| Form N-CSR Cover | 12 Months Ended |
| May 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Columbia Funds Series Trust I |
| Entity Central Index Key | 0000773757 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | May 31, 2024 |
| Shareholder Report | 12 Months Ended |
| May 31, 2024 USD ($) Holdings | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Columbia Funds Series Trust I |
| Entity Central Index Key | 0000773757 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | May 31, 2024 |
| Columbia Multi Strategy Alternatives Fund Class A | |
| Shareholder Report [Line Items] | |
| Fund Name | Columbia Multi Strategy Alternatives Fund |
| Class Name | Class A |
| Trading Symbol | CLAAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Columbia Multi Strategy Alternatives Fund (the Fund) for the period of June 1, 2023 to May 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature |
| 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 Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $ 1.33 % |
| Expenses Paid, Amount | $ 140 |
| Expense Ratio, Percent | 1.33% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance Top Performance Contributors Commodity Futures Long/Short sleeve Global macro sleeves Mortgage Opportunities and Global Tactical Asset Allocation sleeves Derivatives usage Top Performance Detractors G10 Currency sleeve |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns (%) 1 year 5 years Since Fund Class A (excluding sales charges) (a) 10.01 0.81 (2.35 ) Class A (including sales charges) (a) 3.67 (0.36 ) (2.97 ) FTSE One-Month U.S. Treasury Bill Index 5.54 2.10 1.53 HFRX Global Hedge Fund Index 5.89 3.46 1.88 Bloomberg Global Aggregate Index 0.77 (1.62 ) 0.00 (a) The Fund’s performance prior to October 2019 reflects returns achieved by the Investment Manager according to different principal investment strategies. If the Fund’s current management and strategies had been in place for the prior periods, results shown may have been different. |
| No Deduction of Taxes [Text Block] | Performance does not reflect the deduction of taxes that a shareholder may pay on fund distributions or on the redemptions of fund shares. |
| Updated Performance Information Location [Text Block] | Visit columbiathreadneedleus.com/investment-products/mutual-funds |
| Net Assets | $ 539,461,587 |
| Holdings Count | Holdings | 1,051 |
| Advisory Fees Paid, Amount | $ 6,146,117 |
| Investment Company, Portfolio Turnover | 718% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 1,051 Management services fees $ Portfolio turnover for the reporting period 718% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 11% |
| Holdings [Text Block] | Graphical Representation of Fund The tables below show the investment makeup of the Fund represented as a percentage of Fund net Derivative Exposure Long Commodity-Related Investment Risk 33.8 % Credit Risk 0.7 % Equity Risk 47.2 % Foreign Exchange Risk 363.4 % Interest Rate Risk 341.0 % Short Commodity-Related Investment Risk 30.8 % Credit Risk 1.1 % Equity Risk 43.4 % Foreign Exchange Risk 361.3 % Interest Rate Risk 378.5 % Asset Categories |
| Columbia Multi Strategy Alternatives Fund Advisor Class | |
| Shareholder Report [Line Items] | |
| Fund Name | Columbia Multi Strategy Alternatives Fund |
| Class Name | Advisor Class |
| Trading Symbol | CLFUX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Columbia Multi Strategy Alternatives Fund (the Fund) for the period of June 1, 2023 to May 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature |
| 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 Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Advisor Class $ 1.08 % |
| Expenses Paid, Amount | $ 114 |
| Expense Ratio, Percent | 1.08% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance Top Performance Contributors Commodity Futures Long/Short sleeve Global macro sleeves Mortgage Opportunities and Global Tactical Asset Allocation sleeves Derivatives usage Top Performance Detractors G10 Currency sleeve |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns (%) 1 year 5 years Since Fund Advisor Class (a) 10.26 1.08 (2.10 ) FTSE One-Month U.S. Treasury Bill Index 5.54 2.10 1.53 HFRX Global Hedge Fund Index 5.89 3.46 1.88 Bloomberg Global Aggregate Index 0.77 (1.62 ) 0.00 (a) The Fund’s performance prior to October 2019 reflects returns achieved by the Investment Manager according to different principal investment strategies. If the Fund’s current management and strategies had been in place for the prior periods, results shown may have been different. |
