v3.25.2
S000045258 [Member] Expense Example, No Redemption - Columbia Mortgage Opportunities Fund
May 31, 2025
USD ($)
Columbia Mortgage Opportunities Fund Class S  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 81
Expense Example, No Redemption, 3 Years 261
Expense Example, No Redemption, 5 Years 457
Expense Example, No Redemption, 10 Years 1,022
Columbia Mortgage Opportunities Fund Class A  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 403
Expense Example, No Redemption, 3 Years 629
Expense Example, No Redemption, 5 Years 874
Expense Example, No Redemption, 10 Years 1,574
Columbia Mortgage Opportunities Fund Class C  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 182
Expense Example, No Redemption, 3 Years 572
Expense Example, No Redemption, 5 Years 987
Expense Example, No Redemption, 10 Years 1,948
Columbia Mortgage Opportunities Fund Institutional 2 Class  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 75
Expense Example, No Redemption, 3 Years 244
Expense Example, No Redemption, 5 Years 428
Expense Example, No Redemption, 10 Years 961
Columbia Mortgage Opportunities Fund Institutional Class  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 81
Expense Example, No Redemption, 3 Years 261
Expense Example, No Redemption, 5 Years 457
Expense Example, No Redemption, 10 Years 1,022
Columbia Mortgage Opportunities Fund Institutional 3 Class  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 70
Expense Example, No Redemption, 3 Years 229
Expense Example, No Redemption, 5 Years 402
Expense Example, No Redemption, 10 Years $ 903