Shareholder Report, Holdings (Details)
|
Jun. 30, 2025 |
| Columbia Acorn® Fund - Class A | SPX Technologies, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn® Fund - Class A | Churchill Downs, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Class A | GCM Grosvenor, Inc., Class A [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Class A | Parsons Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Class A | Curtiss-Wright Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn® Fund - Class A | Wingstop, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Class A | Five Below, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Class A | Carlyle Group, Inc. (The) [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class A | HealthEquity, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class A | Colliers International Group, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class A | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class A | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.50%
|
| Columbia Acorn® Fund - Class A | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.40%
|
| Columbia Acorn® Fund - Class A | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.60%
|
| Columbia Acorn® Fund - Class A | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.00%
|
| Columbia Acorn® Fund - Class A | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.80%
|
| Columbia Acorn® Fund - Class A | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Columbia Acorn® Fund - Class A | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class A | Common Stock [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.30%
|
| Columbia Acorn® Fund - Class A | Money Market Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Columbia Acorn® Fund - Class A | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Columbia Acorn® Fund - Class C | SPX Technologies, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn® Fund - Class C | Churchill Downs, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Class C | GCM Grosvenor, Inc., Class A [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Class C | Parsons Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Class C | Curtiss-Wright Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn® Fund - Class C | Wingstop, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Class C | Five Below, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Class C | Carlyle Group, Inc. (The) [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class C | HealthEquity, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class C | Colliers International Group, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class C | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class C | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.50%
|
| Columbia Acorn® Fund - Class C | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.40%
|
| Columbia Acorn® Fund - Class C | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.60%
|
| Columbia Acorn® Fund - Class C | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.00%
|
| Columbia Acorn® Fund - Class C | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.80%
|
| Columbia Acorn® Fund - Class C | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Columbia Acorn® Fund - Class C | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class C | Common Stock [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.30%
|
| Columbia Acorn® Fund - Class C | Money Market Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Columbia Acorn® Fund - Class C | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Columbia Acorn® Fund - Institutional Class | SPX Technologies, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn® Fund - Institutional Class | Churchill Downs, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Institutional Class | GCM Grosvenor, Inc., Class A [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Institutional Class | Parsons Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Institutional Class | Curtiss-Wright Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn® Fund - Institutional Class | Wingstop, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Institutional Class | Five Below, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Institutional Class | Carlyle Group, Inc. (The) [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional Class | HealthEquity, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional Class | Colliers International Group, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional Class | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional Class | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.50%
|
| Columbia Acorn® Fund - Institutional Class | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.40%
|
| Columbia Acorn® Fund - Institutional Class | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.60%
|
| Columbia Acorn® Fund - Institutional Class | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.00%
|
| Columbia Acorn® Fund - Institutional Class | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.80%
|
| Columbia Acorn® Fund - Institutional Class | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Columbia Acorn® Fund - Institutional Class | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional Class | Common Stock [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.30%
|
| Columbia Acorn® Fund - Institutional Class | Money Market Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Columbia Acorn® Fund - Institutional Class | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Columbia Acorn® Fund - Institutional 2 Class | SPX Technologies, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn® Fund - Institutional 2 Class | Churchill Downs, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Institutional 2 Class | GCM Grosvenor, Inc., Class A [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Institutional 2 Class | Parsons Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Institutional 2 Class | Curtiss-Wright Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn® Fund - Institutional 2 Class | Wingstop, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Institutional 2 Class | Five Below, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Institutional 2 Class | Carlyle Group, Inc. (The) [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional 2 Class | HealthEquity, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional 2 Class | Colliers International Group, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional 2 Class | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional 2 Class | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.50%
|
| Columbia Acorn® Fund - Institutional 2 Class | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.40%
|
| Columbia Acorn® Fund - Institutional 2 Class | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.60%
|
| Columbia Acorn® Fund - Institutional 2 Class | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.00%
|
| Columbia Acorn® Fund - Institutional 2 Class | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.80%
|
