v3.26.1
S000010778 [Member] Expense Example - Columbia Short Duration Municipal Bond Fund
Apr. 30, 2026
USD ($)
Columbia Short Duration Municipal Bond Fund Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 165
Expense Example, with Redemption, 3 Years 350
Expense Example, with Redemption, 5 Years 551
Expense Example, with Redemption, 10 Years 1,130
Columbia Short Duration Municipal Bond Fund Institutional Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 40
Expense Example, with Redemption, 3 Years 173
Expense Example, with Redemption, 5 Years 318
Expense Example, with Redemption, 10 Years 741
Columbia Short Duration Municipal Bond Fund Institutional 2 Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 36
Expense Example, with Redemption, 3 Years 158
Expense Example, with Redemption, 5 Years 292
Expense Example, with Redemption, 10 Years 681
Columbia Short Duration Municipal Bond Fund Institutional 3 Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 33
Expense Example, with Redemption, 3 Years 149
Expense Example, with Redemption, 5 Years 275
Expense Example, with Redemption, 10 Years 645
Columbia Short Duration Municipal Bond Fund - Class S  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 40
Expense Example, with Redemption, 3 Years 173
Expense Example, with Redemption, 5 Years 318
Expense Example, with Redemption, 10 Years $ 741