Columbia Balanced Fund (CBALX) N-CSRS 3 Feb 25 Certified semi-annual shareholder report (management investment company) Financial data

Form N-CSR Cover

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 I
Entity Central Index Key	0000773757
Entity Investment Company Type	N-1A
Document Period End Date	Nov. 30, 2024

Shareholder Report

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 I
Entity Central Index Key	0000773757
Entity Investment Company Type	N-1A
Document Period End Date	Nov. 30, 2024
Columbia Adaptive Risk Allocation Fund - Class A
Shareholder Report [Line Items]
Fund Name	Columbia Adaptive Risk Allocation Fund
Class Name	Class A
Trading Symbol	CRAAX
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 $ 1.00 % (a) (a) Annualized.
Expenses Paid, Amount	$ 52
Expense Ratio, Percent	1%	[1]
Net Assets	$ 2,568,139,822
Holdings Count | Holding	354
Investment Company, Portfolio Turnover	102%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $ Total number of portfolio holdings 354 Portfolio turnover for the reporting period 102% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 51%
Holdings [Text Block]	Graphical Representation of Fund The tables below show the investment makeup Derivative Exposure Long Credit Risk 41.1 % Equity Risk 55.5 % Foreign Exchange Risk 14.1 % Interest Rate Risk 18.6 % Short Equity Risk 4.7 % Foreign Exchange Risk 43.4 % Interest Rate Risk 2.2 % Asset Categories
Columbia Adaptive Risk Allocation Fund - Class C
Shareholder Report [Line Items]
Fund Name	Columbia Adaptive Risk Allocation Fund
Class Name	Class C
Trading Symbol	CRACX
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 re (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 $ 1.74 % (a) (a) Annualized.
Expenses Paid, Amount	$ 90
Expense Ratio, Percent	1.74%	[1]
Net Assets	$ 2,568,139,822
Holdings Count | Holding	354
Investment Company, Portfolio Turnover	102%
Additional Fund Statistics [Text Block]	Key Fund St atis Fund net assets $ Total number of portfolio holdings 354 Portfolio turnover for the reporting period 102% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 51%
Holdings [Text Block]	Graphical Repre sent 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 Credit Risk 41.1 % Equity Risk 55.5 % Foreign Exchange Risk 14.1 % Interest Rate Risk 18.6 % Short Equity Risk 4.7 % Foreign Exchange Risk 43.4 % Interest Rate Risk 2.2 % Asset Categories
Columbia Adaptive Risk Allocation Fund - Institutional Class
Shareholder Report [Line Items]
Fund Name	Columbia Adaptive Risk Allocation Fund
Class Name	Institutional Class
Trading Symbol	CRAZX
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 $ 0.75 % (a) (a) Annualized.
Expenses Paid, Amount	$ 39
Expense Ratio, Percent	0.75%	[1]
Net Assets	$ 2,568,139,822
Holdings Count | Holding	354
Investment Company, Portfolio Turnover	102%
Additional Fund Statistics [Text Block]	Key Fund St atist Fund net assets $ Total number of portfolio holdings 354 Portfolio turnover for the reporting period 102% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 51%
Holdings [Text Block]	Graphical Represe ntatio 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 Credit Risk 41.1 % Equity Risk 55.5 % Foreign Exchange Risk 14.1 % Interest Rate Risk 18.6 % Short Equity Risk 4.7 % Foreign Exchange Risk 43.4 % Interest Rate Risk 2.2 % Asset Categories
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class
Shareholder Report [Line Items]
Fund Name	Columbia Adaptive Risk Allocation Fund
