v3.26.1
S000012097 [Member] Expense Example, No Redemption - Columbia Total Return Bond Fund
Apr. 30, 2026
USD ($)
Class Inst2  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 42
Expense Example, No Redemption, 3 Years 164
Expense Example, No Redemption, 5 Years 298
Expense Example, No Redemption, 10 Years 687
Class Inst3  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 40
Expense Example, No Redemption, 3 Years 151
Expense Example, No Redemption, 5 Years 273
Expense Example, No Redemption, 10 Years 629
Class S  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 50
Expense Example, No Redemption, 3 Years 185
Expense Example, No Redemption, 5 Years 333
Expense Example, No Redemption, 10 Years 762
Class A  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 373
Expense Example, No Redemption, 3 Years 557
Expense Example, No Redemption, 5 Years 755
Expense Example, No Redemption, 10 Years 1,329
Class C  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 152
Expense Example, No Redemption, 3 Years 498
Expense Example, No Redemption, 5 Years 869
Expense Example, No Redemption, 10 Years 1,710
Class R  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 101
Expense Example, No Redemption, 3 Years 343
Expense Example, No Redemption, 5 Years 604
Expense Example, No Redemption, 10 Years 1,352
Class Inst  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 50
Expense Example, No Redemption, 3 Years 185
Expense Example, No Redemption, 5 Years 333
Expense Example, No Redemption, 10 Years $ 762