| Columbia Acorn® Fund - Institutional 2 Class | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Columbia Acorn® Fund - Institutional 2 Class | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional 2 Class | Common Stock [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.30%
|
| Columbia Acorn® Fund - Institutional 2 Class | Money Market Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Columbia Acorn® Fund - Institutional 2 Class | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Columbia Acorn® Fund - Institutional 3 Class | SPX Technologies, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn® Fund - Institutional 3 Class | Churchill Downs, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Institutional 3 Class | GCM Grosvenor, Inc., Class A [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Institutional 3 Class | Parsons Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Institutional 3 Class | Curtiss-Wright Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn® Fund - Institutional 3 Class | Wingstop, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Institutional 3 Class | Five Below, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Institutional 3 Class | Carlyle Group, Inc. (The) [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional 3 Class | HealthEquity, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional 3 Class | Colliers International Group, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional 3 Class | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional 3 Class | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.50%
|
| Columbia Acorn® Fund - Institutional 3 Class | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.40%
|
| Columbia Acorn® Fund - Institutional 3 Class | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.60%
|
| Columbia Acorn® Fund - Institutional 3 Class | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.00%
|
| Columbia Acorn® Fund - Institutional 3 Class | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.80%
|
| Columbia Acorn® Fund - Institutional 3 Class | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Columbia Acorn® Fund - Institutional 3 Class | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Institutional 3 Class | Common Stock [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.30%
|
| Columbia Acorn® Fund - Institutional 3 Class | Money Market Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Columbia Acorn® Fund - Institutional 3 Class | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Columbia Acorn® Fund - Class S | SPX Technologies, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn® Fund - Class S | Churchill Downs, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Class S | GCM Grosvenor, Inc., Class A [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Class S | Parsons Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn® Fund - Class S | Curtiss-Wright Corp. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn® Fund - Class S | Wingstop, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Class S | Five Below, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn® Fund - Class S | Carlyle Group, Inc. (The) [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class S | HealthEquity, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class S | Colliers International Group, Inc. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class S | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class S | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
25.50%
|
| Columbia Acorn® Fund - Class S | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.40%
|
| Columbia Acorn® Fund - Class S | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.60%
|
| Columbia Acorn® Fund - Class S | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.00%
|
| Columbia Acorn® Fund - Class S | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
16.80%
|
| Columbia Acorn® Fund - Class S | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.80%
|
| Columbia Acorn® Fund - Class S | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn® Fund - Class S | Common Stock [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
98.30%
|
| Columbia Acorn® Fund - Class S | Money Market Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Columbia Acorn® Fund - Class S | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.10%
|
| Columbia Acorn International® - Class A | Halma PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Columbia Acorn International® - Class A | Rightmove PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International® - Class A | Fisher & Paykel Healthcare Corp., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International® - Class A | CTS Eventim AG & Co KGaA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International® - Class A | Auto Trader Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn International® - Class A | Niterra Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International® - Class A | Nemetschek SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Class A | Belimo Holding AG, Registered Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Class A | CAR Group Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Class A | Capcom Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Columbia Acorn International® - Class A | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Columbia Acorn International® - Class A | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.00%
|
| Columbia Acorn International® - Class A | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|
| Columbia Acorn International® - Class A | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.90%
|
| Columbia Acorn International® - Class A | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.80%
|
| Columbia Acorn International® - Class A | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Acorn International® - Class A | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Columbia Acorn International® - Class A | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Columbia Acorn International® - Class A | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| Columbia Acorn International® - Class A | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Columbia Acorn International® - Class A | SWEDEN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| Columbia Acorn International® - Class A | AUSTRALIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Columbia Acorn International® - Class A | FINLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International® - Class A | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
34.10%
|
| Columbia Acorn International® - Class A | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.80%
|
| Columbia Acorn International® - Class A | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| Columbia Acorn International® - Class A | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.20%
|
| Columbia Acorn International® - Class A | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| Columbia Acorn International® - Class A | NETHERLANDS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Columbia Acorn International® - Class A | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.80%
|