Class Name	Institutional 2 Class
Trading Symbol	CRDRX
Annual or Semi-Annual Statement [Text Block]	This semiannual shareholder report
Shareholder Report Annual or Semi-Annual	semi-annual shareholder report
Additional Information [Text Block]	You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature 1-800-345-6611.
Additional Information Phone Number	1-800-345-6611
Additional Information Website	columbiathreadneedleus.com/resources/literature
Expenses [Text Block]	What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment) Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment Institutional 2 Class $ 0.75 % (a) (a) Annualized.
Expenses Paid, Amount	$ 39
Expense Ratio, Percent	0.75%	[1]
Net Assets	$ 2,568,139,822
Holdings Count | Holding	354
Investment Company, Portfolio Turnover	102%
Additional Fund Statistics [Text Block]	Key Fund S tati Fund net assets $ Total number of portfolio holdings 354 Portfolio turnover for the reporting period 102% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 51%
Holdings [Text Block]	Graphical Repres entati 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 Credit Risk 41.1 % Equity Risk 55.5 % Foreign Exchange Risk 14.1 % Interest Rate Risk 18.6 % Short Equity Risk 4.7 % Foreign Exchange Risk 43.4 % Interest Rate Risk 2.2 % Asset Categories
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class
Shareholder Report [Line Items]
Fund Name	Columbia Adaptive Risk Allocation Fund
Class Name	Institutional 3 Class
Trading Symbol	CARYX
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 $ 0.70 % (a) (a) Annualized.
Expenses Paid, Amount	$ 36
Expense Ratio, Percent	0.70%	[1]
Net Assets	$ 2,568,139,822
Holdings Count | Holding	354
Investment Company, Portfolio Turnover	102%
Additional Fund Statistics [Text Block]	Key Fund S tatist Fund net assets $ Total number of portfolio holdings 354 Portfolio turnover for the reporting period 102% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 51%
Holdings [Text Block]	Graphical Repre sentatio 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 Credit Risk 41.1 % Equity Risk 55.5 % Foreign Exchange Risk 14.1 % Interest Rate Risk 18.6 % Short Equity Risk 4.7 % Foreign Exchange Risk 43.4 % Interest Rate Risk 2.2 % Asset Categories
Columbia Adaptive Risk Allocation Fund - Class S
Shareholder Report [Line Items]
Fund Name	Columbia Adaptive Risk Allocation Fund
Class Name	Class S
Trading Symbol	CRADX
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) 0.79 % (b) (a) Based on operations from October 2, 2024 (commencement of operations) through the stated period end. Had the class been open for the entire reporting period, expenses shown in the table above would have been higher. (b) Annualized.
Expenses Paid, Amount	$ 12	[2]
Expense Ratio, Percent	0.79%	[1]
Net Assets	$ 2,568,139,822
Holdings Count | Holding	354
Investment Company, Portfolio Turnover	102%
Additional Fund Statistics [Text Block]	Key Fund S tatis Fund net assets $ Total number of portfolio holdings 354 Portfolio turnover for the reporting period 102% Portfolio turnover for the reporting period excluding to be announced (TBA) securities 51%
Holdings [Text Block]	Graphical Repres entatio 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 Credit Risk 41.1 % Equity Risk 55.5 % Foreign Exchange Risk 14.1 % Interest Rate Risk 18.6 % Short Equity Risk 4.7 % Foreign Exchange Risk 43.4 % Interest Rate Risk 2.2 % Asset Categories
[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 (D

Shareholder Report, Holdings (Details)	Nov. 30, 2024
Columbia Adaptive Risk Allocation Fund - Class A | Credit Risks [Member]
Holdings [Line Items]
Percent of Net Asset Value	41.10%
Columbia Adaptive Risk Allocation Fund - Class A | Equity Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	55.50%
Columbia Adaptive Risk Allocation Fund - Class A | Foreign Exchange Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Columbia Adaptive Risk Allocation Fund - Class A | Interest Rate Risks Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.60%
Columbia Adaptive Risk Allocation Fund - Class A | Equity Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Columbia Adaptive Risk Allocation Fund - Class A | Foreign Exchange Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	43.40%
Columbia Adaptive Risk Allocation Fund - Class A | Interest Rate Risks Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Columbia Adaptive Risk Allocation Fund - Class A | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	39.40%
Columbia Adaptive Risk Allocation Fund - Class A | Inflation-Indexed Bonds [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Adaptive Risk Allocation Fund - Class A | Alternative Strategies Funds [Member]
Holdings [Line Items]
Percent of Net Asset Value	11%
Columbia Adaptive Risk Allocation Fund - Class A | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.70%
Columbia Adaptive Risk Allocation Fund - Class A | Foreign Government Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
Columbia Adaptive Risk Allocation Fund - Class A | U.S. Treasury Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Columbia Adaptive Risk Allocation Fund - Class A | Residential Mortgage-Backed Securities-Agency [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Columbia Adaptive Risk Allocation Fund - Class C | Credit Risks [Member]
Holdings [Line Items]
Percent of Net Asset Value	41.10%
Columbia Adaptive Risk Allocation Fund - Class C | Equity Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	55.50%
Columbia Adaptive Risk Allocation Fund - Class C | Foreign Exchange Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Columbia Adaptive Risk Allocation Fund - Class C | Interest Rate Risks Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.60%
Columbia Adaptive Risk Allocation Fund - Class C | Equity Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Columbia Adaptive Risk Allocation Fund - Class C | Foreign Exchange Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	43.40%
Columbia Adaptive Risk Allocation Fund - Class C | Interest Rate Risks Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Columbia Adaptive Risk Allocation Fund - Class C | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	39.40%
Columbia Adaptive Risk Allocation Fund - Class C | Inflation-Indexed Bonds [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Adaptive Risk Allocation Fund - Class C | Alternative Strategies Funds [Member]
Holdings [Line Items]
Percent of Net Asset Value	11%
Columbia Adaptive Risk Allocation Fund - Class C | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.70%
Columbia Adaptive Risk Allocation Fund - Class C | Foreign Government Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
Columbia Adaptive Risk Allocation Fund - Class C | U.S. Treasury Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Columbia Adaptive Risk Allocation Fund - Class C | Residential Mortgage-Backed Securities-Agency [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Credit Risks [Member]
Holdings [Line Items]
Percent of Net Asset Value	41.10%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Equity Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	55.50%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Foreign Exchange Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Interest Rate Risks Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.60%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Equity Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Foreign Exchange Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	43.40%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Interest Rate Risks Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	39.40%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Inflation-Indexed Bonds [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Alternative Strategies Funds [Member]
Holdings [Line Items]
Percent of Net Asset Value	11%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.70%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Foreign Government Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
Columbia Adaptive Risk Allocation Fund - Institutional Class | U.S. Treasury Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Columbia Adaptive Risk Allocation Fund - Institutional Class | Residential Mortgage-Backed Securities-Agency [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Credit Risks [Member]
Holdings [Line Items]
Percent of Net Asset Value	41.10%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Equity Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	55.50%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Foreign Exchange Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Interest Rate Risks Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.60%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Equity Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Foreign Exchange Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	43.40%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Interest Rate Risks Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	39.40%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Inflation-Indexed Bonds [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Alternative Strategies Funds [Member]
Holdings [Line Items]
Percent of Net Asset Value	11%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.70%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Foreign Government Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | U.S. Treasury Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Columbia Adaptive Risk Allocation Fund - Institutional 2 Class | Residential Mortgage-Backed Securities-Agency [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Credit Risks [Member]
Holdings [Line Items]
Percent of Net Asset Value	41.10%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Equity Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	55.50%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Foreign Exchange Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Interest Rate Risks Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.60%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Equity Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Foreign Exchange Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	43.40%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Interest Rate Risks Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	39.40%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Inflation-Indexed Bonds [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Alternative Strategies Funds [Member]
Holdings [Line Items]
Percent of Net Asset Value	11%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.70%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Foreign Government Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | U.S. Treasury Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Columbia Adaptive Risk Allocation Fund - Institutional 3 Class | Residential Mortgage-Backed Securities-Agency [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Columbia Adaptive Risk Allocation Fund - Class S | Credit Risks [Member]
Holdings [Line Items]
Percent of Net Asset Value	41.10%
Columbia Adaptive Risk Allocation Fund - Class S | Equity Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	55.50%
Columbia Adaptive Risk Allocation Fund - Class S | Foreign Exchange Risk Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Columbia Adaptive Risk Allocation Fund - Class S | Interest Rate Risks Long [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.60%
Columbia Adaptive Risk Allocation Fund - Class S | Equity Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%
Columbia Adaptive Risk Allocation Fund - Class S | Foreign Exchange Risk Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	43.40%
Columbia Adaptive Risk Allocation Fund - Class S | Interest Rate Risks Short [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
Columbia Adaptive Risk Allocation Fund - Class S | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	39.40%
Columbia Adaptive Risk Allocation Fund - Class S | Inflation-Indexed Bonds [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Adaptive Risk Allocation Fund - Class S | Alternative Strategies Funds [Member]
Holdings [Line Items]
Percent of Net Asset Value	11%
Columbia Adaptive Risk Allocation Fund - Class S | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.70%
Columbia Adaptive Risk Allocation Fund - Class S | Foreign Government Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
Columbia Adaptive Risk Allocation Fund - Class S | U.S. Treasury Obligations [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Columbia Adaptive Risk Allocation Fund - Class S | Residential Mortgage-Backed Securities-Agency [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.70%