v3.25.2
Shareholder Report
 12 Months Ended
May 31, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
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 May 31, 2025
Columbia High Yield Bond Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Columbia High Yield Bond Fund
Class Name Class A
Trading Symbol INEAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Columbia High Yield Bond Fund (the Fund) for the period of June 1, 2024 to May 31, 2025.
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
. 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)
Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment
Class A
$
101		 0.97
%
Expenses Paid, Amount $ 101
Expense Ratio, Percent 0.97%
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
Industry allocation
| The Fund’s largest contributor to relative returns during the period was from its allocation to the building materials industry. Additional contribution during the period came from an allocation to department stores.
Security selection
| Security selection in the support–services sector, with an allocation to a roofing supply business, contributed to relative performance. Additional security selection was most positive in the gas–distribution sector with an allocation to a natural gas-distribution company.
Credit allocation
| Allocations to BB and B rated debt, as well as small allocations to investment-grade debt was most additive to Fund performance.
Top Performance Detractors
Industry allocation
 
I
 
Despite the overall relative positive performance of the Fund, negative returns came from the portfolio’s allocation to the electric generation industry. Portfolio underweights to both the media content and telecom–satellite industries also weighed on the Fund’s relative results.
Security selection
| Security selection in the telecom–wireline integrated industry detracted most, with an allocation to an internet service provider. Additional negative performance for the Fund came from the Real Estate Investment Trust industry, with allocations to an IT and storage company.
Credit allocation
| Allocations to CCC and below rated debt, as well as cash allocations, detracted from the Fund’s relative performance.
Performance Past Does Not Indicate Future [Text] The Fund's past performance is not a good predictor of the Fund's future performance.
Line Graph [Table Text Block] Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns (%) 1 year 5 years 10 years
Class A (excluding sales charges) 8.46 4.88 4.23
Class A (including sales charges) 3.27 3.86 3.72
ICE BofA US Cash Pay High Yield Constrained Index 9.24 5.78 4.92
Bloomberg U.S. Aggregate Bond Index 5.46 (0.90
)
 1.49
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
for more recent performance information.
Net Assets $ 1,355,498,411
Holdings Count | Holding 458
Advisory Fees Paid, Amount $ 8,621,920
Investment Company, Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,355,498,411
Total number of portfolio holdings
 458
Management services fees
(represents 0.63% of Fund average net assets)
$
8,621,920
Portfolio turnover for the reporting period
 45%
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.
Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Top Holdings
Columbia US High Yield ETF 1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		 0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		 0.6
%
HUB International, Ltd.
06/15/2030 7.250%		 0.6
%
DISH Network Corp.
11/15/2027 11.750%		 0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		 0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		 0.6
%
Altice France SA
07/15/2029 5.125%		 0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		 0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		 0.6
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Credit Quality
Graphical Representation - Allocation 2 Chart
Credit Quality Explanation [Text Block] Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Largest Holdings [Text Block]
Top Holdings
Columbia US High Yield ETF 1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		 0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		 0.6
%
HUB International, Ltd.
06/15/2030 7.250%		 0.6
%
DISH Network Corp.
11/15/2027 11.750%		 0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		 0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		 0.6
%
Altice France SA
07/15/2029 5.125%		 0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		 0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		 0.6
%
Columbia High Yield Bond Fund -Class C  
Shareholder Report [Line Items]  
Fund Name Columbia High Yield Bond Fund
Class Name Class C
Trading Symbol APECX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Columbia High Yield Bond Fund (the Fund) for the period of June 1, 2024 to May 31, 2025.
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
. 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 C
$
178		1.72
%
Expenses Paid, Amount $ 178
Expense Ratio, Percent 1.72%
Factors Affecting Performance [Text Block]
Management's Discussion of Fund Performance
The performance of Class C shares for the period presented is shown in the Average Annual Total Returns table.
Top Performance Contributors
Industry allocation
| The Fund’s largest contributor to relative returns during the period was from its allocation to the building materials industry. Additional contribution during the period came from an allocation to department stores.
Security selection
| Security selection in the support–services sector, with an allocation to a roofing supply business, contributed to relative performance. Additional security selection was most positive in the gas–distribution sector with an allocation to a natural gas-distribution company.
Credit allocation
| Allocations to BB and B rated debt, as well as small allocations to investment-grade debt was most additive to Fund performance.
Top Performance Detractors
Industry allocation
 
