v3.25.2
Shareholder Report, Holdings (Details)
Apr. 30, 2025
Columbia Short Duration Municipal Bond Fund - Class A | AAA rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
Columbia Short Duration Municipal Bond Fund - Class A | AA rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 35.10%
Columbia Short Duration Municipal Bond Fund - Class A | A rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.50%
Columbia Short Duration Municipal Bond Fund - Class A | BBB rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Columbia Short Duration Municipal Bond Fund - Class A | BB rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Columbia Short Duration Municipal Bond Fund - Class A | Not rated [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Columbia Short Duration Municipal Bond Fund - Class A | NEW YORK  
Holdings [Line Items]  
Percent of Net Asset Value 20.70%
Columbia Short Duration Municipal Bond Fund - Class A | TEXAS  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Columbia Short Duration Municipal Bond Fund - Class A | CALIFORNIA  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Columbia Short Duration Municipal Bond Fund - Class A | NEW JERSEY  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Class A | VIRGINIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Class A | MICHIGAN  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Class A | ILLINOIS  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Columbia Short Duration Municipal Bond Fund - Class A | PENNSYLVANIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Columbia Short Duration Municipal Bond Fund - Class A | COLORADO  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Columbia Short Duration Municipal Bond Fund - Class A | MASSACHUSETTS  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Columbia Short Duration Municipal Bond Fund - Class A | Municipal Bond [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 89.60%
Columbia Short Duration Municipal Bond Fund - Class A | Municipal Short Term [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Columbia Short Duration Municipal Bond Fund - Class A | Floating Rate Notes [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Columbia Short Duration Municipal Bond Fund - Class A | Other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Columbia Short Duration Municipal Bond Fund - Institutional Class | AAA rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
Columbia Short Duration Municipal Bond Fund - Institutional Class | AA rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 35.10%
Columbia Short Duration Municipal Bond Fund - Institutional Class | A rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.50%
Columbia Short Duration Municipal Bond Fund - Institutional Class | BBB rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Columbia Short Duration Municipal Bond Fund - Institutional Class | BB rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Columbia Short Duration Municipal Bond Fund - Institutional Class | Not rated [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Columbia Short Duration Municipal Bond Fund - Institutional Class | NEW YORK  
Holdings [Line Items]  
Percent of Net Asset Value 20.70%
Columbia Short Duration Municipal Bond Fund - Institutional Class | TEXAS  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Columbia Short Duration Municipal Bond Fund - Institutional Class | CALIFORNIA  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Columbia Short Duration Municipal Bond Fund - Institutional Class | NEW JERSEY  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Institutional Class | VIRGINIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Institutional Class | MICHIGAN  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Institutional Class | ILLINOIS  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Columbia Short Duration Municipal Bond Fund - Institutional Class | PENNSYLVANIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Columbia Short Duration Municipal Bond Fund - Institutional Class | COLORADO  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Columbia Short Duration Municipal Bond Fund - Institutional Class | MASSACHUSETTS  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Columbia Short Duration Municipal Bond Fund - Institutional Class | Municipal Bond [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 89.60%
Columbia Short Duration Municipal Bond Fund - Institutional Class | Municipal Short Term [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Columbia Short Duration Municipal Bond Fund - Institutional Class | Floating Rate Notes [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Columbia Short Duration Municipal Bond Fund - Institutional Class | Other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | AAA rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | AA rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 35.10%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | A rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.50%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | BBB rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | BB rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | Not rated [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | NEW YORK  
Holdings [Line Items]  
Percent of Net Asset Value 20.70%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | TEXAS  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | CALIFORNIA  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | NEW JERSEY  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | VIRGINIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | MICHIGAN  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | ILLINOIS  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | PENNSYLVANIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | COLORADO  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | MASSACHUSETTS  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | Municipal Bond [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 89.60%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | Municipal Short Term [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | Floating Rate Notes [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Columbia Short Duration Municipal Bond Fund - Institutional 2 Class | Other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | AAA rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | AA rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 35.10%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | A rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.50%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | BBB rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | BB rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | Not rated [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | NEW YORK  
Holdings [Line Items]  
Percent of Net Asset Value 20.70%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | TEXAS  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | CALIFORNIA  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | NEW JERSEY  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | VIRGINIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | MICHIGAN  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | ILLINOIS  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | PENNSYLVANIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | COLORADO  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | MASSACHUSETTS  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | Municipal Bond [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 89.60%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | Municipal Short Term [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | Floating Rate Notes [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Columbia Short Duration Municipal Bond Fund - Institutional 3 Class | Other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Columbia Short Duration Municipal Bond Fund - Class S | AAA rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
Columbia Short Duration Municipal Bond Fund - Class S | AA rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 35.10%
Columbia Short Duration Municipal Bond Fund - Class S | A rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.50%
Columbia Short Duration Municipal Bond Fund - Class S | BBB rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Columbia Short Duration Municipal Bond Fund - Class S | BB rating [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Columbia Short Duration Municipal Bond Fund - Class S | Not rated [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Columbia Short Duration Municipal Bond Fund - Class S | NEW YORK  
Holdings [Line Items]  
Percent of Net Asset Value 20.70%
Columbia Short Duration Municipal Bond Fund - Class S | TEXAS  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Columbia Short Duration Municipal Bond Fund - Class S | CALIFORNIA  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Columbia Short Duration Municipal Bond Fund - Class S | NEW JERSEY  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Class S | VIRGINIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Class S | MICHIGAN  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Columbia Short Duration Municipal Bond Fund - Class S | ILLINOIS  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Columbia Short Duration Municipal Bond Fund - Class S | PENNSYLVANIA  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Columbia Short Duration Municipal Bond Fund - Class S | COLORADO  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Columbia Short Duration Municipal Bond Fund - Class S | MASSACHUSETTS  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Columbia Short Duration Municipal Bond Fund - Class S | Municipal Bond [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 89.60%
Columbia Short Duration Municipal Bond Fund - Class S | Municipal Short Term [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Columbia Short Duration Municipal Bond Fund - Class S | Floating Rate Notes [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Columbia Short Duration Municipal Bond Fund - Class S | Other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%