| 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 High Yield Bond Fund - Class A | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia High Yield Bond Fund | |
| Class Name | Class A | |
| Trading Symbol | INEAX | |
| 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 $ 0.97 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 50 | |
| Expense Ratio, Percent | 0.97% | [1] |
| Net Assets | $ 1,387,201,105 | |
| Holdings Count | Holding | 434 | |
| Investment Company, Portfolio Turnover | 19% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 434 Portfolio turnover for the reporting period 19% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the as assets Derivatives Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % | |
| Columbia High Yield Bond Fund - Class C | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia High Yield Bond Fund | |
| Class Name | Class C | |
| Trading Symbol | APECX | |
| 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 $ 1.72 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 88 | |
| Expense Ratio, Percent | 1.72% | [1] |
| Net Assets | $ 1,387,201,105 | |
| Holdings Count | Holding | 434 | |
| Investment Company, Portfolio Turnover | 19% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 434 Portfolio turnover for the reporting period 19% | |
| 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % | |
| Columbia High Yield Bond Fund - Institutional Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia High Yield Bond Fund | |
| Class Name | Institutional Class | |
| Trading Symbol | CHYZX | |
| 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 $ 0.72 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 37 | |
| Expense Ratio, Percent | 0.72% | [1] |
| Net Assets | $ 1,387,201,105 | |
| Holdings Count | Holding | 434 | |
| Investment Company, Portfolio Turnover | 19% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 434 Portfolio turnover for the reporting period 19% | |
| 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % | |
| Columbia High Yield Bond Fund - Institutional 2 Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia High Yield Bond Fund | |
| Class Name | Institutional 2 Class | |
| Trading Symbol | RSHRX | |
| 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 $ 0.65 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 33 | |
| Expense Ratio, Percent | 0.65% | [1] |
| Net Assets | $ 1,387,201,105 | |
| Holdings Count | Holding | 434 | |
| Investment Company, Portfolio Turnover | 19% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 434 Portfolio turnover for the reporting period 19% | |
| 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % | |
| Columbia High Yield Bond Fund - Institutional 3 Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia High Yield Bond Fund | |
| Class Name | Institutional 3 Class | |
| Trading Symbol | CHYYX | |
| 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 $ 0.60 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 31 | |
| Expense Ratio, Percent | 0.60% | [1] |
| Net Assets | $ 1,387,201,105 | |
| Holdings Count | Holding | 434 | |
| Investment Company, Portfolio Turnover | 19% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 434 Portfolio turnover for the reporting period 19% | |
| 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 o daily Top Holdings HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 o daily | |
| Largest Holdings [Text Block] | Top Holdings HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % | |
| Columbia High Yield Bond Fund - Class R | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia High Yield Bond Fund | |
| Class Name | Class R | |
| Trading Symbol | CHBRX | |
| 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 R $ 1.22 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 63 | |
| Expense Ratio, Percent | 1.22% | [1] |
| Net Assets | $ 1,387,201,105 | |
| Holdings Count | Holding | 434 | |
| Investment Company, Portfolio Turnover | 19% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 434 Portfolio turnover for the reporting period 19% | |
| 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % | |
| Columbia High Yield Bond Fund - Class S | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia High Yield Bond Fund | |
| Class Name | Class S | |
| Trading Symbol | CHYEX | |
| 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) 0.72 % (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 | $ 11 | [2] |
| Expense Ratio, Percent | 0.72% | [1] |
| Net Assets | $ 1,387,201,105 | |
| Holdings Count | Holding | 434 | |
| Investment Company, Portfolio Turnover | 19% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 434 Portfolio turnover for the reporting period 19% | |
| Holdings [Text Block] | Graphical Representation of Fund Holdings 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % 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 average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. 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 HUB International, Ltd. 1.0 % Alliant Holdings Intermediate LLC/Co-Issuer 0.9 % NextEra Energy Partners LP 0.8 % CCO Holdings LLC/Capital Corp. 0.8 % H&E Equipment Services, Inc. 0.7 % Mozart Debt Merger Sub, Inc. 0.7 % Colgate Energy Partners III LLC 0.7 % Rocket Mortgage LLC/Co-Issuer, Inc. 0.6 % American Airlines, Inc./AAdvantage Loyalty IP Ltd. 0.6 % CSC Holdings LLC 0.6 % | |
| [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 High Yield Bond Fund - Class A | HUB International, Ltd. 06/15/2030 7.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class A | Alliant Holdings Intermediate LLC/Co-Issuer 10/15/2027 6.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Columbia High Yield Bond Fund - Class A | NextEra Energy Partners LP 06/15/2026 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Class A | CCO Holdings LLC/Capital Corp. 03/01/2030 4.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Class A | H&E Equipment Services, Inc. 12/15/2028 3.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class A | Mozart Debt Merger Sub, Inc. 10/01/2029 5.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class A | Colgate Energy Partners III LLC 07/01/2029 5.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class A | Rocket Mortgage LLC/Co-Issuer, Inc. 10/15/2033 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class A | American Airlines, Inc./AAdvantage Loyalty IP Ltd. 04/20/2029 5.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class A | CSC Holdings LLC 02/15/2031 3.375% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class A | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class A | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 48.50% |
