| 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 Quality Income Fund - Class A | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Quality Income Fund | |
| Class Name | Class A | |
| Trading Symbol | AUGAX | |
| 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 $ 0.91 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 47 | |
| Expense Ratio, Percent | 0.91% | [1] |
| Net Assets | $ 1,374,613,932 | |
| Holdings Count | Holding | 334 | |
| Investment Company, Portfolio Turnover | 165% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 334 Portfolio turnover for the reporting period 165% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 6% | |
| 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 Top Holdings Uniform Mortgage-Backed Security TBA 7.8 % Uniform Mortgage-Backed Security TBA 6.6 % Government National Mortgage Association TBA 4.6 % Uniform Mortgage-Backed Security TBA 2.8 % Government National Mortgage Association 2.6 % Uniform Mortgage-Backed Security TBA 2.5 % Federal National Mortgage Association 2.3 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.7 % Federal Home Loan Mortgage Corp. 1.6 % 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 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 | |
| Largest Holdings [Text Block] | Top Holdings Uniform Mortgage-Backed Security TBA 7.8 % Uniform Mortgage-Backed Security TBA 6.6 % Government National Mortgage Association TBA 4.6 % Uniform Mortgage-Backed Security TBA 2.8 % Government National Mortgage Association 2.6 % Uniform Mortgage-Backed Security TBA 2.5 % Federal National Mortgage Association 2.3 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.7 % Federal Home Loan Mortgage Corp. 1.6 % | |
| Columbia Quality Income Fund - Class C | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Quality Income Fund | |
| Class Name | Class C | |
| Trading Symbol | AUGCX | |
| 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 $ 1.66 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 85 | |
| Expense Ratio, Percent | 1.66% | [1] |
| Net Assets | $ 1,374,613,932 | |
| Holdings Count | Holding | 334 | |
| Investment Company, Portfolio Turnover | 165% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 334 Portfolio turnover for the reporting period 165% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 6 | |
| 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 Top Holdings Uniform Mortgage-Backed Security TBA 7.8 % Uniform Mortgage-Backed Security TBA 6.6 % Government National Mortgage Association TBA 4.6 % Uniform Mortgage-Backed Security TBA 2.8 % Government National Mortgage Association 2.6 % Uniform Mortgage-Backed Security TBA 2.5 % Federal National Mortgage Association 2.3 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.7 % Federal Home Loan Mortgage Corp. 1.6 % 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 middle | |
| Largest Holdings [Text Block] | Top Holdings Uniform Mortgage-Backed Security TBA 7.8 % Uniform Mortgage-Backed Security TBA 6.6 % Government National Mortgage Association TBA 4.6 % Uniform Mortgage-Backed Security TBA 2.8 % Government National Mortgage Association 2.6 % Uniform Mortgage-Backed Security TBA 2.5 % Federal National Mortgage Association 2.3 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.7 % Federal Home Loan Mortgage Corp. 1.6 % | |
| Columbia Quality Income Fund - Institutional Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Quality Income Fund | |
| Class Name | Institutional Class | |
| Trading Symbol | CUGZX | |
| 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 $ 0.66 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 34 | |
| Expense Ratio, Percent | 0.66% | [1] |
| Net Assets | $ 1,374,613,932 | |
| Holdings Count | Holding | 334 | |
| Investment Company, Portfolio Turnover | 165% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 334 Portfolio turnover for the reporting period 165% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 6% | |
| 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 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 Uniform Mortgage-Backed Security TBA 7.8 % Uniform Mortgage-Backed Security TBA 6.6 % Government National Mortgage Association TBA 4.6 % Uniform Mortgage-Backed Security TBA 2.8 % Government National Mortgage Association 2.6 % Uniform Mortgage-Backed Security TBA 2.5 % Federal National Mortgage Association 2.3 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.7 % Federal Home Loan Mortgage Corp. 1.6 % 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 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 Uniform Mortgage-Backed Security TBA 7.8 % Uniform Mortgage-Backed Security TBA 6.6 % Government National Mortgage Association TBA 4.6 % Uniform Mortgage-Backed Security TBA 2.8 % Government National Mortgage Association 2.6 % Uniform Mortgage-Backed Security TBA 2.5 % Federal National Mortgage Association 2.3 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.7 % Federal Home Loan Mortgage Corp. 1.6 % | |
| Columbia Quality Income Fund - Institutional 2 Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Quality Income Fund | |
| Class Name | Institutional 2 Class | |
| Trading Symbol | CGVRX | |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report contains important information about Columbia Quality Income Fund (the Fund) for the period of June 1, 2024 to November 30, 2024. | |
| 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 $ 0.57 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 29 | |
| Expense Ratio, Percent | 0.57% | [1] |
| Net Assets | $ 1,374,613,932 | |
| Holdings Count | Holding | 334 | |
