| Form N-CSR Cover | 6 Months Ended |
| Oct. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Columbia Funds Series Trust I |
| Entity Central Index Key | 0000773757 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Oct. 31, 2024 |
| Shareholder Report | 6 Months Ended | |
| Oct. 31, 2024 USD ($) Holding | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSRS | |
| Amendment Flag | false | |
| Registrant Name | Columbia Funds Series Trust I | |
| Entity Central Index Key | 0000773757 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Oct. 31, 2024 | |
| Columbia Bond Fund - Class A | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Bond Fund | |
| Class Name | Class A | |
| Trading Symbol | CNDAX | |
| 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 $ 0.74 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 38 | |
| Expense Ratio, Percent | 0.74% | [1] |
| Net Assets | $ 920,550,564 | |
| Holdings Count | Holding | 398 | |
| Investment Company, Portfolio Turnover | 121% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 398 Portfolio turnover for the reporting period 121% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 24% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup Fund 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 daily Top Holdings Uniform Mortgage-Backed Security TBA 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % Asset Categories Credit Quality | |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject daily | |
| Largest Holdings [Text Block] | Top Holdings Uniform Mortgage-Backed Security TBA 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % | |
| Columbia Bond Fund - Advisor Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Bond Fund | |
| Class Name | Advisor Class | |
| Trading Symbol | CNDRX | |
| 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 Advisor Class $ 0.49 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 25 | |
| Expense Ratio, Percent | 0.49% | [1] |
| Net Assets | $ 920,550,564 | |
| Holdings Count | Holding | 398 | |
| Investment Company, Portfolio Turnover | 121% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 398 Portfolio turnover for the reporting period 121% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 24% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup Fund's 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 Top Holdings Uniform Mortgage-Backed Security TBA 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % Asset Categories Credit Quality | |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including | |
| Largest Holdings [Text Block] | Top Holdings Uniform Mortgage-Backed Security TBA 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % | |
| Columbia Bond Fund - Institutional Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Bond Fund | |
| Class Name | Institutional Class | |
| Trading Symbol | UMMGX | |
| 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 $ 0.50 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.50% | [1] |
| Net Assets | $ 920,550,564 | |
| Holdings Count | Holding | 398 | |
| Investment Company, Portfolio Turnover | 121% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 398 Portfolio turnover for the reporting period 121% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 24% | |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a percentage net 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 Top Holdings Uniform Mortgage-Backed Security TBA 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % Asset Categories Credit Quality | |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same | |
| Largest Holdings [Text Block] | Top Holdings Uniform Mortgage-Backed Security TBA 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % | |
| Columbia Bond Fund - Institutional 2 Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Bond Fund | |
| Class Name | Institutional 2 Class | |
| Trading Symbol | CNFRX | |
| 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 in vestm Institutional 2 Class $ 0.44 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 23 | |
| Expense Ratio, Percent | 0.44% | [1] |
| Net Assets | $ 920,550,564 | |
| Holdings Count | Holding | 398 | |
| Investment Company, Portfolio Turnover | 121% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 398 Portfolio turnover for the reporting period 121% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 24% | |
| 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 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 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % Asset Categories Credit Quality | |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. | |
| Largest Holdings [Text Block] | Top Holdings Uniform Mortgage-Backed Security TBA 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % | |
| Columbia Bond Fund - Institutional 3 Class | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Bond Fund | |
| Class Name | Institutional 3 Class | |
| Trading Symbol | CBFYX | |
| 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 information 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 $ 0.40 % (a) (a) Annualized. | |
| Expenses Paid, Amount | $ 21 | |
| Expense Ratio, Percent | 0.40% | [1] |
| Net Assets | $ 920,550,564 | |
| Holdings Count | Holding | 398 | |
| Investment Company, Portfolio Turnover | 121% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 398 Portfolio turnover for the reporting period 121% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 24% | |
| 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 Top Holdings Uniform Mortgage-Backed Security TBA 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % Asset Categories Credit Quality | |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject | |
| Largest Holdings [Text Block] | Top Holdings Uniform Mortgage-Backed Security TBA 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % | |
| Columbia Bond Fund - Class S | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Columbia Bond Fund | |
| Class Name | Class S | |
| Trading Symbol | UMMDX | |
| 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) 0.51 % (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 | $ 4 | [2] |
| Expense Ratio, Percent | 0.51% | [1] |
| Net Assets | $ 920,550,564 | |
| Holdings Count | Holding | 398 | |
| Investment Company, Portfolio Turnover | 121% | |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 398 Portfolio turnover for the reporting period 121% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 24% | |
| 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 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % Asset Categories Credit Quality | |
| Credit Quality Explanation [Text Block] | Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily. | |
| Largest Holdings [Text Block] | Top Holdings Uniform Mortgage-Backed Security TBA 3.6 % Uniform Mortgage-Backed Security TBA 3.2 % Uniform Mortgage-Backed Security TBA 3.0 % Uniform Mortgage-Backed Security TBA 1.8 % Federal National Mortgage Association 1.8 % Federal National Mortgage Association 1.4 % Federal Home Loan Mortgage Corp. 1.3 % Federal Home Loan Mortgage Corp. 1.3 % RR 1 LLC 1.1 % AbbVie, Inc. 1.1 % | |
| [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) | Oct. 31, 2024 |