| Columbia High Yield Bond Fund - Class A | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33% |
| Columbia High Yield Bond Fund - Class A | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| Columbia High Yield Bond Fund - Class A | CC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class A | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class A | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.10% |
| Columbia High Yield Bond Fund - Class A | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia High Yield Bond Fund - Class A | Senior Loan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Columbia High Yield Bond Fund - Class A | Foreign Government Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class A | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Class C | HUB International, Ltd. 06/15/2030 7.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class C | Alliant Holdings Intermediate LLC/Co-Issuer 10/15/2027 6.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Columbia High Yield Bond Fund - Class C | NextEra Energy Partners LP 06/15/2026 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Class C | CCO Holdings LLC/Capital Corp. 03/01/2030 4.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Class C | H&E Equipment Services, Inc. 12/15/2028 3.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class C | Mozart Debt Merger Sub, Inc. 10/01/2029 5.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class C | Colgate Energy Partners III LLC 07/01/2029 5.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class C | Rocket Mortgage LLC/Co-Issuer, Inc. 10/15/2033 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class C | American Airlines, Inc./AAdvantage Loyalty IP Ltd. 04/20/2029 5.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class C | CSC Holdings LLC 02/15/2031 3.375% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class C | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class C | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 48.50% |
| Columbia High Yield Bond Fund - Class C | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33% |
| Columbia High Yield Bond Fund - Class C | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| Columbia High Yield Bond Fund - Class C | CC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class C | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class C | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.10% |
| Columbia High Yield Bond Fund - Class C | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia High Yield Bond Fund - Class C | Senior Loan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Columbia High Yield Bond Fund - Class C | Foreign Government Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class C | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Institutional Class | HUB International, Ltd. 06/15/2030 7.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional Class | Alliant Holdings Intermediate LLC/Co-Issuer 10/15/2027 6.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Columbia High Yield Bond Fund - Institutional Class | NextEra Energy Partners LP 06/15/2026 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Institutional Class | CCO Holdings LLC/Capital Corp. 03/01/2030 4.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Institutional Class | H&E Equipment Services, Inc. 12/15/2028 3.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional Class | Mozart Debt Merger Sub, Inc. 10/01/2029 5.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional Class | Colgate Energy Partners III LLC 07/01/2029 5.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional Class | Rocket Mortgage LLC/Co-Issuer, Inc. 10/15/2033 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Institutional Class | American Airlines, Inc./AAdvantage Loyalty IP Ltd. 04/20/2029 5.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Institutional Class | CSC Holdings LLC 02/15/2031 3.375% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Institutional Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 48.50% |
| Columbia High Yield Bond Fund - Institutional Class | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33% |
| Columbia High Yield Bond Fund - Institutional Class | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| Columbia High Yield Bond Fund - Institutional Class | CC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.10% |
| Columbia High Yield Bond Fund - Institutional Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia High Yield Bond Fund - Institutional Class | Senior Loan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Columbia High Yield Bond Fund - Institutional Class | Foreign Government Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Institutional 2 Class | HUB International, Ltd. 06/15/2030 7.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional 2 Class | Alliant Holdings Intermediate LLC/Co-Issuer 10/15/2027 6.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Columbia High Yield Bond Fund - Institutional 2 Class | NextEra Energy Partners LP 06/15/2026 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Institutional 2 Class | CCO Holdings LLC/Capital Corp. 03/01/2030 4.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Institutional 2 Class | H&E Equipment Services, Inc. 12/15/2028 3.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional 2 Class | Mozart Debt Merger Sub, Inc. 10/01/2029 5.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional 2 Class | Colgate Energy Partners III LLC 07/01/2029 5.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional 2 Class | Rocket Mortgage LLC/Co-Issuer, Inc. 10/15/2033 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Institutional 2 Class | American Airlines, Inc./AAdvantage Loyalty IP Ltd. 04/20/2029 5.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Institutional 2 Class | CSC Holdings LLC 02/15/2031 3.375% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Institutional 2 Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional 2 Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 48.50% |
| Columbia High Yield Bond Fund - Institutional 2 Class | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33% |
| Columbia High Yield Bond Fund - Institutional 2 Class | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| Columbia High Yield Bond Fund - Institutional 2 Class | CC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional 2 Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional 2 Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.10% |