| Investment Company, Portfolio Turnover | 165% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 334 Portfolio turnover for the reporting period 165% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 6% | |
| 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 Uniform Mortgage-Backed Security TBA 7.8 % Uniform Mortgage-Backed Security TBA 6.6 % Government National Mortgage Association TBA 4.6 % Uniform Mortgage-Backed Security TBA 2.8 % Government National Mortgage Association 2.6 % Uniform Mortgage-Backed Security TBA 2.5 % Federal National Mortgage Association 2.3 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.7 % Federal Home Loan Mortgage Corp. 1.6 % 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 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 Uniform Mortgage-Backed Security TBA 7.8 % Uniform Mortgage-Backed Security TBA 6.6 % Government National Mortgage Association TBA 4.6 % Uniform Mortgage-Backed Security TBA 2.8 % Government National Mortgage Association 2.6 % Uniform Mortgage-Backed Security TBA 2.5 % Federal National Mortgage Association 2.3 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.7 % Federal Home Loan Mortgage Corp. 1.6 % | |
| Columbia Quality Income Fund - Institutional 3 Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Quality Income Fund | |
| Class Name | Institutional 3 Class | |
| Trading Symbol | CUGYX | |
| 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 $ 0.52 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 27 | |
| Expense Ratio, Percent | 0.52% | [1] |
| Net Assets | $ 1,374,613,932 | |
| Holdings Count | Holding | 334 | |
| Investment Company, Portfolio Turnover | 165% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 334 Portfolio turnover for the reporting period 165% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 6% | |
| 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 Uniform Mortgage-Backed Security TBA 7.8 % Uniform Mortgage-Backed Security TBA 6.6 % Government National Mortgage Association TBA 4.6 % Uniform Mortgage-Backed Security TBA 2.8 % Government National Mortgage Association 2.6 % Uniform Mortgage-Backed Security TBA 2.5 % Federal National Mortgage Association 2.3 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.7 % Federal Home Loan Mortgage Corp. 1.6 % 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 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 Uniform Mortgage-Backed Security TBA 7.8 % Uniform Mortgage-Backed Security TBA 6.6 % Government National Mortgage Association TBA 4.6 % Uniform Mortgage-Backed Security TBA 2.8 % Government National Mortgage Association 2.6 % Uniform Mortgage-Backed Security TBA 2.5 % Federal National Mortgage Association 2.3 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.7 % Federal Home Loan Mortgage Corp. 1.6 % | |
| [1]Annualized. | ||
| Shareholder Report, Holdings (Details) | Nov. 30, 2024 |
| Columbia Quality Income Fund - Class A | Uniform Mortgage-Backed Security TBA 12/13/2053 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| Columbia Quality Income Fund - Class A | Uniform Mortgage-Backed Security TBA 12/12/2054 3.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| Columbia Quality Income Fund - Class A | Government National Mortgage Association TBA 12/20/2053 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Columbia Quality Income Fund - Class A | Uniform Mortgage-Backed Security TBA 12/13/2053 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Columbia Quality Income Fund - Class A | Government National Mortgage Association 05/20/2051 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Quality Income Fund - Class A | Uniform Mortgage-Backed Security TBA 12/17/2039 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Quality Income Fund - Class A | Federal National Mortgage Association 08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Quality Income Fund - Class A | Federal National Mortgage Association 11/01/2052 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Quality Income Fund - Class A | Federal National Mortgage Association 05/01/2051 2.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Columbia Quality Income Fund - Class A | Federal Home Loan Mortgage Corp 08/01/2052 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| Columbia Quality Income Fund - Class A | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 103.40% |
| Columbia Quality Income Fund - Class A | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| Columbia Quality Income Fund - Class A | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Columbia Quality Income Fund - Class A | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Quality Income Fund - Class A | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Columbia Quality Income Fund - Class A | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| Columbia Quality Income Fund - Class A | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Columbia Quality Income Fund - Class A | Residential Mortgage Backed Securities Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.80% |
| Columbia Quality Income Fund - Class A | Residential Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.30% |