| Columbia Bond Fund - Class A | Uniform Mortgage-Backed Security TBA 11/14/2054 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| Columbia Bond Fund - Class A | Uniform Mortgage-Backed Security TBA 11/14/2054 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Columbia Bond Fund - Class A | Uniform Mortgage-Backed Security TBA 11/14/2054 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Columbia Bond Fund - Class A | Uniform Mortgage-Backed Security TBA 11/14/2054 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Class A | Federal National Mortgage Association 08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Class A | Federal National Mortgage Association 09/01/2053 5.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Bond Fund - Class A | Federal Home Loan Mortgage Corp.09/01/2051 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Class A | Federal Home Loan Mortgage Corp.08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Class A | RR 1 LLC 07/15/2035 6.518% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Class A | AbbVie, Inc. 03/15/2029 4.800% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Class A | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 73.60% |
| Columbia Bond Fund - Class A | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17% |
| Columbia Bond Fund - Class A | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.40% |
| Columbia Bond Fund - Class A | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Columbia Bond Fund - Class A | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Columbia Bond Fund - Class A | Residential Mortgage-Backed Securities - Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37% |
| Columbia Bond Fund - Class A | Asset-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.30% |
| Columbia Bond Fund - Class A | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Class A | Residential Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Class A | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| Columbia Bond Fund - Class A | Commercial Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Columbia Bond Fund - Class A | U.S. Treasury Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Columbia Bond Fund - Class A | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Columbia Bond Fund - Advisor Class | Uniform Mortgage-Backed Security TBA 11/14/2054 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| Columbia Bond Fund - Advisor Class | Uniform Mortgage-Backed Security TBA 11/14/2054 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Columbia Bond Fund - Advisor Class | Uniform Mortgage-Backed Security TBA 11/14/2054 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Columbia Bond Fund - Advisor Class | Uniform Mortgage-Backed Security TBA 11/14/2054 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Advisor Class | Federal National Mortgage Association 08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Advisor Class | Federal National Mortgage Association 09/01/2053 5.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Bond Fund - Advisor Class | Federal Home Loan Mortgage Corp.09/01/2051 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Advisor Class | Federal Home Loan Mortgage Corp.08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Advisor Class | RR 1 LLC 07/15/2035 6.518% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Advisor Class | AbbVie, Inc. 03/15/2029 4.800% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Advisor Class | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 73.60% |
| Columbia Bond Fund - Advisor Class | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17% |
| Columbia Bond Fund - Advisor Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.40% |
| Columbia Bond Fund - Advisor Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Columbia Bond Fund - Advisor Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Columbia Bond Fund - Advisor Class | Residential Mortgage-Backed Securities - Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37% |
| Columbia Bond Fund - Advisor Class | Asset-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.30% |
| Columbia Bond Fund - Advisor Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Advisor Class | Residential Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Advisor Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| Columbia Bond Fund - Advisor Class | Commercial Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Columbia Bond Fund - Advisor Class | U.S. Treasury Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Columbia Bond Fund - Advisor Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Columbia Bond Fund - Institutional Class | Uniform Mortgage-Backed Security TBA 11/14/2054 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| Columbia Bond Fund - Institutional Class | Uniform Mortgage-Backed Security TBA 11/14/2054 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Columbia Bond Fund - Institutional Class | Uniform Mortgage-Backed Security TBA 11/14/2054 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Columbia Bond Fund - Institutional Class | Uniform Mortgage-Backed Security TBA 11/14/2054 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Institutional Class | Federal National Mortgage Association 08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Institutional Class | Federal National Mortgage Association 09/01/2053 5.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Bond Fund - Institutional Class | Federal Home Loan Mortgage Corp.09/01/2051 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Institutional Class | Federal Home Loan Mortgage Corp.08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Institutional Class | RR 1 LLC 07/15/2035 6.518% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Institutional Class | AbbVie, Inc. 03/15/2029 4.800% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Institutional Class | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 73.60% |
| Columbia Bond Fund - Institutional Class | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17% |
| Columbia Bond Fund - Institutional Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.40% |
| Columbia Bond Fund - Institutional Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Columbia Bond Fund - Institutional Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Columbia Bond Fund - Institutional Class | Residential Mortgage-Backed Securities - Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37% |
| Columbia Bond Fund - Institutional Class | Asset-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.30% |