| Columbia High Yield Bond Fund - Institutional 2 Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia High Yield Bond Fund - Institutional 2 Class | Senior Loan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Columbia High Yield Bond Fund - Institutional 2 Class | Foreign Government Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional 2 Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Institutional 3 Class | HUB International, Ltd. 06/15/2030 7.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional 3 Class | Alliant Holdings Intermediate LLC/Co-Issuer 10/15/2027 6.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Columbia High Yield Bond Fund - Institutional 3 Class | NextEra Energy Partners LP 06/15/2026 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Institutional 3 Class | CCO Holdings LLC/Capital Corp. 03/01/2030 4.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Institutional 3 Class | H&E Equipment Services, Inc. 12/15/2028 3.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional 3 Class | Mozart Debt Merger Sub, Inc. 10/01/2029 5.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional 3 Class | Colgate Energy Partners III LLC 07/01/2029 5.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional 3 Class | Rocket Mortgage LLC/Co-Issuer, Inc. 10/15/2033 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Institutional 3 Class | American Airlines, Inc./AAdvantage Loyalty IP Ltd. 04/20/2029 5.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Institutional 3 Class | CSC Holdings LLC 02/15/2031 3.375% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Institutional 3 Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional 3 Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 48.50% |
| Columbia High Yield Bond Fund - Institutional 3 Class | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33% |
| Columbia High Yield Bond Fund - Institutional 3 Class | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| Columbia High Yield Bond Fund - Institutional 3 Class | CC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Institutional 3 Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional 3 Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.10% |
| Columbia High Yield Bond Fund - Institutional 3 Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia High Yield Bond Fund - Institutional 3 Class | Senior Loan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Columbia High Yield Bond Fund - Institutional 3 Class | Foreign Government Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Institutional 3 Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Class R | HUB International, Ltd. 06/15/2030 7.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class R | Alliant Holdings Intermediate LLC/Co-Issuer 10/15/2027 6.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Columbia High Yield Bond Fund - Class R | NextEra Energy Partners LP 06/15/2026 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Class R | CCO Holdings LLC/Capital Corp. 03/01/2030 4.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Class R | H&E Equipment Services, Inc. 12/15/2028 3.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class R | Mozart Debt Merger Sub, Inc. 10/01/2029 5.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class R | Colgate Energy Partners III LLC 07/01/2029 5.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class R | Rocket Mortgage LLC/Co-Issuer, Inc. 10/15/2033 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class R | American Airlines, Inc./AAdvantage Loyalty IP Ltd. 04/20/2029 5.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class R | CSC Holdings LLC 02/15/2031 3.375% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class R | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class R | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 48.50% |
| Columbia High Yield Bond Fund - Class R | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33% |
| Columbia High Yield Bond Fund - Class R | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| Columbia High Yield Bond Fund - Class R | CC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class R | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class R | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.10% |
| Columbia High Yield Bond Fund - Class R | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia High Yield Bond Fund - Class R | Senior Loan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Columbia High Yield Bond Fund - Class R | Foreign Government Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class R | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Class S | HUB International, Ltd. 06/15/2030 7.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class S | Alliant Holdings Intermediate LLC/Co-Issuer 10/15/2027 6.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Columbia High Yield Bond Fund - Class S | NextEra Energy Partners LP 06/15/2026 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Class S | CCO Holdings LLC/Capital Corp. 03/01/2030 4.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Columbia High Yield Bond Fund - Class S | H&E Equipment Services, Inc. 12/15/2028 3.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class S | Mozart Debt Merger Sub, Inc. 10/01/2029 5.250% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class S | Colgate Energy Partners III LLC 07/01/2029 5.875% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class S | Rocket Mortgage LLC/Co-Issuer, Inc. 10/15/2033 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class S | American Airlines, Inc./AAdvantage Loyalty IP Ltd. 04/20/2029 5.750% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class S | CSC Holdings LLC 02/15/2031 3.375% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia High Yield Bond Fund - Class S | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class S | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 48.50% |
| Columbia High Yield Bond Fund - Class S | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33% |
| Columbia High Yield Bond Fund - Class S | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.10% |
| Columbia High Yield Bond Fund - Class S | CC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia High Yield Bond Fund - Class S | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class S | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.10% |
| Columbia High Yield Bond Fund - Class S | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia High Yield Bond Fund - Class S | Senior Loan [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Columbia High Yield Bond Fund - Class S | Foreign Government Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia High Yield Bond Fund - Class S | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