| Columbia Quality Income Fund - Class A | Asset Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| Columbia Quality Income Fund - Class A | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| Columbia Quality Income Fund - Class A | Commercial Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Columbia Quality Income Fund - Class A | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Quality Income Fund - Class C | Uniform Mortgage-Backed Security TBA 12/13/2053 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| Columbia Quality Income Fund - Class C | Uniform Mortgage-Backed Security TBA 12/12/2054 3.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| Columbia Quality Income Fund - Class C | Government National Mortgage Association TBA 12/20/2053 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Columbia Quality Income Fund - Class C | Uniform Mortgage-Backed Security TBA 12/13/2053 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Columbia Quality Income Fund - Class C | Government National Mortgage Association 05/20/2051 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Quality Income Fund - Class C | Uniform Mortgage-Backed Security TBA 12/17/2039 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Quality Income Fund - Class C | Federal National Mortgage Association 08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Quality Income Fund - Class C | Federal National Mortgage Association 11/01/2052 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Quality Income Fund - Class C | Federal National Mortgage Association 05/01/2051 2.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Columbia Quality Income Fund - Class C | Federal Home Loan Mortgage Corp 08/01/2052 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| Columbia Quality Income Fund - Class C | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 103.40% |
| Columbia Quality Income Fund - Class C | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| Columbia Quality Income Fund - Class C | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Columbia Quality Income Fund - Class C | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Quality Income Fund - Class C | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Columbia Quality Income Fund - Class C | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| Columbia Quality Income Fund - Class C | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Columbia Quality Income Fund - Class C | Residential Mortgage Backed Securities Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.80% |
| Columbia Quality Income Fund - Class C | Residential Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.30% |
| Columbia Quality Income Fund - Class C | Asset Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| Columbia Quality Income Fund - Class C | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| Columbia Quality Income Fund - Class C | Commercial Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Columbia Quality Income Fund - Class C | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Quality Income Fund - Institutional Class | Uniform Mortgage-Backed Security TBA 12/13/2053 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| Columbia Quality Income Fund - Institutional Class | Uniform Mortgage-Backed Security TBA 12/12/2054 3.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| Columbia Quality Income Fund - Institutional Class | Government National Mortgage Association TBA 12/20/2053 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Columbia Quality Income Fund - Institutional Class | Uniform Mortgage-Backed Security TBA 12/13/2053 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Columbia Quality Income Fund - Institutional Class | Government National Mortgage Association 05/20/2051 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Quality Income Fund - Institutional Class | Uniform Mortgage-Backed Security TBA 12/17/2039 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Quality Income Fund - Institutional Class | Federal National Mortgage Association 08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Quality Income Fund - Institutional Class | Federal National Mortgage Association 11/01/2052 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Quality Income Fund - Institutional Class | Federal National Mortgage Association 05/01/2051 2.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Columbia Quality Income Fund - Institutional Class | Federal Home Loan Mortgage Corp 08/01/2052 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| Columbia Quality Income Fund - Institutional Class | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 103.40% |
| Columbia Quality Income Fund - Institutional Class | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| Columbia Quality Income Fund - Institutional Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Columbia Quality Income Fund - Institutional Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Quality Income Fund - Institutional Class | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Columbia Quality Income Fund - Institutional Class | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| Columbia Quality Income Fund - Institutional Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Columbia Quality Income Fund - Institutional Class | Residential Mortgage Backed Securities Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.80% |
| Columbia Quality Income Fund - Institutional Class | Residential Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.30% |
