Columbia Balanced Fund (CBALX) N-CSR 5 Nov 24 Certified annual shareholder report (management investment company) Financial data

Form N-CSR Cover

Form N-CSR Cover	12 Months Ended
	Aug. 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	Aug. 31, 2024

Shareholder Report

Shareholder Report	12 Months Ended
	Aug. 31, 2024 USD ($) Holding
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	Aug. 31, 2024
Columbia International Dividend Income Fund - Class A
Shareholder Report [Line Items]
Fund Name	Columbia International Dividend Income Fund
Class Name	Class A
Trading Symbol	CSVAX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Columbia International Dividend Income Fund (the Fund) for the period of September 1, 2023 to August 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 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 $ 1.24 %
Expenses Paid, Amount	$ 135
Expense Ratio, Percent	1.24%
Factors Affecting Performance [Text Block]	Management's Discussion of Fund Performance The performance of Class A shares for the period presented is shown in the Average Annual Total Returns table. Top Performance Contributors Stock selection Allocations Individual holdings Top Performance Detractors Stock selection Allocations Individual holdings
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 10 years Class A (excluding sales charges) (a) 17.92 7.71 4.72 Class A (including sales charges) (a) 11.11 6.45 4.10 MSCI ACWI ex USA Index (Net) 18.21 7.56 4.42 MSCI ACWI ex USA Value Index (Net) 19.40 8.05 3.42 (a) The Fund's performance prior to September 2020 reflects returns achieved according to different principal investment strategies
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	$ 574,284,326
Holdings Count | Holding	60
Advisory Fees Paid, Amount	$ 4,202,408
Investment Company, Portfolio Turnover	39%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $ Total number of portfolio holdings 60 Management services fees $ Portfolio turnover for the reporting period 39%
Holdings [Text Block]	Top Holdings Taiwan Semiconductor Manufacturing Co., Ltd. 2.9 % Unilever PLC 2.8 % Roche Holding AG, Genusschein Shares 2.8 % Samsung Electronics Co., Ltd. 2.8 % SAP SE 2.8 % Shell PLC 2.7 % ORIX Corp. 2.7 % Royal Bank of Canada 2.6 % Deutsche Telekom AG, Registered Shares 2.5 % Siemens AG, Registered Shares 2.5 % Equity Sector Allocation Geographic Allocation
Largest Holdings [Text Block]	Top Holdings Taiwan Semiconductor Manufacturing Co., Ltd. 2.9 % Unilever PLC 2.8 % Roche Holding AG, Genusschein Shares 2.8 % Samsung Electronics Co., Ltd. 2.8 % SAP SE 2.8 % Shell PLC 2.7 % ORIX Corp. 2.7 % Royal Bank of Canada 2.6 % Deutsche Telekom AG, Registered Shares 2.5 % Siemens AG, Registered Shares 2.5 %
Updated Prospectus Web Address	columbiathreadneedleus.com/investment-products/mutual-funds
Columbia International Dividend Income Fund - Advisor Class
Shareholder Report [Line Items]
Fund Name	Columbia International Dividend Income Fund
Class Name	Advisor Class
Trading Symbol	CGOLX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Columbia International Dividend Income Fund (the Fund) for the period of September 1, 2023 to August 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 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 $ 0.99 %
Expenses Paid, Amount	$ 108
Expense Ratio, Percent	0.99%
Factors Affecting Performance [Text Block]	Management's Discussion of Fund Performance The performance of Advisor Class shares for the period presented is shown in the Average Annual Total Returns table. Top Performance Contributors Stock selection Allocations Individual holdings Top Performance Detractors Stock selection Allocations Individual holdings
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 10 years Advisor Class (a) 18.22 7.98 4.98 MSCI ACWI ex USA Index (Net) 18.21 7.56 4.42 MSCI ACWI ex USA Value Index (Net) 19.40 8.05 3.42 (a) The Fund's performance prior to September 2020 reflects returns achieved according to different principal investment strategies. If the Fund's current 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	$ 574,284,326