I
 
Despite the overall relative positive performance of the Fund, negative returns came from the portfolio’s allocation to the electric generation industry. Portfolio underweights to both the media content and telecom–satellite industries also weighed on the Fund’s relative results.
Security selection
| Security selection in the telecom–wireline integrated industry detracted most, with an allocation to an internet service provider. Additional negative performance for the Fund came from the Real Estate Investment Trust industry, with allocations to an IT and storage company.
Credit allocation
| Allocations to CCC and below rated debt, as well as cash allocations, detracted from the Fund’s relative performance.
Performance Past Does Not Indicate Future [Text] The Fund's past performance is not a good predictor of the Fund's future performance.
Line Graph [Table Text Block] Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns (%)1 year5 years10 years
Class C (excluding sales charges)7.674.123.45
Class C (including sales charges)6.67 4.12 3.45
ICE BofA US Cash Pay High Yield Constrained Index9.245.784.92
Bloomberg U.S. Aggregate Bond Index5.46 (0.90
)
1.49
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
for more recent performance information
Net Assets $ 1,355,498,411
Holdings Count | Holding 458
Advisory Fees Paid, Amount $ 8,621,920
Investment Company, Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,355,498,411
Total number of portfolio holdings
458
Management services fees
(represents 0.63% of Fund average net assets)
$
8,621,920
Portfolio turnover for the reporting period
45%
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. Deriva
tives
are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions
, not statements of
f
act
, and are subject to change, including daily.
Top Holdings
Columbia US High Yield ETF1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		0.6
%
HUB International, Ltd.
06/15/2030 7.250%		0.6
%
DISH Network Corp.
11/15/2027 11.750%		0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		0.6
%
Altice France SA
07/15/2029 5.125%		0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		0.6
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Credit Quality
Graphical Representation - Allocation 2 Chart
Credit Quality Explanation [Text Block] Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions
, not statements of
f
act
, and are subject to change, including daily.
Largest Holdings [Text Block]
Top Holdings
Columbia US High Yield ETF1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		0.6
%
HUB International, Ltd.
06/15/2030 7.250%		0.6
%
DISH Network Corp.
11/15/2027 11.750%		0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		0.6
%
Altice France SA
07/15/2029 5.125%		0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		0.6
%
Columbia High Yield Bond Fund - Institutional Class  
Shareholder Report [Line Items]  
Fund Name Columbia High Yield Bond Fund
Class Name Institutional Class
Trading Symbol CHYZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Columbia High Yield Bond Fund (the Fund) for the period of June 1, 2024 to May 31, 2025.
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
. 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
$
75		0.72
%
Expenses Paid, Amount $ 75
Expense Ratio, Percent 0.72%
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
Industry allocation
| The Fund’s largest contributor to relative returns during the period was from its allocation to the building materials industry. Additional contribution during the period came from an allocation to department stores.
Security selection
| Security selection in the support–services sector, with an allocation to a roofing supply business, contributed to relative performance. Additional security selection was most positive in the gas–distribution sector with an allocation to a natural gas-distribution company.
Credit allocation
| Allocations to BB and B rated debt, as well as small allocations to investment-grade debt was most additive to Fund performance.
Top Performance Detractors
Industry allocation
 