| Columbia Quality Income Fund - Institutional Class | Asset Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| Columbia Quality Income Fund - Institutional Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| Columbia Quality Income Fund - Institutional Class | Commercial Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Columbia Quality Income Fund - Institutional Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Quality Income Fund - Institutional 2 Class | Uniform Mortgage-Backed Security TBA 12/13/2053 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| Columbia Quality Income Fund - Institutional 2 Class | Uniform Mortgage-Backed Security TBA 12/12/2054 3.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| Columbia Quality Income Fund - Institutional 2 Class | Government National Mortgage Association TBA 12/20/2053 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Columbia Quality Income Fund - Institutional 2 Class | Uniform Mortgage-Backed Security TBA 12/13/2053 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Columbia Quality Income Fund - Institutional 2 Class | Government National Mortgage Association 05/20/2051 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Quality Income Fund - Institutional 2 Class | Uniform Mortgage-Backed Security TBA 12/17/2039 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Quality Income Fund - Institutional 2 Class | Federal National Mortgage Association 08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Quality Income Fund - Institutional 2 Class | Federal National Mortgage Association 11/01/2052 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Quality Income Fund - Institutional 2 Class | Federal National Mortgage Association 05/01/2051 2.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Columbia Quality Income Fund - Institutional 2 Class | Federal Home Loan Mortgage Corp 08/01/2052 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| Columbia Quality Income Fund - Institutional 2 Class | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 103.40% |
| Columbia Quality Income Fund - Institutional 2 Class | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| Columbia Quality Income Fund - Institutional 2 Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Columbia Quality Income Fund - Institutional 2 Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Quality Income Fund - Institutional 2 Class | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Columbia Quality Income Fund - Institutional 2 Class | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| Columbia Quality Income Fund - Institutional 2 Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Columbia Quality Income Fund - Institutional 2 Class | Residential Mortgage Backed Securities Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.80% |
| Columbia Quality Income Fund - Institutional 2 Class | Residential Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.30% |
| Columbia Quality Income Fund - Institutional 2 Class | Asset Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| Columbia Quality Income Fund - Institutional 2 Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| Columbia Quality Income Fund - Institutional 2 Class | Commercial Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Columbia Quality Income Fund - Institutional 2 Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Columbia Quality Income Fund - Institutional 3 Class | Uniform Mortgage-Backed Security TBA 12/13/2053 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| Columbia Quality Income Fund - Institutional 3 Class | Uniform Mortgage-Backed Security TBA 12/12/2054 3.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| Columbia Quality Income Fund - Institutional 3 Class | Government National Mortgage Association TBA 12/20/2053 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Columbia Quality Income Fund - Institutional 3 Class | Uniform Mortgage-Backed Security TBA 12/13/2053 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Columbia Quality Income Fund - Institutional 3 Class | Government National Mortgage Association 05/20/2051 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Columbia Quality Income Fund - Institutional 3 Class | Uniform Mortgage-Backed Security TBA 12/17/2039 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Columbia Quality Income Fund - Institutional 3 Class | Federal National Mortgage Association 08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Columbia Quality Income Fund - Institutional 3 Class | Federal National Mortgage Association 11/01/2052 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Quality Income Fund - Institutional 3 Class | Federal National Mortgage Association 05/01/2051 2.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Columbia Quality Income Fund - Institutional 3 Class | Federal Home Loan Mortgage Corp 08/01/2052 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| Columbia Quality Income Fund - Institutional 3 Class | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 103.40% |
| Columbia Quality Income Fund - Institutional 3 Class | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| Columbia Quality Income Fund - Institutional 3 Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Columbia Quality Income Fund - Institutional 3 Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Quality Income Fund - Institutional 3 Class | B rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Columbia Quality Income Fund - Institutional 3 Class | CCC rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| Columbia Quality Income Fund - Institutional 3 Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| Columbia Quality Income Fund - Institutional 3 Class | Residential Mortgage Backed Securities Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.80% |
| Columbia Quality Income Fund - Institutional 3 Class | Residential Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.30% |
| Columbia Quality Income Fund - Institutional 3 Class | Asset Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| Columbia Quality Income Fund - Institutional 3 Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| Columbia Quality Income Fund - Institutional 3 Class | Commercial Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Columbia Quality Income Fund - Institutional 3 Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
