v3.26.1
S000012096 [Member] Expense Example - Columbia Select Corporate Income Fund
Apr. 30, 2026
USD ($)
Columbia Select Corporate Income Fund Institutional 2 Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 51
Expense Example, with Redemption, 3 Years 173
Expense Example, with Redemption, 5 Years 307
Expense Example, with Redemption, 10 Years 696
Columbia Select Corporate Income Fund Class S  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 61
Expense Example, with Redemption, 3 Years 203
Expense Example, with Redemption, 5 Years 357
Expense Example, with Redemption, 10 Years 806
Columbia Select Corporate Income Fund Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 558
Expense Example, with Redemption, 3 Years 744
Expense Example, with Redemption, 5 Years 945
Expense Example, with Redemption, 10 Years 1,526
Columbia Select Corporate Income Fund Institutional Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 61
Expense Example, with Redemption, 3 Years 203
Expense Example, with Redemption, 5 Years 357
Expense Example, with Redemption, 10 Years 806
Columbia Select Corporate Income Fund Institutional 3 Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 48
Expense Example, with Redemption, 3 Years 160
Expense Example, with Redemption, 5 Years 281
Expense Example, with Redemption, 10 Years $ 637