XML 35 R2.htm IDEA: XBRL DOCUMENT v3.24.3
Shareholder Report
 12 Months Ended
Jul. 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 Jul. 31, 2024
Columbia Ultra Short Term Bond Fund Class A  
Shareholder Report [Line Items]  
Fund Name Columbia Ultra Short Term Bond Fund
Class Name Class A
Trading Symbol CUSOX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Columbia Ultra Short Term Bond Fund (the Fund) for the period of August 1, 2023 to July 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
. 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
$
46		0.45
%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.45%
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
Allocation and Security selection
| Positive contributions to the Fund’s performance relative to the benchmark were driven by overweight exposure to credit-based sectors and security selection.
Mortgage-backed securities
| Exposure to mortgage-backed securities proved beneficial, led primarily by holdings of non-agency mortgage-backed securities, as housing fundamentals remained strong, U.S. consumers remained in relatively good financial health and inflationary pressures continued to ease.
Asset-backed securities
| Positioning in asset-backed securities was additive, highlighted by holdings of fixed auto and fixed equipment and other fixed asset-backed securities.
Investment-grade corporates
| Exposure to investment-grade corporates, specifically industrial and financial holdings, proved beneficial over the period.
Top Performance Detractors
Duration and Yield-curve positioning
| The Fund’s yield-curve positioning detracted from relative performance. Specifically, the Fund was positioned neutral to the benchmark with a slight underweight to the very front end of the curve in relation to the benchmark. Throughout the period, most U.S. Treasury yields moved higher while yields within the 4-month to 2-year range decreased.
Performance Past Does Not Indicate Future [Text] Past performance does not guarantee future performance.
Line Graph [Table Text Block]
Fund Performance
The following shows the change in value of a hypothetical $10,000 investment in Class A shares of the Fund during the stated time period.
Growth of $10,000
Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns (%)1 year5 years10 years
Class A
(a),(b)
6.302.511.77
Bloomberg U.S. Short-Term Government/Corporate Index5.59 2.25 1.70
Bloomberg U.S. Aggregate Bond Index5.10 0.19 1.61
(a)
The returns shown for periods prior to February 20, 2019 (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of Institutional 3 Class. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit
columbiathreadneedleus.com/investor/investment-products/mutual-funds/appended-performance
for more information.
(b)
Effective August 1, 2024, the Fund compares its performance to the Bloomberg U.S. Aggregate Bond
Index
, a broad-based performance index that meets new regulatory requirements. The Fund’s performance is also compared to its prior benchmark, which more closely represents the market sectors and/or asset classes in which the Fund primarily invests.
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 $ 1,046,617,355
Holdings Count | Holding 234
Advisory Fees Paid, Amount $ 2,359,256
Investment Company, Portfolio Turnover 81.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,046,617,355
Total number of portfolio holdings234
Management services fees
(represents 0.21% of Fund average net assets)
$
2,359,256
Portfolio turnover for the reporting period 81%
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 middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's, S&P and Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that w
ould o
therwise be not rated. 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
VCAT LLC
08/25/2051 1.868%		1.5
%
Santander Drive Auto Receivables Trust
04/17/2028 5.250%		1.5
%
Carmax Auto Owner Trust
05/15/2028 5.280%		1.4
%
Verizon Master Trust
04/13/2028 4.890%		1.4
%
Carvana Auto Receivables Trust
04/12/2027 5.760%		1.3
%
Carvana Auto Receivables Trust
11/10/2027 5.630%		1.2
%
Towd Point Mortgage Trust
03/25/2062 3.612%		1.1
%
Verizon Master Trust
07/20/2028 1.530%		1.1
%
VCAT Asset Securitization LLC
09/25/2051 1.917%		1.1
%
Enterprise Fleet Financing LLC
08/20/2027 1.220%		1.1
%
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 middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's, S&P and Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that w
ould o
therwise be not rated. 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
VCAT LLC
08/25/2051 1.868%		1.5
%
Santander Drive Auto Receivables Trust
04/17/2028 5.250%		1.5
%
Carmax Auto Owner Trust
05/15/2028 5.280%		1.4
%
Verizon Master Trust
04/13/2028 4.890%		1.4
%
Carvana Auto Receivables Trust
04/12/2027 5.760%		1.3
%
Carvana Auto Receivables Trust
11/10/2027 5.630%		1.2
%
Towd Point Mortgage Trust
03/25/2062 3.612%		1.1
%
Verizon Master Trust
07/20/2028 1.530%		1.1
%
VCAT Asset Securitization LLC
09/25/2051 1.917%		1.1
%
Enterprise Fleet Financing LLC
08/20/2027 1.220%		1.1
%
Columbia Ultra Short Term Bond Fund Advisor Class  
Shareholder Report [Line Items]  
Fund Name Columbia Ultra Short Term Bond Fund
Class Name Advisor Class
Trading Symbol CUSHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Columbia Ultra Short Term Bond Fund (the Fund) for the period of August 1, 2023 to July 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
. 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
$
31		0.30
%
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.30%
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
Allocation and Security selection
| Positive contributions to the Fund’s performance relative to the benchmark were driven by overweight exposure to credit-based sectors and security selection.