| No Deduction of Taxes [Text Block] | Performance does not reflect the deduction of taxes that a shareholder may pay on fund distributions or on the redemptions of fund shares. |
| Updated Performance Information Location [Text Block] | Visit columbiathreadneedleus.com/investment-products/mutual-funds |
| Net Assets | $ 539,461,587 |
| Holdings Count | Holdings | 1,051 |
| Advisory Fees Paid, Amount | $ 6,146,117 |
| Investment Company, Portfolio Turnover | 718% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 1,051 Management services fees $ Portfolio turnover for the reporting period 718% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 11% |
| 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 su bj Derivative Exposure Long Commodity-Related Investment Risk 33.8 % Credit Risk 0.7 % Equity Risk 47.2 % Foreign Exchange Risk 363.4 % Interest Rate Risk 341.0 % Short Commodity-Related Investment Risk 30.8 % Credit Risk 1.1 % Equity Risk 43.4 % Foreign Exchange Risk 361.3 % Interest Rate Risk 378.5 % Asset Categories |
| Columbia Multi Strategy Alternatives Fund Class C | |
| Shareholder Report [Line Items] | |
| Fund Name | Columbia Multi Strategy Alternatives Fund |
| Class Name | Class C |
| Trading Symbol | CLABX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Columbia Multi Strategy Alternatives Fund (the Fund) for the period of June 1, 2023 to May 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature |
| 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 Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C $ 2.08 % |
| Expenses Paid, Amount | $ 218 |
| Expense Ratio, Percent | 2.08% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance Top Performance Contributors Commodity Futures Long/Short sleeve Global macro sleeves Mortgage Opportunities and Global Tactical Asset Allocation sleeves Derivatives usage Top Performance Detractors G10 Currency sleeve |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns (%) 1 year 5 years Since Fund Class C (excluding sales charges) (a) 9.18 0.06 (3.07 ) Class C (including sales charges) (a) 8.18 0.06 (3.07 ) FTSE One-Month U.S. Treasury Bill Index 5.54 2.10 1.53 HFRX Global Hedge Fund Index 5.89 3.46 1.88 Bloomberg Global Aggregate Index 0.77 (1.62 ) 0.00 (a) The Fund’s performance prior to October 2019 reflects returns achieved by the Investment Manager according to different principal investment strategies. If the Fund’s current management and strategies had been in place for the prior periods, results shown may have been different. |
| No Deduction of Taxes [Text Block] | Performance does not reflect the deduction of taxes that a shareholder may pay on fund distributions or on the redemptions of fund shares. |
| Updated Performance Information Location [Text Block] | Visit columbiathreadneedleus.com/investment-products/mutual-funds |
| Net Assets | $ 539,461,587 |
| Holdings Count | Holdings | 1,051 |
| Advisory Fees Paid, Amount | $ 6,146,117 |
| Investment Company, Portfolio Turnover | 718% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Fund net assets $ Total number of portfolio holdings 1,051 Management services fees $ Portfolio turnover for the reporting period 718% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 11 |
| 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. Derivative Exposure Long Commodity-Related Investment Risk 33.8 % Credit Risk 0.7 % Equity Risk 47.2 % Foreign Exchange Risk 363.4 % Interest Rate Risk 341.0 % Short Commodity-Related Investment Risk 30.8 % Credit Risk 1.1 % Equity Risk 43.4 % Foreign Exchange Risk 361.3 % Interest Rate Risk 378.5 % Asset Categories |
| Columbia Multi Strategy Alternatives Fund Institutional Class | |
| Shareholder Report [Line Items] | |
| Fund Name | Columbia Multi Strategy Alternatives Fund |
| Class Name | Institutional Class |
| Trading Symbol | CLAZX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Columbia Multi Strategy Alternatives Fund (the Fund) for the period of June 1, 2023 to May 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature |
| 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 Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Institutional Class $ 1.08 % |
| Expenses Paid, Amount | $ 114 |
| Expense Ratio, Percent | 1.08% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance Top Performance Contributors Commodity Futures Long/Short sleeve Global macro sleeves Mortgage Opportunities and Global Tactical Asset Allocation sleeves Derivatives usage Top Performance Detractors G10 Currency sleeve |
