v3.25.2
S000031370 [Member] Expense Example - Columbia Seligman Technology and Information Fund
May 31, 2025
USD ($)
Columbia Seligman Technology and Information Fund Institutional Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 93
Expense Example, with Redemption, 3 Years 290
Expense Example, with Redemption, 5 Years 504
Expense Example, with Redemption, 10 Years 1,120
Columbia Seligman Technology and Information Fund Institutional 3 Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 84
Expense Example, with Redemption, 3 Years 262
Expense Example, with Redemption, 5 Years 455
Expense Example, with Redemption, 10 Years 1,014
Columbia Seligman Technology and Information Fund Class S  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 93
Expense Example, with Redemption, 3 Years 290
Expense Example, with Redemption, 5 Years 504
Expense Example, with Redemption, 10 Years 1,120
Columbia Seligman Technology and Information Fund Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 686
Expense Example, with Redemption, 3 Years 922
Expense Example, with Redemption, 5 Years 1,177
Expense Example, with Redemption, 10 Years 1,903
Columbia Seligman Technology and Information Fund Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 294
Expense Example, with Redemption, 3 Years 600
Expense Example, with Redemption, 5 Years 1,032
Expense Example, with Redemption, 10 Years 2,038
Columbia Seligman Technology and Information Fund Class R  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 144
Expense Example, with Redemption, 3 Years 446
Expense Example, with Redemption, 5 Years 771
Expense Example, with Redemption, 10 Years 1,691
Columbia Seligman Technology and Information Fund Institutional 2 Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 89
Expense Example, with Redemption, 3 Years 278
Expense Example, with Redemption, 5 Years 482
Expense Example, with Redemption, 10 Years $ 1,073