Mortgage-backed securities
| Exposure to mortgage-backed securities proved beneficial, led primarily by holdings of non-agency mortgage-backed securities, as housing fundamentals remained strong, U.S. consumers remained in relatively good financial health and inflationary pressures continued to ease.
Asset-backed securities
| Positioning in asset-backed securities was additive, highlighted by holdings of fixed auto and fixed equipment and other fixed asset-backed securities.
Investment-grade corporates
| Exposure to investment-grade corporates, specifically industrial and financial holdings, proved beneficial over the period.
Top Performance Detractors
Duration and Yield-curve positioning
| The Fund’s yield-curve positioning detracted from relative performance. Specifically, the Fund was positioned neutral to the benchmark with a slight underweight to the very front end of the curve in relation to the benchmark. Throughout the period, most U.S. Treasury yields moved higher while yields within the 4-month to 2-year range decreased.
Performance Past Does Not Indicate Future [Text] Past performance does not guarantee future performance.
Line Graph [Table Text Block]
Fund Performance
The following shows the change in value of a hypothetical $10,000 investment in Advisor Class shares of the Fund during the stated time period.
Growth of $10,000
Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns (%)1 year5 years10 years
Advisor Class
(a),(b)
6.452.661.93
Bloomberg U.S. Short-Term Government/Corporate Index5.592.251.70
Bloomberg U.S. Aggregate Bond Index5.100.191.61
(a)
The returns shown for periods prior to December 3, 2018 (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of Institutional 3 Class. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit
columbiathreadneedleus.com/investor/investment-products/mutual-funds/appended-performance
for more information.
(b)
Effective August 1, 2024, the Fund compares its performance to the Bloomberg U.S. Aggregate Bond Index, a broad-based performance index that meets new regulatory requirements. The Fund’s performance is also compared to its prior benchmark, which more closely represents the market
sectors
and/or asset classes in which the Fund primarily invests.
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 $ 1,046,617,355
Holdings Count | Holding 234
Advisory Fees Paid, Amount $ 2,359,256
Investment Company, Portfolio Turnover 81.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,046,617,355
Total number of portfolio holdings234
Management services fees
(represents 0.21% of Fund average net assets)
$
2,359,256
Portfolio turnover for the reporting period 81%
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 middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's,
S&
P and Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied
to
those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating
age
nc
y
are subjective opinions, not statements of fact, and are subject to change, including daily.
Top Holdings
VCAT LLC
08/25/2051 1.868%		1.5
%
Santander Drive Auto Receivables Trust
04/17/2028 5.250%		1.5
%
Carmax Auto Owner Trust
05/15/2028 5.280%		1.4
%
Verizon Master Trust
04/13/2028 4.890%		1.4
%
Carvana Auto Receivables Trust
04/12/2027 5.760%		1.3
%
Carvana Auto Receivables Trust
11/10/2027 5.630%		1.2
%
Towd Point Mortgage Trust
03/25/2062 3.612%		1.1
%
Verizon Master Trust
07/20/2028 1.530%		1.1
%
VCAT Asset Securitization LLC
09/25/2051 1.917%		1.1
%
Enterprise Fleet Financing LLC
08/20/2027 1.220%		1.1
%
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 middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's,
S&
P and Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied
to
those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating
age
nc
y
are subjective opinions, not statements of fact, and are subject to change, including daily.
