v3.26.1
Shareholder Report, Average Annual Return (Details)
12 Months Ended 60 Months Ended 120 Months Ended
Feb. 28, 2026
Feb. 28, 2026
Feb. 28, 2026
C000029837      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Convertible Securities Fund Class A (including sales charges) ($31,706)    
Average Annual Return, Percent 19.79% 2.97% 12.23%
C000029839      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Convertible Securities Fund Class C (including sales charges) ($31,210)    
Average Annual Return, Percent 25.10% 3.41% 12.05%
C000253703      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Convertible Securities Fund Class S ($33,777)    
C000122575      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Convertible Securities Fund Institutional 2 Class ($34,700)    
C000149202      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Convertible Securities Fund Institutional 3 Class ($34,871)    
C000029840      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Convertible Securities Fund Institutional Class ($34,488)    
C000029865      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Cornerstone Equity Fund Class A (including sales charges) ($36,486)    
Average Annual Return, Percent 5.54% 11.31% 13.82%
C000029867      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Cornerstone Equity Fund Class C (including sales charges) ($35,897)    
Average Annual Return, Percent 10.11% 11.77% 13.63%
C000253706      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Cornerstone Equity Fund Class S ($39,658)    
C000122583      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Cornerstone Equity Fund Institutional 2 Class ($39,970)    
C000173198      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Cornerstone Equity Fund Institutional 3 Class ($40,085)    
C000029868      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Cornerstone Equity Fund Institutional Class ($39,650)    
C000030031      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Enhanced Core Fund Class A ($39,275)    
C000030032      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Enhanced Core Fund Class R ($38,319)    
C000253708      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Enhanced Core Fund Class S ($39,416)    
C000079027      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Enhanced Core Fund Institutional 3 Class ($40,906)    
C000030033      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Enhanced Core Fund Institutional Class ($40,277)    
C000029874      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Growth Opportunity Fund Class A (including sales charges) ($36,737)    
Average Annual Return, Percent 4.58% 6.61% 13.90%
C000175686      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Growth Opportunity Fund Class R ($38,010)    
C000253707      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Growth Opportunity Fund Class S ($39,116)    
C000136868      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Growth Opportunity Fund Institutional 2 Class ($40,230)    
C000171353      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Growth Opportunity Fund Institutional 3 Class ($40,263)    
C000029877      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Growth Opportunity Fund Institutional Class ($39,971)    
C000030051      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Index Fund Class A ($40,388)    
C000122593      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Index Fund Institutional 2 Class ($41,416)    
C000173199      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Index Fund Institutional 3 Class ($41,424)    
C000030053      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Large Cap Index Fund Institutional Class ($41,410)    
C000030054      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Mid Cap Index Fund Class A ($29,955)    
C000122594      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Mid Cap Index Fund Institutional 2 Class ($30,696)    
C000173200      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Mid Cap Index Fund Institutional 3 Class ($30,700)    
C000030055      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Mid Cap Index Fund Institutional Class ($30,710)    
C000059843      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Overseas Value Fund Class A (including sales charges) ($28,459)    
Average Annual Return, Percent 42.40% 13.21% 11.03%
C000059844      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Overseas Value Fund Class C (including sales charges) ($28,041)    
Average Annual Return, Percent 48.89% 13.72% 10.86%
C000059845      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Overseas Value Fund Class R ($29,516)    
C000253709      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Overseas Value Fund Class S ($31,004)    
C000159975      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Overseas Value Fund Institutional 2 Class ($31,332)    
C000159976      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Overseas Value Fund Institutional 3 Class ($31,502)    
C000059846      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Overseas Value Fund Institutional Class ($31,003)    
C000029850      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Select Mid Cap Value Fund Class A (including sales charges) ($30,402)    
Average Annual Return, Percent 20.45% 10.86% 11.76%
C000029852      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Select Mid Cap Value Fund Class C (including sales charges) ($29,943)    
Average Annual Return, Percent 25.82% 11.33% 11.59%
C000029853      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Select Mid Cap Value Fund Class R ($31,469)    
C000253704      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Select Mid Cap Value Fund Class S ($32,370)    
C000122577      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Select Mid Cap Value Fund Institutional 2 Class ($33,414)    
C000079026      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Select Mid Cap Value Fund Institutional 3 Class ($33,560)    
C000029854      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Select Mid Cap Value Fund Institutional Class ($33,054)    
C000030056      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Small Cap Index Fund Class A ($27,758)    
C000122595      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Small Cap Index Fund Institutional 2 Class ($28,460)    
C000173201      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Small Cap Index Fund Institutional 3 Class ($28,409)    
C000030057      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Small Cap Index Fund Institutional Class ($28,468)    
C000029855      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Small Cap Value and Inflection Fund Class A (including sales charges) ($25,685)    
Average Annual Return, Percent 13.60% 6.96% 9.89%
C000029858      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Small Cap Value and Inflection Fund Class R ($26,572)    
C000253705      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Small Cap Value and Inflection Fund Class S ($27,353)    
C000122579      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Small Cap Value and Inflection Fund Institutional 2 Class ($28,356)    
C000122580      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Small Cap Value and Inflection Fund Institutional 3 Class ($28,492)    
C000029859      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Columbia Small Cap Value and Inflection Fund Institutional Class ($27,929)    
Without Sales Load [Member] | C000029837      
Average Annual Return [Line Items]      
Average Annual Return, Percent 27.07% 4.19% 12.90%
Without Sales Load [Member] | C000029839      
Average Annual Return [Line Items]      
Average Annual Return, Percent 26.10% 3.41% 12.05%
Without Sales Load [Member] | C000253703      
Average Annual Return [Line Items]      
Average Annual Return, Percent 27.40% 4.28% 12.94%
Without Sales Load [Member] | C000122575      
Average Annual Return [Line Items]      
Average Annual Return, Percent 27.44% 4.50% 13.25%
Without Sales Load [Member] | C000149202      
Average Annual Return [Line Items]      
Average Annual Return, Percent 27.53% 4.56% 13.30%
Without Sales Load [Member] | C000029840      
Average Annual Return [Line Items]      
Average Annual Return, Percent 27.40% 4.46% 13.18%
Without Sales Load [Member] | C000029865      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.99% 12.63% 14.49%
Without Sales Load [Member] | C000029867      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.11% 11.77% 13.63%
Without Sales Load [Member] | C000253706      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.23% 12.91% 14.77%
Without Sales Load [Member] | C000122583      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.34% 12.98% 14.86%
Without Sales Load [Member] | C000173198      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.34% 13.02% 14.89%
Without Sales Load [Member] | C000029868      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.24% 12.90% 14.77%
Without Sales Load [Member] | C000030031      
Average Annual Return [Line Items]      
Average Annual Return, Percent 15.77% 14.14% 14.66%
Without Sales Load [Member] | C000030032      
Average Annual Return [Line Items]      
Average Annual Return, Percent 15.47% 13.85% 14.38%
Without Sales Load [Member] | C000253708      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.04% 14.22% 14.70%
Without Sales Load [Member] | C000079027      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.24% 14.62% 15.13%
Without Sales Load [Member] | C000030033      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.08% 14.43% 14.95%
Without Sales Load [Member] | C000029874      
Average Annual Return [Line Items]      
Average Annual Return, Percent 10.97% 7.89% 14.58%
Without Sales Load [Member] | C000175686      
Average Annual Return [Line Items]      
Average Annual Return, Percent 10.66% 7.60% 14.29%
Without Sales Load [Member] | C000253707      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.22% 7.96% 14.61%
Without Sales Load [Member] | C000136868      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.30% 8.21% 14.94%
Without Sales Load [Member] | C000171353      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.33% 8.26% 14.95%
Without Sales Load [Member] | C000029877      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.17% 8.14% 14.86%
Without Sales Load [Member] | C000030051      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.43% 13.68% 14.98%
Without Sales Load [Member] | C000122593      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.73% 13.97% 15.27%
Without Sales Load [Member] | C000173199      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.71% 13.97% 15.27%
Without Sales Load [Member] | C000030053      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.72% 13.97% 15.27%
Without Sales Load [Member] | C000030054      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.71% 8.62% 11.60%
Without Sales Load [Member] | C000122594      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.07% 8.89% 11.87%
Without Sales Load [Member] | C000173200      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.04% 8.89% 11.87%
Without Sales Load [Member] | C000030055      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.00% 8.89% 11.87%
Without Sales Load [Member] | C000059843      
Average Annual Return [Line Items]      
Average Annual Return, Percent 51.05% 14.56% 11.69%
Without Sales Load [Member] | C000059844      
Average Annual Return [Line Items]      
Average Annual Return, Percent 49.89% 13.72% 10.86%
Without Sales Load [Member] | C000059845      
Average Annual Return [Line Items]      
Average Annual Return, Percent 50.66% 14.30% 11.43%
Without Sales Load [Member] | C000253709      
Average Annual Return [Line Items]      
Average Annual Return, Percent 51.46% 14.85% 11.98%
Without Sales Load [Member] | C000159975      
Average Annual Return [Line Items]      
Average Annual Return, Percent 51.52% 14.95% 12.10%
Without Sales Load [Member] | C000159976      
Average Annual Return [Line Items]      
Average Annual Return, Percent 51.58% 15.02% 12.16%
Without Sales Load [Member] | C000059846      
Average Annual Return [Line Items]      
Average Annual Return, Percent 51.46% 14.85% 11.98%
Without Sales Load [Member] | C000029850      
Average Annual Return [Line Items]      
Average Annual Return, Percent 27.76% 12.18% 12.43%
Without Sales Load [Member] | C000029852      
Average Annual Return [Line Items]      
Average Annual Return, Percent 26.82% 11.33% 11.59%
Without Sales Load [Member] | C000029853      
Average Annual Return [Line Items]      
Average Annual Return, Percent 27.40% 11.88% 12.15%
Without Sales Load [Member] | C000253704      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.09% 12.25% 12.46%
Without Sales Load [Member] | C000122577      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.15% 12.54% 12.82%
Without Sales Load [Member] | C000079026      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.19% 12.60% 12.87%
Without Sales Load [Member] | C000029854      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.02% 12.44% 12.70%
Without Sales Load [Member] | C000030056      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.44% 5.57% 10.75%
Without Sales Load [Member] | C000122595      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.77% 5.84% 11.03%
Without Sales Load [Member] | C000173201      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.75% 5.85% 11.01%
Without Sales Load [Member] | C000030057      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.77% 5.85% 11.03%
Without Sales Load [Member] | C000029855      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.54% 8.23% 10.55%
Without Sales Load [Member] | C000029858      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.28% 7.95% 10.27%
Without Sales Load [Member] | C000253705      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.83% 8.31% 10.59%
Without Sales Load [Member] | C000122579      
Average Annual Return [Line Items]      
Average Annual Return, Percent 21.07% 8.66% 10.99%
Without Sales Load [Member] | C000122580      
Average Annual Return [Line Items]      
Average Annual Return, Percent 21.11% 8.70% 11.04%
Without Sales Load [Member] | C000029859      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.82% 8.50% 10.82%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: Russell 1000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($41,608)    
Average Annual Return, Percent 16.73% 13.32% 15.32%
Columbia Threadneedle: Russell 1000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($41,608)    
Average Annual Return, Percent 16.73% 13.32% 15.32%
Columbia Threadneedle: Russell 1000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($41,608)    
Average Annual Return, Percent 16.73% 13.32% 15.32%
Columbia Threadneedle: Russell 1000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($41,608)    
Average Annual Return, Percent 16.73% 13.32% 15.32%
Columbia Threadneedle: Russell 1000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($41,608)    
Average Annual Return, Percent 16.73% 13.32% 15.32%
Columbia Threadneedle: Russell 1000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($41,608)    
Average Annual Return, Percent 16.73% 13.32% 15.32%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: S&P 500® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($42,249)    
Average Annual Return, Percent 16.99% 14.19% 15.50%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Index (Net) ($26,545)    
Average Annual Return, Percent 34.63% 10.78% 10.26%
Columbia Threadneedle: MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Index (Net) ($26,545)    
Average Annual Return, Percent 34.63% 10.78% 10.26%
Columbia Threadneedle: MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Index (Net) ($26,545)    
Average Annual Return, Percent 34.63% 10.78% 10.26%
Columbia Threadneedle: MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Index (Net) ($26,545)    
Average Annual Return, Percent 34.63% 10.78% 10.26%
Columbia Threadneedle: MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Index (Net) ($26,545)    
Average Annual Return, Percent 34.63% 10.78% 10.26%
Columbia Threadneedle: MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Index (Net) ($26,545)    
Average Annual Return, Percent 34.63% 10.78% 10.26%
Columbia Threadneedle: MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Index (Net) ($26,545)    
Average Annual Return, Percent 34.63% 10.78% 10.26%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: Russell 3000® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 3000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($40,728)    
Average Annual Return, Percent 17.02% 12.80% 15.08%
Columbia Threadneedle: ICE BofA US Convertible Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name ICE BofA US Convertible Index ($32,767)    
Average Annual Return, Percent 24.77% 5.09% 12.60%
Columbia Threadneedle: ICE BofA US Convertible Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name ICE BofA US Convertible Index ($32,767)    
Average Annual Return, Percent 24.77% 5.09% 12.60%
Columbia Threadneedle: ICE BofA US Convertible Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name ICE BofA US Convertible Index ($32,767)    
Average Annual Return, Percent 24.77% 5.09% 12.60%
Columbia Threadneedle: ICE BofA US Convertible Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name ICE BofA US Convertible Index ($32,767)    
Average Annual Return, Percent 24.77% 5.09% 12.60%
Columbia Threadneedle: ICE BofA US Convertible Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name ICE BofA US Convertible Index ($32,767)    
Average Annual Return, Percent 24.77% 5.09% 12.60%
Columbia Threadneedle: ICE BofA US Convertible Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name ICE BofA US Convertible Index ($32,767)    
Average Annual Return, Percent 24.77% 5.09% 12.60%
Columbia Threadneedle: Russell 1000® Growth Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Growth Index ($53,356)    
Average Annual Return, Percent 14.78% 14.36% 18.23%
Columbia Threadneedle: Russell 1000® Growth Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Growth Index ($53,356)    
Average Annual Return, Percent 14.78% 14.36% 18.23%
Columbia Threadneedle: Russell 1000® Growth Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Growth Index ($53,356)    
Average Annual Return, Percent 14.78% 14.36% 18.23%
Columbia Threadneedle: Russell 1000® Growth Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Growth Index ($53,356)    
Average Annual Return, Percent 14.78% 14.36% 18.23%
Columbia Threadneedle: Russell 1000® Growth Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Growth Index ($53,356)    
Average Annual Return, Percent 14.78% 14.36% 18.23%
Columbia Threadneedle: Russell 1000® Growth Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 1000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Growth Index ($53,356)    
Average Annual Return, Percent 14.78% 14.36% 18.23%
Columbia Threadneedle: S&P MidCap 400® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P MidCap 400<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($31,364)    
Average Annual Return, Percent 17.24% 9.10% 12.11%
Columbia Threadneedle: S&P MidCap 400® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P MidCap 400<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($31,364)    
Average Annual Return, Percent 17.24% 9.10% 12.11%
Columbia Threadneedle: S&P MidCap 400® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P MidCap 400<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($31,364)    
Average Annual Return, Percent 17.24% 9.10% 12.11%
Columbia Threadneedle: S&P MidCap 400® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P MidCap 400<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($31,364)    
Average Annual Return, Percent 17.24% 9.10% 12.11%
Columbia Threadneedle: MSCI EAFE Value Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Value Index (Net) ($28,590)    
Average Annual Return, Percent 46.09% 15.06% 11.08%
Columbia Threadneedle: MSCI EAFE Value Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Value Index (Net) ($28,590)    
Average Annual Return, Percent 46.09% 15.06% 11.08%
Columbia Threadneedle: MSCI EAFE Value Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Value Index (Net) ($28,590)    
Average Annual Return, Percent 46.09% 15.06% 11.08%
Columbia Threadneedle: MSCI EAFE Value Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Value Index (Net) ($28,590)    
Average Annual Return, Percent 46.09% 15.06% 11.08%
Columbia Threadneedle: MSCI EAFE Value Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Value Index (Net) ($28,590)    
Average Annual Return, Percent 46.09% 15.06% 11.08%
Columbia Threadneedle: MSCI EAFE Value Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Value Index (Net) ($28,590)    
Average Annual Return, Percent 46.09% 15.06% 11.08%
Columbia Threadneedle: MSCI EAFE Value Index (Net)      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name MSCI EAFE Value Index (Net) ($28,590)    
Average Annual Return, Percent 46.09% 15.06% 11.08%
Columbia Threadneedle: Russell Midcap® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell Midcap<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($29,181)    
Average Annual Return, Percent 19.33% 10.17% 11.30%
Columbia Threadneedle: Russell Midcap® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell Midcap<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($29,181)    
Average Annual Return, Percent 19.33% 10.17% 11.30%
Columbia Threadneedle: Russell Midcap® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell Midcap<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($29,181)    
Average Annual Return, Percent 19.33% 10.17% 11.30%
Columbia Threadneedle: Russell Midcap® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell Midcap<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($29,181)    
Average Annual Return, Percent 19.33% 10.17% 11.30%
Columbia Threadneedle: Russell Midcap® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell Midcap<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($29,181)    
Average Annual Return, Percent 19.33% 10.17% 11.30%
Columbia Threadneedle: Russell Midcap® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell Midcap<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($29,181)    
Average Annual Return, Percent 19.33% 10.17% 11.30%
Columbia Threadneedle: Russell Midcap® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell Midcap<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($29,181)    
Average Annual Return, Percent 19.33% 10.17% 11.30%
Columbia Threadneedle: S&P SmallCap 600® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P SmallCap 600<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($29,000)    
Average Annual Return, Percent 17.89% 6.06% 11.23%
Columbia Threadneedle: S&P SmallCap 600® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P SmallCap 600<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($29,000)    
Average Annual Return, Percent 17.89% 6.06% 11.23%
Columbia Threadneedle: S&P SmallCap 600® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P SmallCap 600<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($29,000)    
Average Annual Return, Percent 17.89% 6.06% 11.23%
Columbia Threadneedle: S&P SmallCap 600® Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name S&P SmallCap 600<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index ($29,000)    
Average Annual Return, Percent 17.89% 6.06% 11.23%
Columbia Threadneedle: Russell 2000® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($28,130)    
Average Annual Return, Percent 24.95% 7.67% 10.90%
Columbia Threadneedle: Russell 2000® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($28,130)    
Average Annual Return, Percent 24.95% 7.67% 10.90%
Columbia Threadneedle: Russell 2000® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($28,130)    
Average Annual Return, Percent 24.95% 7.67% 10.90%
Columbia Threadneedle: Russell 2000® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($28,130)    
Average Annual Return, Percent 24.95% 7.67% 10.90%
Columbia Threadneedle: Russell 2000® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($28,130)    
Average Annual Return, Percent 24.95% 7.67% 10.90%
Columbia Threadneedle: Russell 2000® Value Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Value Index ($28,130)    
Average Annual Return, Percent 24.95% 7.67% 10.90%