| Columbia Acorn International® - Class A | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.50%
|
| Columbia Acorn International® - Institutional Class | Halma PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Columbia Acorn International® - Institutional Class | Rightmove PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International® - Institutional Class | Fisher & Paykel Healthcare Corp., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International® - Institutional Class | CTS Eventim AG & Co KGaA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International® - Institutional Class | Auto Trader Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn International® - Institutional Class | Niterra Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International® - Institutional Class | Nemetschek SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Institutional Class | Belimo Holding AG, Registered Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Institutional Class | CAR Group Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Institutional Class | Capcom Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Columbia Acorn International® - Institutional Class | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Columbia Acorn International® - Institutional Class | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.00%
|
| Columbia Acorn International® - Institutional Class | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|
| Columbia Acorn International® - Institutional Class | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.90%
|
| Columbia Acorn International® - Institutional Class | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.80%
|
| Columbia Acorn International® - Institutional Class | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Acorn International® - Institutional Class | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Columbia Acorn International® - Institutional Class | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Columbia Acorn International® - Institutional Class | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| Columbia Acorn International® - Institutional Class | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Columbia Acorn International® - Institutional Class | SWEDEN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| Columbia Acorn International® - Institutional Class | AUSTRALIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Columbia Acorn International® - Institutional Class | FINLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International® - Institutional Class | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
34.10%
|
| Columbia Acorn International® - Institutional Class | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.80%
|
| Columbia Acorn International® - Institutional Class | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| Columbia Acorn International® - Institutional Class | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.20%
|
| Columbia Acorn International® - Institutional Class | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| Columbia Acorn International® - Institutional Class | NETHERLANDS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Columbia Acorn International® - Institutional Class | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.80%
|
| Columbia Acorn International® - Institutional Class | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.50%
|
| Columbia Acorn International® - Institutional 2 Class | Halma PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Columbia Acorn International® - Institutional 2 Class | Rightmove PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International® - Institutional 2 Class | Fisher & Paykel Healthcare Corp., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International® - Institutional 2 Class | CTS Eventim AG & Co KGaA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International® - Institutional 2 Class | Auto Trader Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn International® - Institutional 2 Class | Niterra Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International® - Institutional 2 Class | Nemetschek SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Institutional 2 Class | Belimo Holding AG, Registered Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Institutional 2 Class | CAR Group Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Institutional 2 Class | Capcom Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Columbia Acorn International® - Institutional 2 Class | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Columbia Acorn International® - Institutional 2 Class | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.00%
|
| Columbia Acorn International® - Institutional 2 Class | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|
| Columbia Acorn International® - Institutional 2 Class | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.90%
|
| Columbia Acorn International® - Institutional 2 Class | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.80%
|
| Columbia Acorn International® - Institutional 2 Class | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Acorn International® - Institutional 2 Class | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Columbia Acorn International® - Institutional 2 Class | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Columbia Acorn International® - Institutional 2 Class | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| Columbia Acorn International® - Institutional 2 Class | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Columbia Acorn International® - Institutional 2 Class | SWEDEN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| Columbia Acorn International® - Institutional 2 Class | AUSTRALIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Columbia Acorn International® - Institutional 2 Class | FINLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International® - Institutional 2 Class | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
34.10%
|
| Columbia Acorn International® - Institutional 2 Class | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.80%
|
| Columbia Acorn International® - Institutional 2 Class | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| Columbia Acorn International® - Institutional 2 Class | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.20%
|
| Columbia Acorn International® - Institutional 2 Class | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| Columbia Acorn International® - Institutional 2 Class | NETHERLANDS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Columbia Acorn International® - Institutional 2 Class | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.80%
|
| Columbia Acorn International® - Institutional 2 Class | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.50%
|
