v3.25.1
Shareholder Report
 6 Months Ended
Feb. 28, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Columbia Funds Series Trust II
Entity Central Index Key 0001352280
Entity Investment Company Type N-1A
Document Period End Date Feb. 28, 2025
Columbia Integrated Small Cap Growth Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Columbia Integrated Small Cap Growth Fund
Class Name Class A
Trading Symbol ISGDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Columbia Integrated Small Cap Growth Fund (the Fund) for the period of September 1, 2024 to February 28, 2025.
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
$
62		1.21
%
(a)
(a)
Annualized.
Expenses Paid, Amount $ 62
Expense Ratio, Percent 1.21% [1]
Net Assets $ 22,899,988
Holdings Count | Holding 142
Investment Company, Portfolio Turnover 38.00%
Additional Fund Statistics [Text Block]
Key Fund S
tatis
tics
Fund net assets
$
22,899,988
Total number of portfolio holdings142
Portfolio turnover for the reporting period38%
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
Insmed, Inc.2.5
%
Carpenter Technology Corp.2.1
%
CommVault Systems, Inc.1.8
%
Legalzoom.com, Inc.1.7
%
Palomar Holdings, Inc.1.7
%
Credo Technology Group Holding Ltd.1.6
%
AxoGen, Inc.1.6
%
Upwork, Inc.1.5
%
Primoris Services Corp.1.5
%
Freshworks, Inc., Class A1.5
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Insmed, Inc.2.5
%
Carpenter Technology Corp.2.1
%
CommVault Systems, Inc.1.8
%
Legalzoom.com, Inc.1.7
%
Palomar Holdings, Inc.1.7
%
Credo Technology Group Holding Ltd.1.6
%
AxoGen, Inc.1.6
%
Upwork, Inc.1.5
%
Primoris Services Corp.1.5
%
Freshworks, Inc., Class A1.5
%
Columbia Integrated Small Cap Growth Fund - Institutional Class  
Shareholder Report [Line Items]  
Fund Name Columbia Integrated Small Cap Growth Fund
Class Name Institutional Class
Trading Symbol ISGNX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Columbia Integrated Small Cap Growth Fund (the Fund) for the period of September 1, 2024 to February 28, 2025.
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 pe
rcen
tage of a $10,000 investment
Institutional Class
$
51		0.99
%
(a)
(a)
Annualized.
Expenses Paid, Amount $ 51
Expense Ratio, Percent 0.99% [1]
Net Assets $ 22,899,988
Holdings Count | Holding 142
Investment Company, Portfolio Turnover 38.00%
Additional Fund Statistics [Text Block]
Key Fund Stati
stics
Fund net assets
$
22,899,988
Total number of portfolio holdings142
Portfolio turnover for the reporting period38%
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
Insmed, Inc.2.5
%
Carpenter Technology Corp.2.1
%
CommVault Systems, Inc.1.8
%
Legalzoom.com, Inc.1.7
%
Palomar Holdings, Inc.1.7
%
Credo Technology Group Holding Ltd.1.6
%
AxoGen, Inc.1.6
%
Upwork, Inc.1.5
%
Primoris Services Corp.1.5
%
Freshworks, Inc., Class A1.5
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Insmed, Inc.2.5
%
Carpenter Technology Corp.2.1
%
CommVault Systems, Inc.1.8
%
Legalzoom.com, Inc.1.7
%
Palomar Holdings, Inc.1.7
%
Credo Technology Group Holding Ltd.1.6
%
AxoGen, Inc.1.6
%
Upwork, Inc.1.5
%
Primoris Services Corp.1.5
%
Freshworks, Inc., Class A1.5
%
[1] Annualized.