| Form N-CSR Cover | 6 Months Ended |
| Nov. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Columbia Funds Series Trust II |
| Entity Central Index Key | 0001352280 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Nov. 30, 2024 |
| Shareholder Report | 6 Months Ended | |
| Nov. 30, 2024 USD ($) Holding | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSRS | |
| Amendment Flag | false | |
| Registrant Name | Columbia Funds Series Trust II | |
| Entity Central Index Key | 0001352280 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Nov. 30, 2024 | |
| Columbia Flexible Capital Income Fund - Class A | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Flexible Capital Income Fund | |
| Class Name | Class A | |
| Trading Symbol | CFIAX | |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Class A $ 0.99 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 52 | |
| Expense Ratio, Percent | 0.99% | [1] |
| Net Assets | $ 1,280,736,251 | |
| Holdings Count | Holding | 176 | |
| Investment Company, Portfolio Turnover | 21% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 176 Portfolio turnover for the reporting period 21% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the subject Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % Asset Categories | |
| Largest Holdings [Text Block] | Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % | |
| Columbia Flexible Capital Income Fund - Class C | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Flexible Capital Income Fund | |
| Class Name | Class C | |
| Trading Symbol | CFIGX | |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Class C $ 1.73 % (a) (a) Annualized | |
| Expenses Paid, Amount | $ 91 | |
| Expense Ratio, Percent | 1.73% | [1] |
| Net Assets | $ 1,280,736,251 | |
| Holdings Count | Holding | 176 | |
| Investment Company, Portfolio Turnover | 21% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 176 Portfolio turnover for the reporting period 21% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as percentage subject Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % Asset Categories | |
| Largest Holdings [Text Block] | Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % | |
| Columbia Flexible Capital Income Fund - Institutional Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Flexible Capital Income Fund | |
| Class Name | Institutional Class | |
| Trading Symbol | CFIZX | |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Institutional Class $ 0.74 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 39 | |
| Expense Ratio, Percent | 0.74% | [1] |
| Net Assets | $ 1,280,736,251 | |
| Holdings Count | Holding | 176 | |
| Investment Company, Portfolio Turnover | 21% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 176 Portfolio turnover for the reporting period 21% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a otherwise composition Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % Asset Categories | |
| Largest Holdings [Text Block] | Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % | |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Flexible Capital Income Fund | |
| Class Name | Institutional 2 Class | |
| Trading Symbol | CFXRX | |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Institutional 2 Class $ 0.71 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 37 | |
| Expense Ratio, Percent | 0.71% | [1] |
| Net Assets | $ 1,280,736,251 | |
| Holdings Count | Holding | 176 | |
| Investment Company, Portfolio Turnover | 21% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 176 Portfolio turnover for the reporting period 21% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % Asset Categories | |
| Largest Holdings [Text Block] | Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % | |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Flexible Capital Income Fund | |
| Class Name | Institutional 3 Class | |
| Trading Symbol | CFCYX | |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Institutional 3 Class $ 0.67 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 35 | |
| Expense Ratio, Percent | 0.67% | [1] |
| Net Assets | $ 1,280,736,251 | |
| Holdings Count | Holding | 176 | |
| Investment Company, Portfolio Turnover | 21% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 176 Portfolio turnover for the reporting period 21% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % Asset Categories | |
| Largest Holdings [Text Block] | Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % | |
| Columbia Flexible Capital Income Fund - Class S | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Flexible Capital Income Fund | |
| Class Name | Class S | |
| Trading Symbol | CFILX | |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 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) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Class S $ (a) 0.78 % (b) (a) Based on operations from October 2, 2024 (commencement of operations) through the stated period end. Had the class been open for the entire reporting period, expenses shown in the table above would have been higher. (b) Annualized. | |
| Expenses Paid, Amount | $ 12 | [2] |
| Expense Ratio, Percent | 0.78% | [1] |
| Net Assets | $ 1,280,736,251 | |
| Holdings Count | Holding | 176 | |
| Investment Company, Portfolio Turnover | 21% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net $ Total number of portfolio holdings 176 Portfolio turnover for the reporting period 21% | |
| 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. Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % Asset Categories | |
| Largest Holdings [Text Block] | Top Holdings Exxon Mobil Corp. 1.4 % U.S. Bancorp 1.1 % AbbVie, Inc. 1.1 % M&T Bank Corp. 1.0 % Merck & Co., Inc. 1.0 % Corning, Inc. 1.0 % Ares Capital Corp. 1.0 % Amgen, Inc. 1.0 % Hilcorp Energy I LP/Finance Co. 1.0 % Philip Morris International, Inc. 1.0 % | |
| [1]Annualized.[2]Based on operations from October 2, 2024 (commencement of operations) through the stated period end. Had the class been open for the entire reporting period, expenses shown in the table above would have been higher. | ||
| Shareholder Report, Holdings (Details) | Nov. 30, 2024 |
| Columbia Flexible Capital Income Fund - Class A | Exxon Mobil Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Flexible Capital Income Fund - Class A | U.S. Bancorp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Class A | AbbVie, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Class A | M&T Bank Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class A | Merck & Co., Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class A | Corning, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class A | Ares Capital Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class A | Amgen, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class A | Hilcorp Energy I LP/Finance Co.04/15/2030 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class A | Philip Morris International, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class A | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40.20% |
| Columbia Flexible Capital Income Fund - Class A | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.40% |
| Columbia Flexible Capital Income Fund - Class A | Convertible Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| Columbia Flexible Capital Income Fund - Class A | Convertible Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| Columbia Flexible Capital Income Fund - Class A | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| Columbia Flexible Capital Income Fund - Class C | Exxon Mobil Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Flexible Capital Income Fund - Class C | U.S. Bancorp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Class C | AbbVie, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Class C | M&T Bank Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class C | Merck & Co., Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class C | Corning, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class C | Ares Capital Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class C | Amgen, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class C | Hilcorp Energy I LP/Finance Co.04/15/2030 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class C | Philip Morris International, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class C | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40.20% |
| Columbia Flexible Capital Income Fund - Class C | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.40% |
| Columbia Flexible Capital Income Fund - Class C | Convertible Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| Columbia Flexible Capital Income Fund - Class C | Convertible Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| Columbia Flexible Capital Income Fund - Class C | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| Columbia Flexible Capital Income Fund - Institutional Class | Exxon Mobil Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Flexible Capital Income Fund - Institutional Class | U.S. Bancorp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Institutional Class | AbbVie, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Institutional Class | M&T Bank Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional Class | Merck & Co., Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional Class | Corning, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional Class | Ares Capital Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional Class | Amgen, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional Class | Hilcorp Energy I LP/Finance Co.04/15/2030 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional Class | Philip Morris International, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional Class | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40.20% |
| Columbia Flexible Capital Income Fund - Institutional Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.40% |
| Columbia Flexible Capital Income Fund - Institutional Class | Convertible Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| Columbia Flexible Capital Income Fund - Institutional Class | Convertible Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| Columbia Flexible Capital Income Fund - Institutional Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Exxon Mobil Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | U.S. Bancorp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | AbbVie, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | M&T Bank Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Merck & Co., Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Corning, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Ares Capital Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Amgen, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Hilcorp Energy I LP/Finance Co.04/15/2030 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Philip Morris International, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40.20% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.40% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Convertible Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Convertible Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| Columbia Flexible Capital Income Fund - Institutional 2 Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Exxon Mobil Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | U.S. Bancorp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | AbbVie, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | M&T Bank Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Merck & Co., Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Corning, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Ares Capital Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Amgen, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Hilcorp Energy I LP/Finance Co.04/15/2030 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Philip Morris International, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40.20% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.40% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Convertible Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Convertible Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| Columbia Flexible Capital Income Fund - Institutional 3 Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| Columbia Flexible Capital Income Fund - Class S | Exxon Mobil Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Flexible Capital Income Fund - Class S | U.S. Bancorp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Class S | AbbVie, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Flexible Capital Income Fund - Class S | M&T Bank Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class S | Merck & Co., Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class S | Corning, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class S | Ares Capital Corp. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class S | Amgen, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class S | Hilcorp Energy I LP/Finance Co.04/15/2030 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class S | Philip Morris International, Inc. [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Flexible Capital Income Fund - Class S | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 40.20% |
| Columbia Flexible Capital Income Fund - Class S | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.40% |
| Columbia Flexible Capital Income Fund - Class S | Convertible Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| Columbia Flexible Capital Income Fund - Class S | Convertible Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| Columbia Flexible Capital Income Fund - Class S | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