| Columbia Acorn International® - Institutional 3 Class | Halma PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Columbia Acorn International® - Institutional 3 Class | Rightmove PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International® - Institutional 3 Class | Fisher & Paykel Healthcare Corp., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International® - Institutional 3 Class | CTS Eventim AG & Co KGaA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International® - Institutional 3 Class | Auto Trader Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn International® - Institutional 3 Class | Niterra Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International® - Institutional 3 Class | Nemetschek SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Institutional 3 Class | Belimo Holding AG, Registered Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Institutional 3 Class | CAR Group Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Institutional 3 Class | Capcom Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Columbia Acorn International® - Institutional 3 Class | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Columbia Acorn International® - Institutional 3 Class | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.00%
|
| Columbia Acorn International® - Institutional 3 Class | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|
| Columbia Acorn International® - Institutional 3 Class | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.90%
|
| Columbia Acorn International® - Institutional 3 Class | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.80%
|
| Columbia Acorn International® - Institutional 3 Class | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Acorn International® - Institutional 3 Class | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Columbia Acorn International® - Institutional 3 Class | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Columbia Acorn International® - Institutional 3 Class | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| Columbia Acorn International® - Institutional 3 Class | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Columbia Acorn International® - Institutional 3 Class | SWEDEN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| Columbia Acorn International® - Institutional 3 Class | AUSTRALIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Columbia Acorn International® - Institutional 3 Class | FINLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International® - Institutional 3 Class | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
34.10%
|
| Columbia Acorn International® - Institutional 3 Class | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.80%
|
| Columbia Acorn International® - Institutional 3 Class | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| Columbia Acorn International® - Institutional 3 Class | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.20%
|
| Columbia Acorn International® - Institutional 3 Class | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| Columbia Acorn International® - Institutional 3 Class | NETHERLANDS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Columbia Acorn International® - Institutional 3 Class | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.80%
|
| Columbia Acorn International® - Institutional 3 Class | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.50%
|
| Columbia Acorn International® - Class S | Halma PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.80%
|
| Columbia Acorn International® - Class S | Rightmove PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International® - Class S | Fisher & Paykel Healthcare Corp., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International® - Class S | CTS Eventim AG & Co KGaA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International® - Class S | Auto Trader Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn International® - Class S | Niterra Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International® - Class S | Nemetschek SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Class S | Belimo Holding AG, Registered Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Class S | CAR Group Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International® - Class S | Capcom Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Columbia Acorn International® - Class S | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.40%
|
| Columbia Acorn International® - Class S | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.00%
|
| Columbia Acorn International® - Class S | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.40%
|
| Columbia Acorn International® - Class S | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.90%
|
| Columbia Acorn International® - Class S | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.80%
|
| Columbia Acorn International® - Class S | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Acorn International® - Class S | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.10%
|
| Columbia Acorn International® - Class S | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.70%
|
| Columbia Acorn International® - Class S | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.90%
|
| Columbia Acorn International® - Class S | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Columbia Acorn International® - Class S | SWEDEN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| Columbia Acorn International® - Class S | AUSTRALIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Columbia Acorn International® - Class S | FINLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International® - Class S | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
34.10%
|
| Columbia Acorn International® - Class S | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
17.80%
|
| Columbia Acorn International® - Class S | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.10%
|
| Columbia Acorn International® - Class S | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.20%
|
| Columbia Acorn International® - Class S | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.20%
|
| Columbia Acorn International® - Class S | NETHERLANDS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Columbia Acorn International® - Class S | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.80%
|
| Columbia Acorn International® - Class S | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.50%
|
| Columbia Acorn International SelectSM - Class A | Schneider Electric SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Columbia Acorn International SelectSM - Class A | Capcom Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Columbia Acorn International SelectSM - Class A | Threei Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Columbia Acorn International SelectSM - Class A | Airbus Group SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Class A | Bank of Ireland Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Class A | ASML Holding NV [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International SelectSM - Class A | Adidas AG [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International SelectSM - Class A | Publicis Groupe SA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn International SelectSM - Class A | BT Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International SelectSM - Class A | Nestlé SA, Registered Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International SelectSM - Class A | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.00%
