v3.26.1
S000012102 [Member] Expense Example - Columbia Small Cap Value Discovery Fund
Apr. 30, 2026
USD ($)
Columbia Small Cap Value Discovery Fund Institutional 2 Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 88
Expense Example, with Redemption, 3 Years 279
Expense Example, with Redemption, 5 Years 486
Expense Example, with Redemption, 10 Years 1,082
Columbia Small Cap Value Discovery Fund Class S  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 97
Expense Example, with Redemption, 3 Years 307
Expense Example, with Redemption, 5 Years 534
Expense Example, with Redemption, 10 Years 1,188
Columbia Small Cap Value Discovery Fund Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 690
Expense Example, with Redemption, 3 Years 938
Expense Example, with Redemption, 5 Years 1,205
Expense Example, with Redemption, 10 Years 1,966
Columbia Small Cap Value Discovery Fund Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 298
Expense Example, with Redemption, 3 Years 616
Expense Example, with Redemption, 5 Years 1,061
Expense Example, with Redemption, 10 Years 2,100
Columbia Small Cap Value Discovery Fund Institutional Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 97
Expense Example, with Redemption, 3 Years 307
Expense Example, with Redemption, 5 Years 534
Expense Example, with Redemption, 10 Years 1,188
Columbia Small Cap Value Discovery Fund Institutional 3 Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 83
Expense Example, with Redemption, 3 Years 263
Expense Example, with Redemption, 5 Years 459
Expense Example, with Redemption, 10 Years 1,023
Columbia Small Cap Value Discovery Fund Class R  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 148
Expense Example, with Redemption, 3 Years 463
Expense Example, with Redemption, 5 Years 801
Expense Example, with Redemption, 10 Years $ 1,756