v3.25.2
Shareholder Report, Line Graph (Details) - USD ($)
 12 Months Ended 24 Months Ended 36 Months Ended 48 Months Ended 60 Months Ended 72 Months Ended 84 Months Ended 96 Months Ended 108 Months Ended 120 Months Ended 132 Months Ended
Apr. 30, 2025
Apr. 30, 2015
Apr. 30, 2016
Apr. 30, 2017
Apr. 30, 2018
Apr. 30, 2019
Apr. 30, 2020
Apr. 30, 2021
Apr. 30, 2022
Apr. 30, 2023
Apr. 30, 2024
Apr. 30, 2025
Columbia Small Cap Value Fund I - Class A                        
Account Value [Line Items]                        
Line Graph and Table Measure Name Class A (including sales charges)                      
Accumulated Value   $ 9,424 $ 9,179 $ 11,566 $ 12,727 $ 12,424 $ 9,481 $ 17,473 $ 16,435 $ 16,287 $ 19,273 $ 19,077
Columbia Small Cap Value Fund I - Class C                        
Account Value [Line Items]                        
Line Graph and Table Measure Name Class C (including sales charges)                      
Accumulated Value   10,000 9,668 12,090 13,207 12,791 9,690 17,723 16,543 16,276 19,109 18,772
Columbia Small Cap Value Fund I - Institutional Class                        
Account Value [Line Items]                        
Line Graph and Table Measure Name Institutional Class                      
Accumulated Value   10,000 9,766 12,337 13,610 13,316 10,189 18,821 17,749 17,635 20,915 20,755
Columbia Small Cap Value Fund I - Institutional 2 Class                        
Account Value [Line Items]                        
Line Graph and Table Measure Name Institutional 2 Class                      
Accumulated Value   10,000 9,781 12,373 13,667 13,393 10,260 18,977 17,914 17,809 21,145 21,003
Columbia Small Cap Value Fund I - Institutional 3 Class                        
Account Value [Line Items]                        
Line Graph and Table Measure Name Institutional 3 Class                      
Accumulated Value   10,000 9,787 12,387 13,688 13,417 10,286 19,032 17,975 17,880 21,244 21,110
Columbia Small Cap Value Fund I - Class R                        
Account Value [Line Items]                        
Line Graph and Table Measure Name Class R                      
Accumulated Value   10,000 9,717 12,216 13,409 13,051 9,936 18,266 17,139 16,943 19,995 19,745
Columbia Small Cap Value Fund I - Class S                        
Account Value [Line Items]                        
Line Graph and Table Measure Name Class S                      
Accumulated Value   10,000 9,740 12,273 13,505 13,183 10,061 18,541 17,439 17,282 20,451 20,272
Russell 3000 Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name Russell 3000®Index                      
Accumulated Value   10,000 9,982 11,837 13,382 15,079 14,922 22,520 21,819 22,146 27,085 30,174
Russell 2000 Value Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name Russell 2000® Value Index                      
Accumulated Value   $ 10,000 $ 9,629 $ 12,246 $ 13,046 $ 13,332 $ 10,153 $ 18,170 $ 16,973 $ 15,618 $ 17,809 $ 17,687