|
| Columbia Acorn International SelectSM - Class A | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.40%
|
| Columbia Acorn International SelectSM - Class A | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.60%
|
| Columbia Acorn International SelectSM - Class A | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.20%
|
| Columbia Acorn International SelectSM - Class A | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.10%
|
| Columbia Acorn International SelectSM - Class A | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Acorn International SelectSM - Class A | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.40%
|
| Columbia Acorn International SelectSM - Class A | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International SelectSM - Class A | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn International SelectSM - Class A | Unclassified Sectors [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Columbia Acorn International SelectSM - Class A | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
27.10%
|
| Columbia Acorn International SelectSM - Class A | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.30%
|
| Columbia Acorn International SelectSM - Class A | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.90%
|
| Columbia Acorn International SelectSM - Class A | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.50%
|
| Columbia Acorn International SelectSM - Class A | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.10%
|
| Columbia Acorn International SelectSM - Class A | NETHERLANDS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Columbia Acorn International SelectSM - Class A | IRELAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Class A | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International SelectSM - Class A | INDIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn International SelectSM - Class A | DENMARK |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Columbia Acorn International SelectSM - Class A | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.90%
|
| Columbia Acorn International SelectSM - Institutional Class | Schneider Electric SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Columbia Acorn International SelectSM - Institutional Class | Capcom Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Columbia Acorn International SelectSM - Institutional Class | Threei Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Columbia Acorn International SelectSM - Institutional Class | Airbus Group SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Institutional Class | Bank of Ireland Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Institutional Class | ASML Holding NV [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International SelectSM - Institutional Class | Adidas AG [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International SelectSM - Institutional Class | Publicis Groupe SA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn International SelectSM - Institutional Class | BT Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International SelectSM - Institutional Class | Nestlé SA, Registered Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International SelectSM - Institutional Class | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.00%
|
| Columbia Acorn International SelectSM - Institutional Class | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.40%
|
| Columbia Acorn International SelectSM - Institutional Class | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.60%
|
| Columbia Acorn International SelectSM - Institutional Class | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.20%
|
| Columbia Acorn International SelectSM - Institutional Class | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.10%
|
| Columbia Acorn International SelectSM - Institutional Class | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Acorn International SelectSM - Institutional Class | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.40%
|
| Columbia Acorn International SelectSM - Institutional Class | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International SelectSM - Institutional Class | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn International SelectSM - Institutional Class | Unclassified Sectors [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Columbia Acorn International SelectSM - Institutional Class | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
27.10%
|
| Columbia Acorn International SelectSM - Institutional Class | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.30%
|
| Columbia Acorn International SelectSM - Institutional Class | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.90%
|
| Columbia Acorn International SelectSM - Institutional Class | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.50%
|
| Columbia Acorn International SelectSM - Institutional Class | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.10%
|
| Columbia Acorn International SelectSM - Institutional Class | NETHERLANDS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Columbia Acorn International SelectSM - Institutional Class | IRELAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Institutional Class | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International SelectSM - Institutional Class | INDIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn International SelectSM - Institutional Class | DENMARK |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Columbia Acorn International SelectSM - Institutional Class | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.90%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Schneider Electric SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Capcom Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Threei Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Airbus Group SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Bank of Ireland Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | ASML Holding NV [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Adidas AG [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Publicis Groupe SA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | BT Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Nestlé SA, Registered Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.00%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.40%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.60%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.20%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.10%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.40%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Unclassified Sectors [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
