v3.26.1
S000010789 [Member] Investment Objectives and Goals - S000010789 [Member]
Feb. 28, 2026
Prospectus [Line Items]  
Risk/Return [Heading] Summary of the Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
Columbia Convertible Securities Fund (the Fund) seeks total return, consisting of capital appreciation and current income.