I
 
Despite the overall relative positive performance of the Fund, negative returns came from the portfolio’s allocation to the electric generation industry. Portfolio underweights to both the media content and telecom–satellite industries also weighed on the Fund’s relative results.
Security selection
| Security selection in the telecom–wireline integrated industry detracted most, with an allocation to an internet service provider. Additional negative performance for the Fund came from the Real Estate Investment Trust industry, with allocations to an IT and storage company.
Credit allocation
| Allocations to CCC and below rated debt, as well as cash allocations, detracted from the Fund’s relative performance.
Performance Past Does Not Indicate Future [Text] The Fund's past performance is not a good predictor of the Fund's future performance.
Line Graph [Table Text Block] Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns (%)1 year5 years10 years
Institutional Class8.73 5.12 4.48
ICE BofA US Cash Pay High Yield Constrained Index9.245.784.92
Bloomberg U.S. Aggregate Bond Index5.46 (0.90
)
1.49
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
for more recent performance information.
Net Assets $ 1,355,498,411
Holdings Count | Holding 458
Advisory Fees Paid, Amount $ 8,621,920
Investment Company, Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,355,498,411
Total number of portfolio holdings
458
Management services fees
(represents 0.63% of Fund average net assets)
$
8,621,920
Portfolio turnover for the reporting period
45%
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. Derivati
ves
are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating age
ncy, that rat
ing is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Top Holdings
Columbia US High Yield ETF1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		0.6
%
HUB International, Ltd.
06/15/2030 7.250%		0.6
%
DISH Network Corp.
11/15/2027 11.750%		0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		0.6
%
Altice France SA
07/15/2029 5.125%		0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		0.6
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Credit Quality
Graphical Representation - Allocation 2 Chart
Credit Quality Explanation [Text Block] Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating age
ncy, that rat
ing is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Largest Holdings [Text Block]
Top Holdings
Columbia US High Yield ETF1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		0.6
%
HUB International, Ltd.
06/15/2030 7.250%		0.6
%
DISH Network Corp.
11/15/2027 11.750%		0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		0.6
%
Altice France SA
07/15/2029 5.125%		0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		0.6
%
Columbia High Yield Bond Fund - Institutional 2 Class  
Shareholder Report [Line Items]  
Fund Name Columbia High Yield Bond Fund
Class Name Institutional 2 Class
Trading Symbol RSHRX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Columbia High Yield Bond Fund (the Fund) for the period of June 1, 2024 to May 31, 2025.
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
. 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)
Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment
Institutional 2 Class
$
68		 0.65
%
Expenses Paid, Amount $ 68
Expense Ratio, Percent 0.65%
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
Industry allocation
| The Fund’s largest contributor to relative returns during the period was from its allocation to the building materials industry. Additional contribution during the period came from an allocation to department stores.
Security selection
| Security selection in the support–services sector, with an allocation to a roofing supply business, contributed to relative performance. Additional security selection was most positive in the gas–distribution sector with an allocation to a natural gas-distribution company.
Credit allocation
| Allocations to BB and B rated debt, as well as small allocations to investment-grade debt was most additive to Fund performance.
Top Performance Detractors
Industry allocation
 