Holdings Count | Holding	60
Advisory Fees Paid, Amount	$ 4,202,408
Investment Company, Portfolio Turnover	39%
Additional Fund Statistics [Text Block]	Fund net assets $ Total number of portfolio holdings 60 Management services fees $ Portfolio turnover for the reporting period 39%
Holdings [Text Block]	Top Holdings Taiwan Semiconductor Manufacturing Co., Ltd. 2.9 % Unilever PLC 2.8 % Roche Holding AG, Genusschein Shares 2.8 % Samsung Electronics Co., Ltd. 2.8 % SAP SE 2.8 % Shell PLC 2.7 % ORIX Corp. 2.7 % Royal Bank of Canada 2.6 % Deutsche Telekom AG, Registered Shares 2.5 % Siemens AG, Registered Shares 2.5 % Equity Sector Allocation Geographic Allocation
Largest Holdings [Text Block]	Top Holdings Taiwan Semiconductor Manufacturing Co., Ltd. 2.9 % Unilever PLC 2.8 % Roche Holding AG, Genusschein Shares 2.8 % Samsung Electronics Co., Ltd. 2.8 % SAP SE 2.8 % Shell PLC 2.7 % ORIX Corp. 2.7 % Royal Bank of Canada 2.6 % Deutsche Telekom AG, Registered Shares 2.5 % Siemens AG, Registered Shares 2.5 %
Updated Prospectus Web Address	columbiathreadneedleus.com/investment-products/mutual-funds
Columbia International Dividend Income Fund - Institutional Class
Shareholder Report [Line Items]
Fund Name	Columbia International Dividend Income Fund
Class Name	Institutional Class
Trading Symbol	CSVFX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Columbia International Dividend Income Fund (the Fund) for the period of September 1, 2023 to August 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 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 $ 0.99 %
Expenses Paid, Amount	$ 108
Expense Ratio, Percent	0.99%
Factors Affecting Performance [Text Block]	Management's Discussion of Fund Performance The performance of Institutional Class shares for the period presented is shown in the Average Annual Total Returns table. Top Performance Contributors Stock selection Allocations Individual holdings Top Performance Detractors Stock selection Allocations Individual holdings
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 10 years Institutional Class (a) 18.23 7.98 4.98 MSCI ACWI ex USA Index (Net) 18.21 7.56 4.42 MSCI ACWI ex USA Value Index (Net) 19.40 8.05 3.42 (a) The Fund's performance prior to September 2020 reflects returns achieved according to different principal investment strategies. If the Fund's current 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	$ 574,284,326
Holdings Count | Holding	60
Advisory Fees Paid, Amount	$ 4,202,408
Investment Company, Portfolio Turnover	39%
Additional Fund Statistics [Text Block]	Fund net assets $ Total number of portfolio holdings 60 Management services fees $ Portfolio turnover for the reporting period 39%
Holdings [Text Block]	Top Holdings Taiwan Semiconductor Manufacturing Co., Ltd. 2.9 % Unilever PLC 2.8 % Roche Holding AG, Genusschein Shares 2.8 % Samsung Electronics Co., Ltd. 2.8 % SAP SE 2.8 % Shell PLC 2.7 % ORIX Corp. 2.7 % Royal Bank of Canada 2.6 % Deutsche Telekom AG, Registered Shares 2.5 % Siemens AG, Registered Shares 2.5 % Equity Sector Allocation Geographic Allocation
Largest Holdings [Text Block]	Top Holdings Taiwan Semiconductor Manufacturing Co., Ltd. 2.9 % Unilever PLC 2.8 % Roche Holding AG, Genusschein Shares 2.8 % Samsung Electronics Co., Ltd. 2.8 % SAP SE 2.8 % Shell PLC 2.7 % ORIX Corp. 2.7 % Royal Bank of Canada 2.6 % Deutsche Telekom AG, Registered Shares 2.5 % Siemens AG, Registered Shares 2.5 %
Updated Prospectus Web Address	columbiathreadneedleus.com/investment-products/mutual-funds
Columbia International Dividend Income Fund - Institutional 2 Class
Shareholder Report [Line Items]
Fund Name	Columbia International Dividend Income Fund
Class Name	Institutional 2 Class
Trading Symbol	CADPX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Columbia International Dividend Income Fund (the Fund) for the period of September 1, 2023 to August 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 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 $ 0.85 %
Expenses Paid, Amount	$ 93