| Columbia Bond Fund - Institutional Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Institutional Class | Residential Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Institutional Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| Columbia Bond Fund - Institutional Class | Commercial Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Columbia Bond Fund - Institutional Class | U.S. Treasury Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Columbia Bond Fund - Institutional Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Columbia Bond Fund - Institutional 2 Class | Uniform Mortgage-Backed Security TBA 11/14/2054 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| Columbia Bond Fund - Institutional 2 Class | Uniform Mortgage-Backed Security TBA 11/14/2054 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Columbia Bond Fund - Institutional 2 Class | Uniform Mortgage-Backed Security TBA 11/14/2054 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Columbia Bond Fund - Institutional 2 Class | Uniform Mortgage-Backed Security TBA 11/14/2054 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Institutional 2 Class | Federal National Mortgage Association 08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Institutional 2 Class | Federal National Mortgage Association 09/01/2053 5.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Bond Fund - Institutional 2 Class | Federal Home Loan Mortgage Corp.09/01/2051 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Institutional 2 Class | Federal Home Loan Mortgage Corp.08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Institutional 2 Class | RR 1 LLC 07/15/2035 6.518% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Institutional 2 Class | AbbVie, Inc. 03/15/2029 4.800% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Institutional 2 Class | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 73.60% |
| Columbia Bond Fund - Institutional 2 Class | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17% |
| Columbia Bond Fund - Institutional 2 Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.40% |
| Columbia Bond Fund - Institutional 2 Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Columbia Bond Fund - Institutional 2 Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Columbia Bond Fund - Institutional 2 Class | Residential Mortgage-Backed Securities - Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37% |
| Columbia Bond Fund - Institutional 2 Class | Asset-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.30% |
| Columbia Bond Fund - Institutional 2 Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Institutional 2 Class | Residential Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Institutional 2 Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| Columbia Bond Fund - Institutional 2 Class | Commercial Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Columbia Bond Fund - Institutional 2 Class | U.S. Treasury Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Columbia Bond Fund - Institutional 2 Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Columbia Bond Fund - Institutional 3 Class | Uniform Mortgage-Backed Security TBA 11/14/2054 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| Columbia Bond Fund - Institutional 3 Class | Uniform Mortgage-Backed Security TBA 11/14/2054 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Columbia Bond Fund - Institutional 3 Class | Uniform Mortgage-Backed Security TBA 11/14/2054 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Columbia Bond Fund - Institutional 3 Class | Uniform Mortgage-Backed Security TBA 11/14/2054 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Institutional 3 Class | Federal National Mortgage Association 08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Institutional 3 Class | Federal National Mortgage Association 09/01/2053 5.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Bond Fund - Institutional 3 Class | Federal Home Loan Mortgage Corp.09/01/2051 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Institutional 3 Class | Federal Home Loan Mortgage Corp.08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Institutional 3 Class | RR 1 LLC 07/15/2035 6.518% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Institutional 3 Class | AbbVie, Inc. 03/15/2029 4.800% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Institutional 3 Class | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 73.60% |
| Columbia Bond Fund - Institutional 3 Class | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17% |
| Columbia Bond Fund - Institutional 3 Class | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.40% |
| Columbia Bond Fund - Institutional 3 Class | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Columbia Bond Fund - Institutional 3 Class | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Columbia Bond Fund - Institutional 3 Class | Residential Mortgage-Backed Securities - Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37% |
| Columbia Bond Fund - Institutional 3 Class | Asset-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.30% |
| Columbia Bond Fund - Institutional 3 Class | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Institutional 3 Class | Residential Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Institutional 3 Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| Columbia Bond Fund - Institutional 3 Class | Commercial Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Columbia Bond Fund - Institutional 3 Class | U.S. Treasury Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Columbia Bond Fund - Institutional 3 Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Columbia Bond Fund - Class S | Uniform Mortgage-Backed Security TBA 11/14/2054 3.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| Columbia Bond Fund - Class S | Uniform Mortgage-Backed Security TBA 11/14/2054 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Columbia Bond Fund - Class S | Uniform Mortgage-Backed Security TBA 11/14/2054 6.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Columbia Bond Fund - Class S | Uniform Mortgage-Backed Security TBA 11/14/2054 4.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Class S | Federal National Mortgage Association 08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Columbia Bond Fund - Class S | Federal National Mortgage Association 09/01/2053 5.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Columbia Bond Fund - Class S | Federal Home Loan Mortgage Corp.09/01/2051 2.500% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Class S | Federal Home Loan Mortgage Corp.08/01/2052 4.000% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Bond Fund - Class S | RR 1 LLC 07/15/2035 6.518% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Class S | AbbVie, Inc. 03/15/2029 4.800% [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Bond Fund - Class S | AA rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 73.60% |
| Columbia Bond Fund - Class S | A rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17% |
| Columbia Bond Fund - Class S | BBB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.40% |
| Columbia Bond Fund - Class S | BB rating [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Columbia Bond Fund - Class S | Not rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Columbia Bond Fund - Class S | Residential Mortgage-Backed Securities - Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37% |
| Columbia Bond Fund - Class S | Asset-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 23.30% |
| Columbia Bond Fund - Class S | Corporate Bonds & Notes [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Class S | Residential Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.50% |
| Columbia Bond Fund - Class S | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.80% |
| Columbia Bond Fund - Class S | Commercial Mortgage-Backed Securities - Non-Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Columbia Bond Fund - Class S | U.S. Treasury Obligations [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Columbia Bond Fund - Class S | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