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future performance. |
| Line Graph [Table Text Block] | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns (%) 1 year 5 years Since Fund Institutional Class (a) 10.29 1.06 (2.12 ) FTSE One-Month U.S. Treasury Bill Index 5.54 2.10 1.53 HFRX Global Hedge Fund Index 5.89 3.46 1.88 Bloomberg Global Aggregate Index 0.77 (1.62 ) 0.00 (a) The Fund’s performance prior to October 2019 reflects returns achieved by the Investment Manager according to different principal investment strategies. If the Fund’s current management and strategies had been in place for the prior periods, results shown may have been different. |
| No Deduction of Taxes [Text Block] | Performance does not reflect the deduction of taxes that a shareholder may pay on fund distributions or on the redemptions of fund shares. |
| Updated Performance Information Location [Text Block] | Visit columbiathreadneedleus.com/investment-products/mutual-funds |
| Net Assets | $ 539,461,587 |
| Holdings Count | Holdings | 1,051 |
| Advisory Fees Paid, Amount | $ 6,146,117 |
| Investment Company, Portfolio Turnover | 718% |
| Additional Fund Statistics [Text Block] | Key Fu nd Fund net assets $ Total number of portfolio holdings 1,051 Management services fees $ Portfolio turnover for the reporting period 718% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 11 |
| 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 Derivative Exposure Long Commodity-Related Investment Risk 33.8 % Credit Risk 0.7 % Equity Risk 47.2 % Foreign Exchange Risk 363.4 % Interest Rate Risk 341.0 % Short Commodity-Related Investment Risk 30.8 % Credit Risk 1.1 % Equity Risk 43.4 % Foreign Exchange Risk 361.3 % Interest Rate Risk 378.5 % Asset Categories |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | 60 Months Ended | 112 Months Ended | ||||||||||
| May 31, 2024 | May 31, 2024 | May 31, 2024 | May 31, 2023 | May 31, 2022 | May 31, 2021 | May 31, 2020 | May 31, 2019 | May 31, 2018 | May 31, 2017 | May 31, 2016 | May 31, 2015 | ||
| Columbia Multi Strategy Alternatives Fund Class A | |||||||||||||
| Account Value [Line Items] | |||||||||||||
| Line Graph and Table Measure Name | Class A (including sales charges) | ||||||||||||
| Account Value | $ 7,550 | $ 7,550 | $ 7,550 | $ 6,863 | $ 6,959 | $ 7,214 | $ 6,774 | $ 7,251 | $ 8,428 | $ 8,918 | $ 8,943 | $ 9,284 | |
| Average Annual Return, Percent | [1] | 3.67% | (0.36%) | (2.97%) | |||||||||
| Columbia Multi Strategy Alternatives Fund Class A | Without Sales Load [Member] | |||||||||||||
| Account Value [Line Items] | |||||||||||||
| Line Graph and Table Measure Name | Class A (excluding sales charges) | ||||||||||||
| Average Annual Return, Percent | [1] | 10.01% | 0.81% | (2.35%) | |||||||||
| Columbia Multi Strategy Alternatives Fund Advisor Class | |||||||||||||
| Account Value [Line Items] | |||||||||||||
| Line Graph and Table Measure Name | Advisor Class | ||||||||||||
| Account Value | $ 8,202 | $ 8,202 | $ 8,202 | 7,438 | 7,520 | 7,780 | 7,285 | 7,772 | 9,016 | 9,517 | 9,522 | 9,860 | |
| Average Annual Return, Percent | [1] | 10.26% | 1.08% | (2.10%) | |||||||||
| Columbia Multi Strategy Alternatives Fund Class C | |||||||||||||
| Account Value [Line Items] | |||||||||||||
| Line Graph and Table Measure Name | Class C (including sales charges) | ||||||||||||
| Account Value | $ 7,471 | $ 7,471 | $ 7,471 | 6,843 | 6,991 | 7,304 | 6,908 | 7,450 | 8,727 | 9,299 | 9,396 | 9,830 | |
| Average Annual Return, Percent | [1] | 8.18% | 0.06% | (3.07%) | |||||||||
| Columbia Multi Strategy Alternatives Fund Class C | Without Sales Load [Member] | |||||||||||||
| Account Value [Line Items] | |||||||||||||
| Line Graph and Table Measure Name | Class C (excluding sales charges) | ||||||||||||
| Average Annual Return, Percent | [1] | 9.18% | 0.06% | (3.07%) | |||||||||
| Columbia Multi Strategy Alternatives Fund Institutional Class | |||||||||||||
| Account Value [Line Items] | |||||||||||||
| Line Graph and Table Measure Name | Institutional Class | ||||||||||||
| Account Value | $ 8,186 | $ 8,186 | $ 8,186 | 7,423 | 7,509 | 7,767 | 7,277 | 7,764 | 8,998 | 9,507 | 9,502 | 9,860 | |
| Average Annual Return, Percent | [1] | 10.29% | 1.06% | (2.12%) | |||||||||
| FTSE One Month US Treasury Bill Index [Member] | |||||||||||||
| Account Value [Line Items] | |||||||||||||
| Line Graph and Table Measure Name | FTSE One-Month U.S. Treasury Bill Index | ||||||||||||
