v3.26.1
Shareholder Report, Average Annual Return (Details)
12 Months Ended 60 Months Ended 114 Months Ended 120 Months Ended
Apr. 30, 2026
Apr. 30, 2026
Apr. 30, 2026
Apr. 30, 2026
C000032979        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Select Corporate Income Fund Class A (including sales charges) ($12,629)      
Average Annual Return, Percent 0.15% (0.25%)   2.36%
C000255091        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Select Corporate Income Fund Class S ($13,609)      
C000122679        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Select Corporate Income Fund Institutional 2 Class ($13,753)      
C000122677        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Select Corporate Income Fund Institutional 3 Class ($13,807)      
C000032982        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Select Corporate Income Fund Institutional Class ($13,610)      
C000033005        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Small Cap Value Discovery Fund Class A (including sales charges) ($28,017)      
Average Annual Return, Percent 34.79% 8.04%   10.85%
C000033007        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Small Cap Value Discovery Fund Class C (including sales charges) ($27,572)      
Average Annual Return, Percent 41.01% 8.51%   10.67%
C000094701        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Small Cap Value Discovery Fund Class R ($28,985)      
C000255093        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Small Cap Value Discovery Fund Class S ($29,845)      
C000122683        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Small Cap Value Discovery Fund Institutional 2 Class ($30,820)      
C000078991        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Small Cap Value Discovery Fund Institutional 3 Class ($30,969)      
C000033008        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Small Cap Value Discovery Fund Institutional Class ($30,477)      
C000032983        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Total Return Bond Fund Class A (including sales charges) ($12,163)      
Average Annual Return, Percent 1.32% (0.84%)   1.98%
C000032985        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Total Return Bond Fund Class C (including sales charges) ($11,630)      
Average Annual Return, Percent 2.69% (0.98%)   1.52%
C000032986        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Total Return Bond Fund Class R ($12,229)      
C000255092        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Total Return Bond Fund Class S ($12,855)      
C000121794        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Total Return Bond Fund Institutional 2 Class ($12,952)      
C000122680        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Total Return Bond Fund Institutional 3 Class ($13,007)      
C000032987        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia Total Return Bond Fund Institutional Class ($12,858)      
C000032988        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia U.S. Treasury Index Fund Class A ($10,757)      
C000122681        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia U.S. Treasury Index Fund Institutional 2 Class ($10,916)      
C000174616        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia U.S. Treasury Index Fund Institutional 3 Class ($10,903)      
C000032991        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Columbia U.S. Treasury Index Fund Institutional Class ($10,919)      
C000179758        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Multi-Manager Directional Alternative Strategies Fund Institutional Class ($19,292)      
Without Sales Load [Member] | C000032979        
Average Annual Return [Line Items]        
Average Annual Return, Percent 5.11% 0.73%   2.86%
Without Sales Load [Member] | C000255091        
Average Annual Return [Line Items]        
Average Annual Return, Percent 5.49% 1.01%   3.13%
Without Sales Load [Member] | C000122679        
Average Annual Return [Line Items]        
Average Annual Return, Percent 5.49% 1.09%   3.24%
Without Sales Load [Member] | C000122677        
Average Annual Return [Line Items]        
Average Annual Return, Percent 5.64% 1.14%   3.28%
Without Sales Load [Member] | C000032982        
Average Annual Return [Line Items]        
Average Annual Return, Percent 5.49% 1.01%   3.13%
Without Sales Load [Member] | C000033005        
Average Annual Return [Line Items]        
Average Annual Return, Percent 43.03% 9.32%   11.51%
Without Sales Load [Member] | C000033007        
Average Annual Return [Line Items]        
Average Annual Return, Percent 42.01% 8.51%   10.67%
Without Sales Load [Member] | C000094701        
Average Annual Return [Line Items]        
Average Annual Return, Percent 42.64% 9.05%   11.23%
Without Sales Load [Member] | C000255093        
Average Annual Return [Line Items]        
Average Annual Return, Percent 43.39% 9.41%   11.55%
Without Sales Load [Member] | C000122683        
Average Annual Return [Line Items]        
Average Annual Return, Percent 43.53% 9.70%   11.91%
Without Sales Load [Member] | C000078991        
Average Annual Return [Line Items]        
Average Annual Return, Percent 43.57% 9.75%   11.97%
Without Sales Load [Member] | C000033008        
Average Annual Return [Line Items]        
Average Annual Return, Percent 43.41% 9.60%   11.79%
Without Sales Load [Member] | C000032983        
Average Annual Return [Line Items]        
Average Annual Return, Percent 4.46% (0.23%)   2.28%
Without Sales Load [Member] | C000032985        
Average Annual Return [Line Items]        
Average Annual Return, Percent 3.69% (0.98%)   1.52%
Without Sales Load [Member] | C000032986        
Average Annual Return [Line Items]        
Average Annual Return, Percent 4.20% (0.48%)   2.03%
Without Sales Load [Member] | C000255092        
Average Annual Return [Line Items]        
Average Annual Return, Percent 4.72% 0.02%   2.54%
Without Sales Load [Member] | C000121794        
Average Annual Return [Line Items]        
Average Annual Return, Percent 4.81% 0.09%   2.62%
Without Sales Load [Member] | C000122680        
Average Annual Return [Line Items]        
Average Annual Return, Percent 4.84% 0.13%   2.66%
Without Sales Load [Member] | C000032987        
Average Annual Return [Line Items]        
Average Annual Return, Percent 4.72% 0.02%   2.55%
Without Sales Load [Member] | C000032988        
Average Annual Return [Line Items]        
Average Annual Return, Percent 2.32% (0.57%)   0.73%
Without Sales Load [Member] | C000122681        
Average Annual Return [Line Items]        
Average Annual Return, Percent 2.37% (0.43%)   0.88%
Without Sales Load [Member] | C000174616        
Average Annual Return [Line Items]        
Average Annual Return, Percent 2.38% (0.44%)   0.87%
Without Sales Load [Member] | C000032991        
Average Annual Return [Line Items]        
Average Annual Return, Percent 2.37% (0.44%)   0.88%
Without Sales Load [Member] | C000179758        
Average Annual Return [Line Items]        
Average Annual Return, Percent 22.83% 10.68% 7.14%  
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
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 ($39,601)      
Average Annual Return, Percent 31.01% 11.91%   14.75%
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 ($39,601)      
Average Annual Return, Percent 31.01% 11.91%   14.75%
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 ($39,601)      
Average Annual Return, Percent 31.01% 11.91%   14.75%
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 ($39,601)      
Average Annual Return, Percent 31.01% 11.91%   14.75%
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 ($39,601)      
Average Annual Return, Percent 31.01% 11.91%   14.75%
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 ($39,601)      
Average Annual Return, Percent 31.01% 11.91%   14.75%
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 ($39,601)      
Average Annual Return, Percent 31.01% 11.91%   14.75%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
Columbia Threadneedle: Bloomberg U.S. Aggregate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index ($11,803)      
Average Annual Return, Percent 4.06% 0.18%   1.67%
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 ($39,773)      
Average Annual Return, Percent 31.05% 13.14% 15.58%  
Columbia Threadneedle: Blended Benchmark - 85% Bloomberg U.S. Corporate Bond Index, 15% ICE BofA U.S. Cash Pay High Yield Constr        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Blended Benchmark - 85% Bloomberg U.S. Corporate Bond Index, 15% ICE BofA U.S. Cash Pay High Yield Constrained Index ($13,691)      
Average Annual Return, Percent 5.80% 1.19%   3.19%
Columbia Threadneedle: Bloomberg U.S. Corporate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Corporate Bond Index ($13,078)      
Average Annual Return, Percent 5.29% 0.63%   2.72%
Columbia Threadneedle: Blended Benchmark - 85% Bloomberg U.S. Corporate Bond Index, 15% ICE BofA U.S. Cash Pay High Yield Constr        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Blended Benchmark - 85% Bloomberg U.S. Corporate Bond Index, 15% ICE BofA U.S. Cash Pay High Yield Constrained Index ($13,691)      
Average Annual Return, Percent 5.80% 1.19%   3.19%
Columbia Threadneedle: Bloomberg U.S. Corporate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Corporate Bond Index ($13,078)      
Average Annual Return, Percent 5.29% 0.63%   2.72%
Columbia Threadneedle: Blended Benchmark - 85% Bloomberg U.S. Corporate Bond Index, 15% ICE BofA U.S. Cash Pay High Yield Constr        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Blended Benchmark - 85% Bloomberg U.S. Corporate Bond Index, 15% ICE BofA U.S. Cash Pay High Yield Constrained Index ($13,691)      
Average Annual Return, Percent 5.80% 1.19%   3.19%
Columbia Threadneedle: Bloomberg U.S. Corporate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Corporate Bond Index ($13,078)      
Average Annual Return, Percent 5.29% 0.63%   2.72%
Columbia Threadneedle: Blended Benchmark - 85% Bloomberg U.S. Corporate Bond Index, 15% ICE BofA U.S. Cash Pay High Yield Constr        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Blended Benchmark - 85% Bloomberg U.S. Corporate Bond Index, 15% ICE BofA U.S. Cash Pay High Yield Constrained Index ($13,691)      
Average Annual Return, Percent 5.80% 1.19%   3.19%
Columbia Threadneedle: Bloomberg U.S. Corporate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Corporate Bond Index ($13,078)      
Average Annual Return, Percent 5.29% 0.63%   2.72%
Columbia Threadneedle: Blended Benchmark - 85% Bloomberg U.S. Corporate Bond Index, 15% ICE BofA U.S. Cash Pay High Yield Constr        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Blended Benchmark - 85% Bloomberg U.S. Corporate Bond Index, 15% ICE BofA U.S. Cash Pay High Yield Constrained Index ($13,691)      
Average Annual Return, Percent 5.80% 1.19%   3.19%
Columbia Threadneedle: Bloomberg U.S. Corporate Bond Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Bloomberg U.S. Corporate Bond Index ($13,078)      
Average Annual Return, Percent 5.29% 0.63%   2.72%
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 ($26,880)      
Average Annual Return, Percent 46.34% 7.33%   10.39%
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 ($26,880)      
Average Annual Return, Percent 46.34% 7.33%   10.39%
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 ($26,880)      
Average Annual Return, Percent 46.34% 7.33%   10.39%
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 ($26,880)      
Average Annual Return, Percent 46.34% 7.33%   10.39%
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 ($26,880)      
Average Annual Return, Percent 46.34% 7.33%   10.39%
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 ($26,880)      
Average Annual Return, Percent 46.34% 7.33%   10.39%
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 ($26,880)      
Average Annual Return, Percent 46.34% 7.33%   10.39%
Columbia Threadneedle: FTSE USBIG Treasury Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name FTSE USBIG Treasury Index ($11,100)      
Average Annual Return, Percent 2.55% (0.27%)   1.05%
Columbia Threadneedle: FTSE USBIG Treasury Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name FTSE USBIG Treasury Index ($11,100)      
Average Annual Return, Percent 2.55% (0.27%)   1.05%
Columbia Threadneedle: FTSE USBIG Treasury Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name FTSE USBIG Treasury Index ($11,100)      
Average Annual Return, Percent 2.55% (0.27%)   1.05%
Columbia Threadneedle: FTSE USBIG Treasury Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name FTSE USBIG Treasury Index ($11,100)      
Average Annual Return, Percent 2.55% (0.27%)   1.05%
Columbia Threadneedle: HFRX Equity Hedge Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name HFRX Equity Hedge Index ($16,730)      
Average Annual Return, Percent 14.07% 6.24% 5.55%  
Columbia Threadneedle: MSCI World Index (Net)        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name MSCI World Index (Net) ($32,262)      
Average Annual Return, Percent 29.16% 11.29% 13.07%  
Columbia Threadneedle: Wilshire Liquid Alternative Equity Hedge Index        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Wilshire Liquid Alternative Equity Hedge Index ($16,820)      
Average Annual Return, Percent 15.23% 6.37% 5.61%