Expense Ratio, Percent	0.85%
Factors Affecting Performance [Text Block]	Management's Discussion of Fund Performance The performance of Institutional 2 Class shares for the period presented is shown in the Average Annual Total Returns table. Top Performance Contributors Stock selection Allocations Individual holdings Top Performance Detractors Stock selection Allocations Individual holdings
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 10 years Institutional 2 Class (a) 18.39 8.13 5.13 MSCI ACWI ex USA Index (Net) 18.21 7.56 4.42 MSCI ACWI ex USA Value Index (Net) 19.40 8.05 3.42 (a) The Fund's performance prior to September 2020 reflects returns achieved according to different principal investment strategies. If the Fund's current 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	$ 574,284,326
Holdings Count | Holding	60
Advisory Fees Paid, Amount	$ 4,202,408
Investment Company, Portfolio Turnover	39%
Additional Fund Statistics [Text Block]	Fund net assets $ Total number of portfolio holdings 60 Management services fees $ Portfolio turnover for the reporting period 39%
Holdings [Text Block]	Top Holdings Taiwan Semiconductor Manufacturing Co., Ltd. 2.9 % Unilever PLC 2.8 % Roche Holding AG, Genusschein Shares 2.8 % Samsung Electronics Co., Ltd. 2.8 % SAP SE 2.8 % Shell PLC 2.7 % ORIX Corp. 2.7 % Royal Bank of Canada 2.6 % Deutsche Telekom AG, Registered Shares 2.5 % Siemens AG, Registered Shares 2.5 % Equity Sector Allocation Geographic Allocation
Largest Holdings [Text Block]	Top Holdings Taiwan Semiconductor Manufacturing Co., Ltd. 2.9 % Unilever PLC 2.8 % Roche Holding AG, Genusschein Shares 2.8 % Samsung Electronics Co., Ltd. 2.8 % SAP SE 2.8 % Shell PLC 2.7 % ORIX Corp. 2.7 % Royal Bank of Canada 2.6 % Deutsche Telekom AG, Registered Shares 2.5 % Siemens AG, Registered Shares 2.5 %
Updated Prospectus Web Address	columbiathreadneedleus.com/investment-products/mutual-funds
Columbia International Dividend Income Fund - Institutional 3 Class
Shareholder Report [Line Items]
Fund Name	Columbia International Dividend Income Fund
Class Name	Institutional 3 Class
Trading Symbol	CLSYX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Columbia International Dividend Income Fund (the Fund) for the period of September 1, 2023 to August 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 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 $ 0.80 %
Expenses Paid, Amount	$ 87
Expense Ratio, Percent	0.80%
Factors Affecting Performance [Text Block]	Management's Discussion of Fund Performance The performance of Institutional 3 Class shares for the period presented is shown in the Average Annual Total Returns table. Top Performance Contributors Stock selection Allocations Individual holdings Top Performance Detractors Stock selection Allocations Individual holdings
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 10 years Institutional 3 Class (a) 18.46 8.18 5.20 MSCI ACWI ex USA Index (Net) 18.21 7.56 4.42 MSCI ACWI ex USA Value Index (Net) 19.40 8.05 3.42 (a) The Fund's performance prior to September 2020 reflects returns achieved according to different principal investment strategies. If the Fund's current 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	$ 574,284,326
Holdings Count | Holding	60
Advisory Fees Paid, Amount	$ 4,202,408
Investment Company, Portfolio Turnover	39%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $ Total number of portfolio holdings 60 Management services fees $ Portfolio turnover for the reporting period 39%
Holdings [Text Block]	Graphical Representation of Fund The tables below show the investment makeup of the Fund represented Top Holdings Taiwan Semiconductor Manufacturing Co., Ltd. 2.9 % Unilever PLC 2.8 % Roche Holding AG, Genusschein Shares 2.8 % Samsung Electronics Co., Ltd. 2.8 % SAP SE 2.8 % Shell PLC 2.7 % ORIX Corp. 2.7 % Royal Bank of Canada 2.6 % Deutsche Telekom AG, Registered Shares 2.5 % Siemens AG, Registered Shares 2.5 % Equity Sector Allocation Geographic Allocation