Largest Holdings [Text Block]
Top Holdings
VCAT LLC
08/25/2051 1.868%		1.5
%
Santander Drive Auto Receivables Trust
04/17/2028 5.250%		1.5
%
Carmax Auto Owner Trust
05/15/2028 5.280%		1.4
%
Verizon Master Trust
04/13/2028 4.890%		1.4
%
Carvana Auto Receivables Trust
04/12/2027 5.760%		1.3
%
Carvana Auto Receivables Trust
11/10/2027 5.630%		1.2
%
Towd Point Mortgage Trust
03/25/2062 3.612%		1.1
%
Verizon Master Trust
07/20/2028 1.530%		1.1
%
VCAT Asset Securitization LLC
09/25/2051 1.917%		1.1
%
Enterprise Fleet Financing LLC
08/20/2027 1.220%		1.1
%
Columbia Ultra Short Term Bond Fund Institutional Class  
Shareholder Report [Line Items]  
Fund Name Columbia Ultra Short Term Bond Fund
Class Name Institutional Class
Trading Symbol CUSBX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Columbia Ultra Short Term Bond Fund (the Fund) for the period of August 1, 2023 to July 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
. 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
$
31		0.30
%
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.30%
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
Allocation and Security selection
| Positive contributions to the Fund’s performance relative to the benchmark were driven by overweight exposure to credit-based sectors and security selection.
Mortgage-backed securities
| Exposure to mortgage-backed securities proved beneficial, led primarily by holdings of non-agency mortgage-backed securities, as housing fundamentals remained strong, U.S. consumers remained in relatively good financial health and inflationary pressures continued to ease.
Asset-backed securities
| Positioning in asset-backed securities was additive, highlighted by holdings of fixed auto and fixed equipment and other fixed asset-backed securities.
Investment-grade corporates
| Exposure to investment-grade corporates, specifically industrial and financial holdings, proved beneficial over the period.
Top Performance Detractors
Duration and Yield-curve positioning
| The Fund’s yield-curve positioning detracted from relative performance. Specifically, the Fund was positioned neutral to the benchmark with a slight underweight to the very front end of the curve in relation to the benchmark. Throughout the period, most U.S. Treasury yields moved higher while yields within the 4-month to 2-year range decreased.
Performance Past Does Not Indicate Future [Text] Past performance does not guarantee future performance.
Line Graph [Table Text Block]
Growth of $10,000
Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns (%)1 year5 years10 years
Institutional Class
(a),(b)
6.452.661.94
Bloomberg U.S. Short-Term Government/Corporate Index5.592.251.70
Bloomberg U.S. Aggregate Bond Index5.100.191.61
(a)
The returns shown for periods prior to December 3, 2018 (including returns for the Life of the Fund, if shown, which are since Fund inception) include the returns of Institutional 3 Class. These returns are adjusted to reflect any higher class-related operating expenses of the newer share classes, as applicable. Please visit
columbiathreadneedleus.com/investor/investment-products/mutual-funds/appended-performance
for more information.
(b)
Effective August 1, 2024, the Fund compares its performance to the Bloomberg U.S. Aggregate Bond Index, a broad-based performance index that meets new regulatory requirements. The Fund’s performance is also compared to its prior benchmark, which more closely represents the market sectors and/or asset classes in which the Fund primarily invests.
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 $ 1,046,617,355
Holdings Count | Holding 234
Advisory Fees Paid, Amount $ 2,359,256
Investment Company, Portfolio Turnover 81.00%
Additional Fund Statistics [Text Block]
Key Fund
Statistics
Fund net assets
$
1,046,617,355
Total number of portfolio holdings234
Management services fees
(represents 0.21% of Fund average net assets)
$
2,359,256
Portfolio turnover for the reporting period 81%
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 middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's, S&P and Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings
assigned
by a ra
ting
agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Top Holdings
VCAT LLC
08/25/2051 1.868%		1.5
%
Santander Drive Auto Receivables Trust
04/17/2028 5.250%		1.5
%
Carmax Auto Owner Trust
05/15/2028 5.280%		1.4
%
Verizon Master Trust
04/13/2028 4.890%		1.4
%
Carvana Auto Receivables Trust
04/12/2027 5.760%		1.3
%
Carvana Auto Receivables Trust
11/10/2027 5.630%		1.2
%
Towd Point Mortgage Trust
03/25/2062 3.612%		1.1
%
Verizon Master Trust
07/20/2028 1.530%		1.1
%
VCAT Asset Securitization LLC
09/25/2051 1.917%		1.1
%
Enterprise Fleet Financing LLC
08/20/2027 1.220%		1.1
%
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 middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's, S&P and Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings
assigned
by a ra
ting
agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Largest Holdings [Text Block]
Top Holdings
VCAT LLC
08/25/2051 1.868%		1.5
%
Santander Drive Auto Receivables Trust
04/17/2028 5.250%		1.5
%
Carmax Auto Owner Trust
05/15/2028 5.280%		1.4
%
Verizon Master Trust
04/13/2028 4.890%		1.4
%
Carvana Auto Receivables Trust
04/12/2027 5.760%		1.3
%
Carvana Auto Receivables Trust
11/10/2027 5.630%		1.2
%
Towd Point Mortgage Trust
03/25/2062 3.612%		1.1
%
Verizon Master Trust
07/20/2028 1.530%		1.1
%
VCAT Asset Securitization LLC
09/25/2051 1.917%		1.1
%
Enterprise Fleet Financing LLC
08/20/2027 1.220%		1.1
%
Columbia Ultra Short Term Bond Fund Institutional 3 Class  
Shareholder Report [Line Items]  
Fund Name Columbia Ultra Short Term Bond Fund
Class Name Institutional 3 Class
Trading Symbol CMGUX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Columbia Ultra Short Term Bond Fund (the Fund) for the period of August 1, 2023 to July 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
. 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
$
25		0.24
%
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.24%
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
Allocation and Security selection
| Positive contributions to the Fund’s performance relative to the benchmark were driven by overweight exposure to credit-based sectors and security selection.
