S000031375 [Member] Average Annual Total Returns	12 Months Ended	60 Months Ended	120 Months Ended	123 Months Ended	171 Months Ended	277 Months Ended	332 Months Ended
S000031375 [Member] Average Annual Total Returns	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024
Russell 2000® Value Index (reflects no deductions for fees, expenses or taxes)
Prospectus [Line Items]
Average Annual Return, Percent	8.05%	7.29%	7.14%
Russell 3000® Index (reflects no deductions for fees, expenses or taxes)
Prospectus [Line Items]
Average Annual Return, Percent	23.81%	13.86%	12.55%
Columbia Select Small Cap Value Fund Institutional 3 Class
Prospectus [Line Items]
Average Annual Return, Percent	12.93%	9.39%	7.18%
Performance Inception Date				Oct. 01, 2014
Columbia Select Small Cap Value Fund Class A
Prospectus [Line Items]
Average Annual Return, Percent	5.99%	7.70%	6.13%
Performance Inception Date							Apr. 25, 1997
Columbia Select Small Cap Value Fund Class A \| After Taxes on Distributions
Prospectus [Line Items]
Average Annual Return, Percent	1.92%	5.68%	4.23%
Performance Inception Date							Apr. 25, 1997
Columbia Select Small Cap Value Fund Class A \| After Taxes on Distributions and Sales
Prospectus [Line Items]
Average Annual Return, Percent	6.79%	5.96%	4.57%
Performance Inception Date							Apr. 25, 1997
Columbia Select Small Cap Value Fund Institutional 2 Class
Prospectus [Line Items]
Average Annual Return, Percent	12.83%	9.33%	7.12%
Performance Inception Date						Nov. 30, 2001
Columbia Select Small Cap Value Fund Institutional Class
Prospectus [Line Items]
Average Annual Return, Percent	12.74%	9.26%	7.03%
Performance Inception Date					Sep. 27, 2010