Largest Holdings [Text Block]	Top Holdings Taiwan Semiconductor Manufacturing Co., Ltd. 2.9 % Unilever PLC 2.8 % Roche Holding AG, Genusschein Shares 2.8 % Samsung Electronics Co., Ltd. 2.8 % SAP SE 2.8 % Shell PLC 2.7 % ORIX Corp. 2.7 % Royal Bank of Canada 2.6 % Deutsche Telekom AG, Registered Shares 2.5 % Siemens AG, Registered Shares 2.5 %
Updated Prospectus Web Address	columbiathreadneedleus.com/investment-products/mutual-funds

Shareholder Report, Line Graph

Shareholder Report, Line Graph (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2014
Columbia International Dividend Income Fund - Institutional 3 Class
Account Value [Line Items]
Line Graph and Table Measure Name	Institutional 3 Class
Account Value	$ 16,602	$ 14,015	$ 12,015	$ 14,586	$ 11,549	$ 11,205	$ 11,173	$ 10,469	$ 9,435	$ 8,896	$ 10,000
Columbia International Dividend Income Fund - Institutional 2 Class
Account Value [Line Items]
Line Graph and Table Measure Name	Institutional 2 Class
Account Value	$ 16,499	13,936	11,957	14,521	11,504	11,161	11,135	10,445	9,416	8,887	10,000
Columbia International Dividend Income Fund - Institutional Class
Account Value [Line Items]
Line Graph and Table Measure Name	Institutional Class
Account Value	$ 16,264	13,756	11,819	14,375	11,399	11,082	11,071	10,395	9,389	8,872	10,000
Columbia International Dividend Income Fund - Advisor Class
Account Value [Line Items]
Line Graph and Table Measure Name	Advisor Class
Account Value	$ 16,265	13,758	11,818	14,373	11,400	11,078	11,068	10,395	9,388	8,873	10,000
Columbia International Dividend Income Fund - Class A
Account Value [Line Items]
Line Graph and Table Measure Name	Class A (including sales charges)
Account Value	$ 14,950	12,679	10,914	13,313	10,584	10,311	10,328	9,724	8,802	8,342	9,425
MSCI ACWI ex USA Index (Net) [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI ACWI ex USA Index (Net)
Account Value	$ 15,410	13,036	11,650	14,476	11,593	10,703	11,065	10,724	9,021	8,765	10,000
MSCI ACWI ex USA Value Index (Net) [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI ACWI ex USA Value Index (Net)
Account Value	$ 13,996	$ 11,722	$ 10,227	$ 11,833	$ 9,204	$ 9,504	$ 10,178	$ 10,120	$ 8,413	$ 8,401	$ 10,000

Shareholder Report, Average Ann

Shareholder Report, Average Annual Return (Details)		12 Months Ended	60 Months Ended	120 Months Ended
		Aug. 31, 2024	Aug. 31, 2024	Aug. 31, 2024
Columbia International Dividend Income Fund - Institutional 3 Class
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Institutional 3 Class
Average Annual Return, Percent	[1]	18.46%	8.18%	5.20%
Columbia International Dividend Income Fund - Institutional 2 Class
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Institutional 2 Class
Average Annual Return, Percent	[1]	18.39%	8.13%	5.13%
Columbia International Dividend Income Fund - Institutional Class
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Institutional Class
Average Annual Return, Percent	[1]	18.23%	7.98%	4.98%
Columbia International Dividend Income Fund - Advisor Class
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Advisor Class
Average Annual Return, Percent	[1]	18.22%	7.98%	4.98%
Columbia International Dividend Income Fund - Class A
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Class A (including sales charges)
Average Annual Return, Percent	[1]	11.11%	6.45%	4.10%
Without Sales Load [Member] | Columbia International Dividend Income Fund - Class A
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Class A (excluding sales charges)
Average Annual Return, Percent	[1]	17.92%	7.71%	4.72%
MSCI ACWI ex USA Index (Net) [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		MSCI ACWI ex USA Index (Net)
Average Annual Return, Percent		18.21%	7.56%	4.42%
MSCI ACWI ex USA Value Index (Net) [Member]
Average Annual Return [Line Items]
Line Graph and Table Measure Name		MSCI ACWI ex USA Value Index (Net)
Average Annual Return, Percent		19.40%	8.05%	3.42%
[1]The Fund's performance prior to September 2020 reflects returns achieved according to different principal investment strategies. If the Fund's current strategies had been in place for the prior periods, results shown may have been different.