| Account Value | $ 11,528 | $ 11,528 | $ 11,528 | 10,923 | 10,572 | 10,562 | 10,555 | 10,392 | 10,166 | 10,046 | 10,009 | 10,000 | |
| Average Annual Return, Percent | 5.54% | 2.10% | 1.53% | ||||||||||
| HFRX Global Hedge Fund Index [Member] | |||||||||||||
| Account Value [Line Items] | |||||||||||||
| Line Graph and Table Measure Name | HFRX Global Hedge Fund Index | ||||||||||||
| Account Value | $ 11,898 | $ 11,898 | $ 11,898 | 11,236 | 11,380 | 11,734 | 10,334 | 10,038 | 10,422 | 10,130 | 9,558 | 10,277 | |
| Average Annual Return, Percent | 5.89% | 3.46% | 1.88% | ||||||||||
| Bloomberg Global Aggregate Index [Member] | |||||||||||||
| Account Value [Line Items] | |||||||||||||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Index | ||||||||||||
| Account Value | $ 9,997 | $ 9,997 | $ 9,997 | $ 9,920 | $ 10,385 | $ 11,966 | $ 11,455 | $ 10,848 | $ 10,522 | $ 10,344 | $ 10,265 | $ 9,747 | |
| Average Annual Return, Percent | 0.77% | (1.62%) | 0% | ||||||||||
| [1]The Fund’s performance prior to October 2019 reflects returns achieved by the Investment Manager according to different principal investment strategies. If the Fund’s current management and strategies had been in place for the prior periods, results shown may have been different. | |||||||||||||
| Shareholder Report, Holdings (Details) | May 31, 2024 |
| Columbia Multi Strategy Alternatives Fund Class A | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.50% |
| Columbia Multi Strategy Alternatives Fund Class A | Residential Mortgage Backed Securities Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 38.10% |
| Columbia Multi Strategy Alternatives Fund Class A | Treasury Bills [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| Columbia Multi Strategy Alternatives Fund Class A | Residential Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Columbia Multi Strategy Alternatives Fund Class A | Asset Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| Columbia Multi Strategy Alternatives Fund Class A | Commercial Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Multi Strategy Alternatives Fund Class A | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia Multi Strategy Alternatives Fund Class A | Long Commodity Related Investment Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.80% |
| Columbia Multi Strategy Alternatives Fund Class A | Long Credit Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia Multi Strategy Alternatives Fund Class A | Long Equity Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 47.20% |
| Columbia Multi Strategy Alternatives Fund Class A | Long Foreign Exchange Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 363.40% |
| Columbia Multi Strategy Alternatives Fund Class A | Long Interest Rate Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 341% |
| Columbia Multi Strategy Alternatives Fund Class A | Short Commodity Related Investment Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.80% |
| Columbia Multi Strategy Alternatives Fund Class A | Short Credit Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Multi Strategy Alternatives Fund Class A | Short Equity Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.40% |
| Columbia Multi Strategy Alternatives Fund Class A | Short Foreign Exchange Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 361.30% |
| Columbia Multi Strategy Alternatives Fund Class A | Short Interest Rate Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 378.50% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.50% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Residential Mortgage Backed Securities Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 38.10% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Treasury Bills [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Residential Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Asset Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Commercial Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Long Commodity Related Investment Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.80% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Long Credit Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Long Equity Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 47.20% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Long Foreign Exchange Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 363.40% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Long Interest Rate Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 341% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Short Commodity Related Investment Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.80% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Short Credit Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Short Equity Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.40% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Short Foreign Exchange Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 361.30% |
