v3.26.1
S000031359 [Member] Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended 183 Months Ended 262 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Bloomberg U.S. Aggregate Bond Index (reflects no deductions for fees, expenses or taxes)          
Prospectus [Line Items]          
Average Annual Return, Percent 7.30% (0.36%) 2.01%    
Russell 3000® Index (reflects no deductions for fees, expenses or taxes)          
Prospectus [Line Items]          
Average Annual Return, Percent 17.15% 13.15% 14.29%    
New Blended Benchmark (consisting of 75% Bloomberg U.S. Aggregate Bond Index, 20% Russell 3000® Index, 5% MSCI EAFE + Emerging Markets Index (Net)) (reflects reinvested dividends net of withholding taxes on the MSCI EAFE + Emerging Markets Index portion of the Blended Benchmark, and for all indexes reflects no deductions for fees, expenses or other taxes)          
Prospectus [Line Items]          
Average Annual Return, Percent 10.47% 2.74% 4.87%    
Former Blended Benchmark (consisting of 66% Bloomberg U.S. Aggregate Bond Index, 15% Russell 3000® Index, 10% FTSE Three-Month U.S. Treasury Bill Index, 5% MSCI EAFE Index (Net), 4% Bloomberg U.S. Corporate High-Yield Index) (reflects reinvested dividends net of withholding taxes on the MSCI EAFE Index portion of the Blended Benchmark, and for all indexes reflects no deductions for fees, expenses or other taxes)          
Prospectus [Line Items]          
Average Annual Return, Percent 9.69% 2.73% 4.46%    
Columbia Capital Allocation Conservative Portfolio Class A          
Prospectus [Line Items]          
Average Annual Return, Percent 5.22% 1.47% 3.42%    
Performance Inception Date         Mar. 04, 2004
Columbia Capital Allocation Conservative Portfolio Class A | After Taxes on Distributions          
Prospectus [Line Items]          
Average Annual Return, Percent 3.84% 0.05% 2.17%    
Performance Inception Date         Mar. 04, 2004
Columbia Capital Allocation Conservative Portfolio Class A | After Taxes on Distributions and Sales          
Prospectus [Line Items]          
Average Annual Return, Percent 3.10% 0.63% 2.22%    
Performance Inception Date         Mar. 04, 2004
Columbia Capital Allocation Conservative Portfolio Class C          
Prospectus [Line Items]          
Average Annual Return, Percent 8.65% 1.71% 3.15%    
Performance Inception Date         Mar. 04, 2004
Columbia Capital Allocation Conservative Portfolio Institutional Class          
Prospectus [Line Items]          
Average Annual Return, Percent 10.80% 2.70% 4.18%    
Performance Inception Date       Sep. 27, 2010