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Aug. 31, 2024
Columbia International Dividend Income Fund - Class A | Taiwan Semiconductor Manufacturing Co., Ltd. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Columbia International Dividend Income Fund - Class A | Unilever PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Class A | Roche Holding AG, Genusschein Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Class A | Samsung Electronics Co., Ltd. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Class A | SAP SE [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Class A | Shell PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia International Dividend Income Fund - Class A | ORIX Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia International Dividend Income Fund - Class A | Royal Bank of Canada [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia International Dividend Income Fund - Class A | Deutsche Telekom AG, Registered Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia International Dividend Income Fund - Class A | Siemens AG, Registered Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia International Dividend Income Fund - Class A | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	21.20%
Columbia International Dividend Income Fund - Class A | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia International Dividend Income Fund - Class A | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia International Dividend Income Fund - Class A | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Columbia International Dividend Income Fund - Class A | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10%
Columbia International Dividend Income Fund - Class A | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Columbia International Dividend Income Fund - Class A | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia International Dividend Income Fund - Class A | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.90%
Columbia International Dividend Income Fund - Class A | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Columbia International Dividend Income Fund - Class A | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Columbia International Dividend Income Fund - Class A | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Columbia International Dividend Income Fund - Class A | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia International Dividend Income Fund - Class A | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	10.50%
Columbia International Dividend Income Fund - Class A | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Columbia International Dividend Income Fund - Class A | CANADA
Holdings [Line Items]
Percent of Net Asset Value	8.70%
Columbia International Dividend Income Fund - Class A | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	8.10%
Columbia International Dividend Income Fund - Class A | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia International Dividend Income Fund - Class A | IRELAND
Holdings [Line Items]
Percent of Net Asset Value	5%
Columbia International Dividend Income Fund - Class A | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia International Dividend Income Fund - Class A | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia International Dividend Income Fund - Class A | Other [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.50%
Columbia International Dividend Income Fund - Advisor Class | Taiwan Semiconductor Manufacturing Co., Ltd. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Columbia International Dividend Income Fund - Advisor Class | Unilever PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Advisor Class | Roche Holding AG, Genusschein Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Advisor Class | Samsung Electronics Co., Ltd. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Advisor Class | SAP SE [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Advisor Class | Shell PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia International Dividend Income Fund - Advisor Class | ORIX Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia International Dividend Income Fund - Advisor Class | Royal Bank of Canada [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia International Dividend Income Fund - Advisor Class | Deutsche Telekom AG, Registered Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia International Dividend Income Fund - Advisor Class | Siemens AG, Registered Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia International Dividend Income Fund - Advisor Class | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	21.20%
Columbia International Dividend Income Fund - Advisor Class | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia International Dividend Income Fund - Advisor Class | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia International Dividend Income Fund - Advisor Class | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Columbia International Dividend Income Fund - Advisor Class | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10%
Columbia International Dividend Income Fund - Advisor Class | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Columbia International Dividend Income Fund - Advisor Class | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia International Dividend Income Fund - Advisor Class | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.90%
Columbia International Dividend Income Fund - Advisor Class | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Columbia International Dividend Income Fund - Advisor Class | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Columbia International Dividend Income Fund - Advisor Class | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Columbia International Dividend Income Fund - Advisor Class | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia International Dividend Income Fund - Advisor Class | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	10.50%
Columbia International Dividend Income Fund - Advisor Class | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Columbia International Dividend Income Fund - Advisor Class | CANADA
Holdings [Line Items]
Percent of Net Asset Value	8.70%
Columbia International Dividend Income Fund - Advisor Class | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	8.10%
Columbia International Dividend Income Fund - Advisor Class | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia International Dividend Income Fund - Advisor Class | IRELAND
Holdings [Line Items]
Percent of Net Asset Value	5%
Columbia International Dividend Income Fund - Advisor Class | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia International Dividend Income Fund - Advisor Class | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia International Dividend Income Fund - Advisor Class | Other [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.50%
Columbia International Dividend Income Fund - Institutional Class | Taiwan Semiconductor Manufacturing Co., Ltd. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Columbia International Dividend Income Fund - Institutional Class | Unilever PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional Class | Roche Holding AG, Genusschein Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional Class | Samsung Electronics Co., Ltd. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional Class | SAP SE [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional Class | Shell PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia International Dividend Income Fund - Institutional Class | ORIX Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia International Dividend Income Fund - Institutional Class | Royal Bank of Canada [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia International Dividend Income Fund - Institutional Class | Deutsche Telekom AG, Registered Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia International Dividend Income Fund - Institutional Class | Siemens AG, Registered Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia International Dividend Income Fund - Institutional Class | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	21.20%
Columbia International Dividend Income Fund - Institutional Class | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia International Dividend Income Fund - Institutional Class | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia International Dividend Income Fund - Institutional Class | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Columbia International Dividend Income Fund - Institutional Class | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10%
Columbia International Dividend Income Fund - Institutional Class | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Columbia International Dividend Income Fund - Institutional Class | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia International Dividend Income Fund - Institutional Class | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.90%
Columbia International Dividend Income Fund - Institutional Class | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Columbia International Dividend Income Fund - Institutional Class | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Columbia International Dividend Income Fund - Institutional Class | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Columbia International Dividend Income Fund - Institutional Class | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia International Dividend Income Fund - Institutional Class | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	10.50%
Columbia International Dividend Income Fund - Institutional Class | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Columbia International Dividend Income Fund - Institutional Class | CANADA
Holdings [Line Items]
Percent of Net Asset Value	8.70%
Columbia International Dividend Income Fund - Institutional Class | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	8.10%
Columbia International Dividend Income Fund - Institutional Class | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia International Dividend Income Fund - Institutional Class | IRELAND
Holdings [Line Items]
Percent of Net Asset Value	5%
Columbia International Dividend Income Fund - Institutional Class | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia International Dividend Income Fund - Institutional Class | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia International Dividend Income Fund - Institutional Class | Other [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.50%
Columbia International Dividend Income Fund - Institutional 2 Class | Taiwan Semiconductor Manufacturing Co., Ltd. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Columbia International Dividend Income Fund - Institutional 2 Class | Unilever PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional 2 Class | Roche Holding AG, Genusschein Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional 2 Class | Samsung Electronics Co., Ltd. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional 2 Class | SAP SE [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional 2 Class | Shell PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia International Dividend Income Fund - Institutional 2 Class | ORIX Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia International Dividend Income Fund - Institutional 2 Class | Royal Bank of Canada [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia International Dividend Income Fund - Institutional 2 Class | Deutsche Telekom AG, Registered Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia International Dividend Income Fund - Institutional 2 Class | Siemens AG, Registered Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia International Dividend Income Fund - Institutional 2 Class | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	21.20%
Columbia International Dividend Income Fund - Institutional 2 Class | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia International Dividend Income Fund - Institutional 2 Class | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia International Dividend Income Fund - Institutional 2 Class | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Columbia International Dividend Income Fund - Institutional 2 Class | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10%
Columbia International Dividend Income Fund - Institutional 2 Class | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Columbia International Dividend Income Fund - Institutional 2 Class | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia International Dividend Income Fund - Institutional 2 Class | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.90%
Columbia International Dividend Income Fund - Institutional 2 Class | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Columbia International Dividend Income Fund - Institutional 2 Class | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Columbia International Dividend Income Fund - Institutional 2 Class | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Columbia International Dividend Income Fund - Institutional 2 Class | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia International Dividend Income Fund - Institutional 2 Class | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	10.50%
Columbia International Dividend Income Fund - Institutional 2 Class | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Columbia International Dividend Income Fund - Institutional 2 Class | CANADA
Holdings [Line Items]
Percent of Net Asset Value	8.70%
Columbia International Dividend Income Fund - Institutional 2 Class | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	8.10%
Columbia International Dividend Income Fund - Institutional 2 Class | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia International Dividend Income Fund - Institutional 2 Class | IRELAND
Holdings [Line Items]
Percent of Net Asset Value	5%
Columbia International Dividend Income Fund - Institutional 2 Class | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia International Dividend Income Fund - Institutional 2 Class | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia International Dividend Income Fund - Institutional 2 Class | Other [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.50%
Columbia International Dividend Income Fund - Institutional 3 Class | Taiwan Semiconductor Manufacturing Co., Ltd. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Columbia International Dividend Income Fund - Institutional 3 Class | Unilever PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional 3 Class | Roche Holding AG, Genusschein Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional 3 Class | Samsung Electronics Co., Ltd. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional 3 Class | SAP SE [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia International Dividend Income Fund - Institutional 3 Class | Shell PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia International Dividend Income Fund - Institutional 3 Class | ORIX Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia International Dividend Income Fund - Institutional 3 Class | Royal Bank of Canada [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia International Dividend Income Fund - Institutional 3 Class | Deutsche Telekom AG, Registered Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia International Dividend Income Fund - Institutional 3 Class | Siemens AG, Registered Shares [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia International Dividend Income Fund - Institutional 3 Class | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	21.20%
Columbia International Dividend Income Fund - Institutional 3 Class | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia International Dividend Income Fund - Institutional 3 Class | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia International Dividend Income Fund - Institutional 3 Class | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Columbia International Dividend Income Fund - Institutional 3 Class | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10%
Columbia International Dividend Income Fund - Institutional 3 Class | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Columbia International Dividend Income Fund - Institutional 3 Class | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia International Dividend Income Fund - Institutional 3 Class | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.90%
Columbia International Dividend Income Fund - Institutional 3 Class | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Columbia International Dividend Income Fund - Institutional 3 Class | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Columbia International Dividend Income Fund - Institutional 3 Class | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	14.10%
Columbia International Dividend Income Fund - Institutional 3 Class | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia International Dividend Income Fund - Institutional 3 Class | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	10.50%
Columbia International Dividend Income Fund - Institutional 3 Class | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	9.30%
Columbia International Dividend Income Fund - Institutional 3 Class | CANADA
Holdings [Line Items]
Percent of Net Asset Value	8.70%
Columbia International Dividend Income Fund - Institutional 3 Class | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	8.10%
Columbia International Dividend Income Fund - Institutional 3 Class | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia International Dividend Income Fund - Institutional 3 Class | IRELAND
Holdings [Line Items]
Percent of Net Asset Value	5%
Columbia International Dividend Income Fund - Institutional 3 Class | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia International Dividend Income Fund - Institutional 3 Class | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia International Dividend Income Fund - Institutional 3 Class | Other [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.50%