| Columbia Multi Strategy Alternatives Fund Advisor Class | Short Interest Rate Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 378.50% |
| Columbia Multi Strategy Alternatives Fund Class C | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.50% |
| Columbia Multi Strategy Alternatives Fund Class C | Residential Mortgage Backed Securities Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 38.10% |
| Columbia Multi Strategy Alternatives Fund Class C | Treasury Bills [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| Columbia Multi Strategy Alternatives Fund Class C | Residential Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Columbia Multi Strategy Alternatives Fund Class C | Asset Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| Columbia Multi Strategy Alternatives Fund Class C | Commercial Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Multi Strategy Alternatives Fund Class C | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia Multi Strategy Alternatives Fund Class C | Long Commodity Related Investment Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.80% |
| Columbia Multi Strategy Alternatives Fund Class C | Long Credit Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia Multi Strategy Alternatives Fund Class C | Long Equity Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 47.20% |
| Columbia Multi Strategy Alternatives Fund Class C | Long Foreign Exchange Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 363.40% |
| Columbia Multi Strategy Alternatives Fund Class C | Long Interest Rate Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 341% |
| Columbia Multi Strategy Alternatives Fund Class C | Short Commodity Related Investment Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.80% |
| Columbia Multi Strategy Alternatives Fund Class C | Short Credit Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Multi Strategy Alternatives Fund Class C | Short Equity Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.40% |
| Columbia Multi Strategy Alternatives Fund Class C | Short Foreign Exchange Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 361.30% |
| Columbia Multi Strategy Alternatives Fund Class C | Short Interest Rate Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 378.50% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Money Market Fund [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.50% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Residential Mortgage Backed Securities Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 38.10% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Treasury Bills [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Residential Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Asset Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Commercial Mortgage Backed Securities Non Agency [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Other [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Long Commodity Related Investment Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.80% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Long Credit Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Long Equity Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 47.20% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Long Foreign Exchange Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 363.40% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Long Interest Rate Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 341% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Short Commodity Related Investment Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.80% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Short Credit Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Short Equity Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 43.40% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Short Foreign Exchange Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 361.30% |
| Columbia Multi Strategy Alternatives Fund Institutional Class | Short Interest Rate Risk [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 378.50% |