27.10%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.30%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.90%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.50%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.10%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | NETHERLANDS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | IRELAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | INDIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | DENMARK |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Columbia Acorn International SelectSM - Institutional 2 Class | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.90%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Schneider Electric SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Capcom Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Threei Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Airbus Group SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Bank of Ireland Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | ASML Holding NV [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Adidas AG [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Publicis Groupe SA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | BT Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Nestlé SA, Registered Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.00%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.40%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.60%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.20%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.10%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.40%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Unclassified Sectors [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
27.10%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.30%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.90%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.50%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.10%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | NETHERLANDS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | IRELAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | INDIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | DENMARK |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Columbia Acorn International SelectSM - Institutional 3 Class | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.90%
|
| Columbia Acorn International SelectSM - Class S | Schneider Electric SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Columbia Acorn International SelectSM - Class S | Capcom Co., Ltd. [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.90%
|
| Columbia Acorn International SelectSM - Class S | Threei Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.20%
|
| Columbia Acorn International SelectSM - Class S | Airbus Group SE [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Class S | Bank of Ireland Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Class S | ASML Holding NV [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International SelectSM - Class S | Adidas AG [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.60%
|
| Columbia Acorn International SelectSM - Class S | Publicis Groupe SA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn International SelectSM - Class S | BT Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International SelectSM - Class S | Nestlé SA, Registered Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International SelectSM - Class S | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
21.00%
|
| Columbia Acorn International SelectSM - Class S | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.40%
|
| Columbia Acorn International SelectSM - Class S | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.60%
|
| Columbia Acorn International SelectSM - Class S | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
13.20%
|
| Columbia Acorn International SelectSM - Class S | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.10%
|
| Columbia Acorn International SelectSM - Class S | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Acorn International SelectSM - Class S | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.40%
|
| Columbia Acorn International SelectSM - Class S | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn International SelectSM - Class S | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn International SelectSM - Class S | Unclassified Sectors [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.70%
|
| Columbia Acorn International SelectSM - Class S | JAPAN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
27.10%
|
| Columbia Acorn International SelectSM - Class S | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
20.30%
|
| Columbia Acorn International SelectSM - Class S | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.90%
|
| Columbia Acorn International SelectSM - Class S | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.50%
|
| Columbia Acorn International SelectSM - Class S | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.10%
|
| Columbia Acorn International SelectSM - Class S | NETHERLANDS |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.60%
|
| Columbia Acorn International SelectSM - Class S | IRELAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn International SelectSM - Class S | UNITED STATES |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.40%
|
| Columbia Acorn International SelectSM - Class S | INDIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn International SelectSM - Class S | DENMARK |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Columbia Acorn International SelectSM - Class S | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.90%
|
| Columbia Thermostat FundSM - Class A | Columbia Total Return Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.90%
|
| Columbia Thermostat FundSM - Class A | Columbia Corporate Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Class A | Columbia U.S. Treasury Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Class A | Columbia Contrarian Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.10%
|
| Columbia Thermostat FundSM - Class A | Columbia Large Cap Enhanced Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Thermostat FundSM - Class A | Columbia Quality Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.00%
|
| Columbia Thermostat FundSM - Class A | Columbia Research Enhanced Core ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Class A | Columbia Large Cap Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| Columbia Thermostat FundSM - Class A | Columbia High Yield Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Columbia Thermostat FundSM - Class A | Columbia Diversified Fixed Income Allocation ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Class A | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Class A | Fixed Income Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
53.60%
|
| Columbia Thermostat FundSM - Class A | Equity Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.10%
|
| Columbia Thermostat FundSM - Class A | Exchange Traded Fixed Income Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Class A | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| Columbia Thermostat FundSM - Class C | Columbia Total Return Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.90%
|
| Columbia Thermostat FundSM - Class C | Columbia Corporate Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Class C | Columbia U.S. Treasury Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Class C | Columbia Contrarian Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.10%
