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Shareholder Report
 6 Months Ended
Aug. 31, 2024
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Columbia Funds Series Trust
Entity Central Index Key 0001097519
Entity Investment Company Type N-1A
Document Period End Date Aug. 31, 2024
Columbia Small Cap Value Fund II (Class A)  
Shareholder Report [Line Items]  
Fund Name Columbia Small Cap Value Fund II
Class Name Class A
Trading Symbol COVAX
Annual or Semi-Annual Statement [Text Block] This
semiannual shareholder report
contains important information about Columbia Small Cap Value Fund II (the Fund) for the period of March 1, 2024 to August 31, 2024.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
columbiathreadneedleus.com/resources/literature
. You can also request more information by contacting us at
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)
ClassCost of a $10,000 investmentCost paid as a percentage of a $10,000 investment
Class A
$
65		1.24
%
Expenses Paid, Amount $ 65
Expense Ratio, Percent 1.24%
Net Assets $ 1,028,095,065
Holdings Count | Holding 101
Investment Company, Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,028,095,065
Total number of portfolio holdings101
Portfolio turnover for the reporting period 41%
Holdings [Text Block]
Graphical Representation of Fund
 
Holdings
The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Top Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%
Columbia Small Cap Value Fund II (Advisory Class)  
Shareholder Report [Line Items]  
Fund Name Columbia Small Cap Value Fund II
Class Name Advisor Class
Trading Symbol CLURX
Annual or Semi-Annual Statement [Text Block] This
semiannual shareholder report
contains important information about Columbia Small Cap Value Fund II (the Fund) for the period of March 1, 2024 to August 31, 2024.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
columbiathreadneedleus.com/resources/literature
. You can also request more information by contacting us at
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)
ClassCost of a $10,000 investmentCost paid as a percentage of a $10,000 investment
Advisor Class
$
52		0.99
%
Expenses Paid, Amount $ 52
Expense Ratio, Percent 0.99%
Net Assets $ 1,028,095,065
Holdings Count | Holding 101
Investment Company, Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,028,095,065
Total number of portfolio holdings101
Portfolio turnover for the reporting period 41%
Holdings [Text Block]
Graphical Representation of Fund
 
Holdings
The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Top
Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top
Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%
Columbia Small Cap Value Fund II (Institutional Class)  
Shareholder Report [Line Items]  
Fund Name Columbia Small Cap Value Fund II
Class Name Institutional Class
Trading Symbol NSVAX
Annual or Semi-Annual Statement [Text Block] This
semiannual shareholder report
contains important information about Columbia Small Cap Value Fund II (the Fund) for the period of March 1, 2024 to August 31, 2024.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
columbiathreadneedleus.com/resources/literature
. You can also request more information by contacting us at
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)
ClassCost of a $10,000 investmentCost paid as a percentage of a $10,000 investment
Institutional Class
$
52		0.99
%
Expenses Paid, Amount $ 52
Expense Ratio, Percent 0.99%
Net Assets $ 1,028,095,065
Holdings Count | Holding 101
Investment Company, Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,028,095,065
Total number of portfolio holdings101
Portfolio turnover for the reporting period 41%
Holdings [Text Block]
Graphical Representation of Fund
 
Holdings
The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Top Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%
Columbia Small Cap Value Fund II (Institutional 2 Class)  
Shareholder Report [Line Items]  
Fund Name Columbia Small Cap Value Fund II
Class Name Institutional 2 Class
Trading Symbol CRRRX
Annual or Semi-Annual Statement [Text Block] This
semiannual shareholder report
contains important information about Columbia Small Cap Value Fund II (the Fund) for the period of March 1, 2024 to August 31, 2024.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
columbiathreadneedleus.com/resources/literature
. You can also request more information by contacting us at
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)
ClassCost of a $10,000 investmentCost paid as a percentage of a $10,000 investment
Institutional 2 Class
$
44		0.84
%
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.84%
Net Assets $ 1,028,095,065
Holdings Count | Holding 101
Investment Company, Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,028,095,065
Total number of portfolio holdings101
Portfolio turnover for the reporting period 41%
Holdings [Text Block]
Graphical Representation of Fund
 
Holdings
The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to
change
.
Top Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%
Columbia Small Cap Value Fund II (Institutional 3 Class)  
Shareholder Report [Line Items]  
Fund Name Columbia Small Cap Value Fund II
Class Name Institutional 3 Class
Trading Symbol CRRYX
Annual or Semi-Annual Statement [Text Block] This
semiannual shareholder report
contains important information about Columbia Small Cap Value Fund II (the Fund) for the period of March 1, 2024 to August 31, 2024.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
columbiathreadneedleus.com/resources/literature
. You can also request more information by contacting us at
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)
ClassCost of a $10,000 investmentCost paid as a percentage of a $10,000 investment
Institutional 3 Class
$
42		0.79
%
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.79%
Net Assets $ 1,028,095,065
Holdings Count | Holding 101
Investment Company, Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,028,095,065
Total number of portfolio holdings101
Portfolio turnover for the reporting period 41%
Holdings [Text Block]
Graphical Representation of Fund
 
Holdings
The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Top Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%
Columbia Small Cap Value Fund II (Class R)  
Shareholder Report [Line Items]  
Fund Name Columbia Small Cap Value Fund II
Class Name Class R
Trading Symbol CCTRX
Annual or Semi-Annual Statement [Text Block] This
semiannual shareholder report
contains important information about Columbia Small Cap Value Fund II (the Fund) for the period of March 1, 2024 to August 31, 2024.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at
columbiathreadneedleus.com/resources/literature
. You can also request more information by contacting us at
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)
ClassCost of a $10,000 investmentCost paid as a percentage of a $10,000 investment
Class R
$
79		1.49
%
Expenses Paid, Amount $ 79
Expense Ratio, Percent 1.49%
Net Assets $ 1,028,095,065
Holdings Count | Holding 101
Investment Company, Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,028,095,065
Total number of portfolio holdings101
Portfolio turnover for the reporting period 41%
Holdings [Text Block]
Graphical Representation of Fund
 
Holdings
The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Top Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Radian Group, Inc.1.8
%
CNX Resources Corp.1.7
%
Matson, Inc.1.7
%
Hancock Whitney Corp.1.7
%
Spire, Inc.1.6
%
Fulton Financial Corp.1.6
%
BankUnited, Inc.1.6
%
Cushman & Wakefield PLC1.5
%
Lazard, Inc.1.5
%
Group 1 Automotive, Inc.1.5
%