Mortgage-backed securities
| Exposure to mortgage-backed securities proved beneficial, led primarily by holdings of non-agency mortgage-backed securities, as housing fundamentals remained strong, U.S. consumers remained in relatively good financial health and inflationary pressures continued to ease.
Asset-backed securities
| Positioning in asset-backed securities was additive, highlighted by holdings of fixed auto and fixed equipment and other fixed asset-backed securities.
Investment-grade corporates
| Exposure to investment-grade corporates, specifically industrial and financial holdings, proved beneficial over the period.
Top Performance Detractors
Duration and Yield-curve positioning
| The Fund’s yield-curve positioning detracted from relative performance. Specifically, the Fund was positioned neutral to the benchmark with a slight underweight to the very front end of the curve in relation to the benchmark. Throughout the period, most U.S. Treasury yields moved higher while yields within the 4-month to 2-year range decreased.
Performance Past Does Not Indicate Future [Text] Past performance does not guarantee future performance.
Line Graph [Table Text Block]
Growth of $10,000
Fund Performance - Growth of 10K
Average Annual Return [Table Text Block]
Average Annual Total Returns (%)1 year5 years10 years
Institutional 3 Class
(a)
6.402.712.01
Bloomberg U.S. Short-Term Government/Corporate Index5.592.251.70
Bloomberg U.S. Aggregate Bond Index5.100.191.61
(a)
Effective August 1, 2024, the Fund compares its performance to the Bloomberg U.S. Aggregate Bond Index, a
broad
-based performance index that meets new regulatory requirements. The Fund’s performance is also compared to its prior benchmark, which more closely represents the market sectors and/or asset classes in which the Fund primarily invests.
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 $ 1,046,617,355
Holdings Count | Holding 234
Advisory Fees Paid, Amount $ 2,359,256
Investment Company, Portfolio Turnover 81.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
1,046,617,355
Total number of portfolio holdings234
Management services fees
(represents 0.21% of Fund average net assets)
$
2,359,256
Portfolio turnover for the reporting period 81%
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 middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are avai
lable
from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's, S&P and Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. 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
VCAT LLC
08/25/2051 1.868%		1.5
%
Santander Drive Auto Receivables Trust
04/17/2028 5.250%		1.5
%
Carmax Auto Owner Trust
05/15/2028 5.280%		1.4
%
Verizon Master Trust
04/13/2028 4.890%		1.4
%
Carvana Auto Receivables Trust
04/12/2027 5.760%		1.3
%
Carvana Auto Receivables Trust
11/10/2027 5.630%		1.2
%
Towd Point Mortgage Trust
03/25/2062 3.612%		1.1
%
Verizon Master Trust
07/20/2028 1.530%		1.1
%
VCAT Asset Securitization LLC
09/25/2051 1.917%		1.1
%
Enterprise Fleet Financing LLC
08/20/2027 1.220%		1.1
%
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 middle rating of Moody’s, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are avai
lable
from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's, S&P and Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. 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
VCAT LLC
08/25/2051 1.868%		1.5
%
Santander Drive Auto Receivables Trust
04/17/2028 5.250%		1.5
%
Carmax Auto Owner Trust
05/15/2028 5.280%		1.4
%
Verizon Master Trust
04/13/2028 4.890%		1.4
%
Carvana Auto Receivables Trust
04/12/2027 5.760%		1.3
%
Carvana Auto Receivables Trust
11/10/2027 5.630%		1.2
%
Towd Point Mortgage Trust
03/25/2062 3.612%		1.1
%
Verizon Master Trust
07/20/2028 1.530%		1.1
%
VCAT Asset Securitization LLC
09/25/2051 1.917%		1.1
%
Enterprise Fleet Financing LLC
08/20/2027 1.220%		1.1
%