v3.25.2
Shareholder Report, Line Graph (Details) - USD ($)
 12 Months Ended 24 Months Ended 36 Months Ended 48 Months Ended 60 Months Ended 72 Months Ended 84 Months Ended 96 Months Ended 108 Months Ended 120 Months Ended
Jul. 31, 2015
Jul. 31, 2025
Jul. 31, 2016
Jul. 31, 2017
Jul. 31, 2018
Jul. 31, 2019
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2022
Jul. 31, 2023
Jul. 31, 2024
Jul. 31, 2025
Columbia Income Opportunities Fund - Class A                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Class A (including sales charges)                    
Accumulated Value $ 9,529   $ 9,842 $ 10,666 $ 10,653 $ 11,466 $ 11,731 $ 12,652 $ 11,768 $ 12,127 $ 13,284 $ 14,235
Columbia Income Opportunities Fund - Class C                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Class C (including sales charges)                    
Accumulated Value 10,000   10,251 11,028 10,932 11,677 11,859 12,694 11,717 11,984 13,029 13,859
Columbia Income Opportunities Fund - Institutional Class                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Institutional Class                    
Accumulated Value 10,000   10,354 11,250 11,265 12,154 12,467 13,479 12,571 12,988 14,261 15,319
Columbia Income Opportunities Fund - Institutional 2 Class                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Institutional 2 Class                    
Accumulated Value 10,000   10,357 11,265 11,288 12,200 12,524 13,556 12,653 13,066 14,357 15,433
Columbia Income Opportunities Fund - Institutional 3 Class                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Institutional 3 Class                    
Accumulated Value 10,000   10,372 11,288 11,316 12,237 12,567 13,596 12,694 13,130 14,435 15,524
Columbia Income Opportunities Fund - Class S                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Class S                    
Accumulated Value 10,000   10,329 11,193 11,180 12,032 12,311 13,278 12,349 12,726 13,940 14,984
Bloomberg U.S. Aggregate Bond Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Bloomberg U.S. Aggregate Bond Index                    
Accumulated Value 10,000   10,594 10,539 10,455 11,299 12,443 12,356 11,229 10,851 11,405 11,790
ICE BofA BB-B US Cash Pay High Yield Constrained Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   ICE BofA BB-B US Cash Pay High Yield Constrained Index                    
Accumulated Value $ 10,000   $ 10,496 $ 11,509 $ 11,725 $ 12,673 $ 13,281 $ 14,431 $ 13,394 $ 13,870 $ 15,323 $ 16,481