I
 
Despite the overall relative positive performance of the Fund, negative returns came from the portfolio’s allocation to the electric generation industry. Portfolio underweights to both the media content and telecom–satellite industries also weighed on the Fund’s relative results.
Security selection
| Security selection in the telecom–wireline integrated industry detracted most, with an allocation to an internet service provider. Additional negative performance for the Fund came from the Real Estate Investment Trust industry, with allocations to an IT and storage company.
Credit allocation
| Allocations to CCC and below rated debt, as well as cash allocations, detracted from the Fund’s relative performance.
Performance Past Does Not Indicate Future [Text] The Fund's past performance is not a good predictor of the Fund's future performance.
Line Graph [Table Text Block] Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns (%) 1 year 5 years 10 years
Institutional 2 Class 8.82 5.22 4.57
ICE BofA US Cash Pay High Yield Constrained Index 9.24 5.78 4.92
Bloomberg U.S. Aggregate Bond Index 5.46 (0.90
)
 1.49
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
for more recent performance information.
Net Assets $ 1,355,498,411
Holdings Count | Holding 458
Advisory Fees Paid, Amount $ 8,621,920
Investment Company, Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,355,498,411
Total number of portfolio holdings
 458
Management services fees
(represents 0.63% of Fund average net assets)
$
8,621,920
Portfolio turnover for the reporting period
 45%
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. Derivati
ves
are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Top Holdings
Columbia US High Yield ETF 1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		 0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		 0.6
%
HUB International, Ltd.
06/15/2030 7.250%		 0.6
%
DISH Network Corp.
11/15/2027 11.750%		 0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		 0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		 0.6
%
Altice France SA
07/15/2029 5.125%		 0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		 0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		 0.6
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Credit Quality
Graphical Representation - Allocation 2 Chart
Credit Quality Explanation [Text Block] Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Largest Holdings [Text Block]
Top Holdings
Columbia US High Yield ETF 1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		 0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		 0.6
%
HUB International, Ltd.
06/15/2030 7.250%		 0.6
%
DISH Network Corp.
11/15/2027 11.750%		 0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		 0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		 0.6
%
Altice France SA
07/15/2029 5.125%		 0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		 0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		 0.6
%
Columbia High Yield Bond Fund - Institutional 3 Class  
Shareholder Report [Line Items]  
Fund Name Columbia High Yield Bond Fund
Class Name Institutional 3 Class
Trading Symbol CHYYX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Columbia High Yield Bond Fund (the Fund) for the period of June 1, 2024 to May 31, 2025.
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
. 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)
Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment
Institutional 3 Class
$
62		 0.60
%
Expenses Paid, Amount $ 62
Expense Ratio, Percent 0.60%
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
Industry allocation
| The Fund’s largest contributor to relative returns during the period was from its allocation to the building materials industry. Additional contribution during the period came from an allocation to department stores.
Security selection
| Security selection in the support–services sector, with an allocation to a roofing supply business, contributed to relative performance. Additional security selection was most positive in the gas–distribution sector with an allocation to a natural gas-distribution company.
Credit allocation
| Allocations to BB and B rated debt, as well as small allocations to investment-grade debt was most additive to Fund performance.
Top Performance Detractors
Industry allocation
 
I
 
Despite the overall relative positive performance of the Fund, negative returns came from the portfolio’s allocation to the electric generation industry. Portfolio underweights to both the media content and telecom–satellite industries also weighed on the Fund’s relative results.
Security selection
| Security selection in the telecom–wireline integrated industry detracted most, with an allocation to an internet service provider. Additional negative performance for the Fund came from the Real Estate Investment Trust industry, with allocations to an IT and storage company.
Credit allocation
| Allocations to CCC and below rated debt, as well as cash allocations, detracted from the Fund’s relative performance.
Performance Past Does Not Indicate Future [Text] The Fund's past performance is not a good predictor of the Fund's future performance.
Line Graph [Table Text Block] Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns (%) 1 year 5 years 10 years
Institutional 3 Class 8.87 5.31 4.60
ICE BofA US Cash Pay High Yield Constrained Index 9.24 5.78 4.92
Bloomberg U.S. Aggregate Bond Index 5.46 (0.90
)
 1.49
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
for more recent performance information.
Net Assets $ 1,355,498,411
Holdings Count | Holding 458
Advisory Fees Paid, Amount $ 8,621,920
Investment Company, Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,355,498,411
Total number of portfolio holdings
 458
Management services fees
(represents 0.63% of Fund average net assets)
$
8,621,920
Portfolio turnover for the reporting period
 45%
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. Deriva
tive
s are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Top Holdings
Columbia US High Yield ETF 1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		 0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		 0.6
%
HUB International, Ltd.
06/15/2030 7.250%		 0.6
%
DISH Network Corp.
11/15/2027 11.750%		 0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		 0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		 0.6
%
Altice France SA
07/15/2029 5.125%		 0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		 0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		 0.6
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Credit Quality
Graphical Representation - Allocation 2 Chart
Credit Quality Explanation [Text Block] Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Largest Holdings [Text Block]
Top Holdings
Columbia US High Yield ETF 1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		 0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		 0.6
%
HUB International, Ltd.
06/15/2030 7.250%		 0.6
%
DISH Network Corp.
11/15/2027 11.750%		 0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		 0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		 0.6
%
Altice France SA
07/15/2029 5.125%		 0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		 0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		 0.6
%
Columbia High Yield Bond Fund - Class R  
Shareholder Report [Line Items]  
Fund Name Columbia High Yield Bond Fund
Class Name Class R
Trading Symbol CHBRX
Annual or Semi-Annual Statement [Text Block] This
annual shareholder report
contains important information about Columbia High Yield Bond Fund (the Fund) for the period of June 1, 2024 to May 31, 2025.
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
. 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)
Class Cost of a $10,000 investment Cost paid as a percentage of a $10,000 investment
Class R
$
127		 1.22
%
Expenses Paid, Amount $ 127
Expense Ratio, Percent 1.22%
Factors Affecting Performance [Text Block]
Management's Discussion of Fund Performance
The performance of Class R shares for the period presented is shown in the Average Annual Total Returns t
able.
Top Performance Contributors
Industry allocation
| The Fund’s largest contributor to relative returns during the period was from its allocation to the building materials industry. Additional contribution during the period came from an allocation to department stores.
Security selection
| Security selection in the support–services sector, with an allocation to a roofing supply business, contributed to relative performance. Additional security selection was most positive in the gas–distribution sector with an allocation to a natural gas-distribution company.
Credit allocation
| Allocations to BB and B rated debt, as well as small allocations to investment-grade debt was most additive to Fund performance.
Top Performance Detractors
Industry allocation
 
I
 
Despite the overall relative positive performance of the Fund, negative returns came from the portfolio’s allocation to the electric generation industry. Portfolio underweights to both the media content and telecom–satellite industries also weighed on the Fund’s relative results.
Security selection
| Security selection in the telecom–wireline integrated industry detracted most, with an allocation to an internet service provider. Additional negative performance for the Fund came from the Real Estate Investment Trust industry, with allocations to an IT and storage company.
Credit allocation
| Allocations to CCC and below rated debt, as well as cash allocations, detracted from the Fund’s relative performance.
Performance Past Does Not Indicate Future [Text] The Fund's past performance is not a good predictor of the Fund's future performance.
Line Graph [Table Text Block] Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns (%) 1 year 5 years 10 years
Class R 8.18 4.60 3.96
ICE BofA US Cash Pay High Yield Constrained Index 9.24 5.78 4.92
Bloomberg U.S. Aggregate Bond Index 5.46 (0.90
)
 1.49
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
for more recent performance information.
Net Assets $ 1,355,498,411
Holdings Count | Holding 458
Advisory Fees Paid, Amount $ 8,621,920
Investment Company, Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,355,498,411
Total number of portfolio holdings
 458
Management services fees
(represents 0.63% of Fund average net assets)
$
8,621,920
Portfolio turnover for the reporting period
 45%
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.
Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Top Holdings
Columbia US High Yield ETF 1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		 0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		 0.6
%
HUB International, Ltd.
06/15/2030 7.250%		 0.6
%
DISH Network Corp.
11/15/2027 11.750%		 0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		 0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		 0.6
%
Altice France SA
07/15/2029 5.125%		 0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		 0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		 0.6
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Credit Quality
Graphical Representation - Allocation 2 Chart
Credit Quality Explanation [Text Block] Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the average of the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Largest Holdings [Text Block]
Top Holdings
Columbia US High Yield ETF 1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		 0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		 0.6
%
HUB International, Ltd.
06/15/2030 7.250%		 0.6
%
DISH Network Corp.
11/15/2027 11.750%		 0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		 0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		 0.6
%
Altice France SA
07/15/2029 5.125%		 0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		 0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		 0.6
%
Columbia High Yield Bond Fund - Class S  
Shareholder Report [Line Items]  
Fund Name Columbia High Yield Bond Fund
Class Name Class S
Trading Symbol CHYEX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Columbia High Yield Bond Fund (the Fund) for the period of October 2, 2024 to May 31, 2025.
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
. 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 S
$
48
(a)
0.72
%
(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 $ 48 [1]
Expense Ratio, Percent 0.72% [2]
Factors Affecting Performance [Text Block]
Management's Discussion of Fund Performance
The performance of Class S shares for the period presented is shown in the Average Annual Total Returns table.
Top Performance Contributors
Industry allocation
| The Fund’s largest contributor to relative returns during the period was from its allocation to the building materials industry. Additional contribution during the period came from an allocation to department stores.
Security selection
| Security selection in the support–services sector, with an allocation to a roofing supply business, contributed to relative performance. Additional security selection was most positive in the gas–distribution sector with an allocation to a natural gas-distribution company.
Credit allocation
| Allocations to BB and B rated debt, as well as small allocations to investment-grade debt was most additive to Fund performance.
Top Performance Detractors
Industry allocation
 
I
 
Despite the overall relative positive performance of the Fund, negative returns came from the portfolio’s allocation to the electric generation industry. Portfolio underweights to both the media content and telecom–satellite industries also weighed on the Fund’s relative results.
Security selection
| Security selection in the telecom–wireline integrated industry detracted most, with an allocation to an internet service provider. Additional negative performance for the Fund came from the Real Estate Investment Trust industry, with allocations to an IT and storage company.
Credit allocation
| Allocations to CCC and below rated debt, as well as cash allocations, detracted from the Fund’s relative performance.
Performance Past Does Not Indicate Future [Text] The Fund's past performance is not a good predictor of the Fund's future performance.
Line Graph [Table Text Block] Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns (%)1 year5 years10 years
Class S (a)8.634.914.24
ICE BofA US Cash Pay High Yield Constrained Index9.245.784.92
Bloomberg U.S. Aggregate Bond Index5.46 (0.90
)
1.49
(a)
The returns shown for periods prior to October 2, 2024 (including Since Fund Inception returns, if shown) include the returns of Class A. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit
columbiathreadneedleus.com/investment-products/mutual-funds/appended-performance
for more information.
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
for more recent performance information.
Net Assets $ 1,355,498,411
Holdings Count | Holding 458
Advisory Fees Paid, Amount $ 8,621,920
Investment Company, Portfolio Turnover 45.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,355,498,411
Total number of portfolio holdings
458
Management services fees
(represents 0.63% of Fund average net assets)
$
8,621,920
Portfolio turnover for the reporting period
45%
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.
Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the ave
rage of
the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Top Holdings
Columbia US High Yield ETF1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		0.6
%
HUB International, Ltd.
06/15/2030 7.250%		0.6
%
DISH Network Corp.
11/15/2027 11.750%		0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		0.6
%
Altice France SA
07/15/2029 5.125%		0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		0.6
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Credit Quality
Graphical Representation - Allocation 2 Chart
Credit Quality Explanation [Text Block] Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the average rating of Moody’s Ratings, S&P and Fitch. When ratings are available from only two rating agencies, the ave
rage of
the two ratings is used. When a rating is available from only one rating agency, that rating is used. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Largest Holdings [Text Block]
Top Holdings
Columbia US High Yield ETF1.0
%
Alliant Holdings Intermediate LLC/Co-Issuer
10/15/2027 6.750%		0.7
%
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
04/20/2029 5.750%		0.6
%
HUB International, Ltd.
06/15/2030 7.250%		0.6
%
DISH Network Corp.
11/15/2027 11.750%		0.6
%
CCO Holdings LLC/Capital Corp.
03/01/2030 4.750%		0.6
%
Cloud Software Group, Inc.
09/30/2029 9.000%		0.6
%
Altice France SA
07/15/2029 5.125%		0.6
%
BroadStreet Partners, Inc.
04/15/2029 5.875%		0.6
%
ZoomInfo Technologies LLC/Finance Corp.
02/01/2029 3.875%		0.6
%
[1] 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.
[2] Annualized.