|
| Columbia Thermostat FundSM - Class C | Columbia Large Cap Enhanced Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Thermostat FundSM - Class C | Columbia Quality Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.00%
|
| Columbia Thermostat FundSM - Class C | Columbia Research Enhanced Core ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Class C | Columbia Large Cap Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| Columbia Thermostat FundSM - Class C | Columbia High Yield Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Columbia Thermostat FundSM - Class C | Columbia Diversified Fixed Income Allocation ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Class C | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Class C | Fixed Income Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
53.60%
|
| Columbia Thermostat FundSM - Class C | Equity Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.10%
|
| Columbia Thermostat FundSM - Class C | Exchange Traded Fixed Income Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Class C | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| Columbia Thermostat FundSM - Institutional Class | Columbia Total Return Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.90%
|
| Columbia Thermostat FundSM - Institutional Class | Columbia Corporate Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Institutional Class | Columbia U.S. Treasury Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Institutional Class | Columbia Contrarian Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.10%
|
| Columbia Thermostat FundSM - Institutional Class | Columbia Large Cap Enhanced Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Thermostat FundSM - Institutional Class | Columbia Quality Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.00%
|
| Columbia Thermostat FundSM - Institutional Class | Columbia Research Enhanced Core ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Institutional Class | Columbia Large Cap Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| Columbia Thermostat FundSM - Institutional Class | Columbia High Yield Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Columbia Thermostat FundSM - Institutional Class | Columbia Diversified Fixed Income Allocation ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Institutional Class | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Institutional Class | Fixed Income Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
53.60%
|
| Columbia Thermostat FundSM - Institutional Class | Equity Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.10%
|
| Columbia Thermostat FundSM - Institutional Class | Exchange Traded Fixed Income Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Institutional Class | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Columbia Total Return Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.90%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Columbia Corporate Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Columbia U.S. Treasury Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Columbia Contrarian Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.10%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Columbia Large Cap Enhanced Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Columbia Quality Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.00%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Columbia Research Enhanced Core ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Columbia Large Cap Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Columbia High Yield Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Columbia Diversified Fixed Income Allocation ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Fixed Income Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
53.60%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Equity Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.10%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Exchange Traded Fixed Income Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Institutional 2 Class | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Columbia Total Return Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.90%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Columbia Corporate Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Columbia U.S. Treasury Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Columbia Contrarian Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.10%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Columbia Large Cap Enhanced Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Columbia Quality Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.00%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Columbia Research Enhanced Core ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Columbia Large Cap Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Columbia High Yield Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Columbia Diversified Fixed Income Allocation ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Fixed Income Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
53.60%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Equity Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.10%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Exchange Traded Fixed Income Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Institutional 3 Class | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| Columbia Thermostat FundSM - Class S | Columbia Total Return Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
14.90%
|
| Columbia Thermostat FundSM - Class S | Columbia Corporate Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Class S | Columbia U.S. Treasury Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.90%
|
| Columbia Thermostat FundSM - Class S | Columbia Contrarian Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.10%
|
| Columbia Thermostat FundSM - Class S | Columbia Large Cap Enhanced Core Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
10.00%
|
| Columbia Thermostat FundSM - Class S | Columbia Quality Income Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
9.00%
|
| Columbia Thermostat FundSM - Class S | Columbia Research Enhanced Core ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Class S | Columbia Large Cap Index Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.00%
|
| Columbia Thermostat FundSM - Class S | Columbia High Yield Bond Fund, Institutional 3 Class [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.90%
|
| Columbia Thermostat FundSM - Class S | Columbia Diversified Fixed Income Allocation ETF [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Class S | Exchange Traded Equity Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Thermostat FundSM - Class S | Fixed Income Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
53.60%
|
| Columbia Thermostat FundSM - Class S | Equity Fund [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.10%
|
| Columbia Thermostat FundSM - Class S | Exchange Traded Fixed Income Funds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.00%
|
| Columbia Thermostat FundSM - