - Class A | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| Columbia Strategic New York Municipal Income Fund - Class A | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Columbia Strategic New York Municipal Income Fund - Class A | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Class A | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Columbia Strategic New York Municipal Income Fund - Class A | Municipal Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 92.90% |
| Columbia Strategic New York Municipal Income Fund - Class A | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | New York City Municipal Water Finance Authority 06/15/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | City of New York 04/01/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | Triborough Bridge & Tunnel Authority 05/15/2064 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | New York Transportation Development Corp. 06/30/2060 5.375% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | TSASC, Inc. 06/01/2041 5.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | New York State Dormitory Authority 03/15/2054 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | City of New York 09/01/2046 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | New York City Transitional Finance Authority 08/01/2048 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | Puerto Rico Sales Tax Financing Corp. 07/01/2046 0.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | Triborough Bridge & Tunnel Authority 05/15/2062 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | AAA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.30% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | Municipal Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 92.90% |
| Columbia Strategic New York Municipal Income Fund - Advisor Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| Columbia Strategic New York Municipal Income Fund - Class C | New York City Municipal Water Finance Authority 06/15/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Strategic New York Municipal Income Fund - Class C | City of New York 04/01/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Class C | Triborough Bridge & Tunnel Authority 05/15/2064 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Class C | New York Transportation Development Corp. 06/30/2060 5.375% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Class C | TSASC, Inc. 06/01/2041 5.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Class C | New York State Dormitory Authority 03/15/2054 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Class C | City of New York 09/01/2046 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Class C | New York City Transitional Finance Authority 08/01/2048 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Class C | Puerto Rico Sales Tax Financing Corp. 07/01/2046 0.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Class C | Triborough Bridge & Tunnel Authority 05/15/2062 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| Columbia Strategic New York Municipal Income Fund - Class C | AAA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Columbia Strategic New York Municipal Income Fund - Class C | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.30% |
| Columbia Strategic New York Municipal Income Fund - Class C | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| Columbia Strategic New York Municipal Income Fund - Class C | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| Columbia Strategic New York Municipal Income Fund - Class C | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Columbia Strategic New York Municipal Income Fund - Class C | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Class C | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Columbia Strategic New York Municipal Income Fund - Class C | Municipal Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 92.90% |
| Columbia Strategic New York Municipal Income Fund - Class C | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | New York City Municipal Water Finance Authority 06/15/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | City of New York 04/01/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | Triborough Bridge & Tunnel Authority 05/15/2064 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | New York Transportation Development Corp. 06/30/2060 5.375% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | TSASC, Inc. 06/01/2041 5.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | New York State Dormitory Authority 03/15/2054 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | City of New York 09/01/2046 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | New York City Transitional Finance Authority 08/01/2048 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | Puerto Rico Sales Tax Financing Corp. 07/01/2046 0.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | Triborough Bridge & Tunnel Authority 05/15/2062 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | AAA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | Municipal Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 92.90% |
| Columbia Strategic New York Municipal Income Fund - Institutional Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | New York City Municipal Water Finance Authority 06/15/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | City of New York 04/01/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | Triborough Bridge & Tunnel Authority 05/15/2064 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | New York Transportation Development Corp. 06/30/2060 5.375% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | TSASC, Inc. 06/01/2041 5.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | New York State Dormitory Authority 03/15/2054 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | City of New York 09/01/2046 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | New York City Transitional Finance Authority 08/01/2048 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | Puerto Rico Sales Tax Financing Corp. 07/01/2046 0.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | Triborough Bridge & Tunnel Authority 05/15/2062 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | AAA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | Municipal Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 92.90% |
| Columbia Strategic New York Municipal Income Fund - Institutional 2 Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | New York City Municipal Water Finance Authority 06/15/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | City of New York 04/01/2054 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | Triborough Bridge & Tunnel Authority 05/15/2064 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | New York Transportation Development Corp. 06/30/2060 5.375% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | TSASC, Inc. 06/01/2041 5.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | New York State Dormitory Authority 03/15/2054 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | City of New York 09/01/2046 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | New York City Transitional Finance Authority 08/01/2048 4.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | Puerto Rico Sales Tax Financing Corp. 07/01/2046 0.000% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | Triborough Bridge & Tunnel Authority 05/15/2062 5.250% | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | AAA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.30% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.80% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | Municipal Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 92.90% |
| Columbia Strategic New York Municipal Income Fund - Institutional 3 Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
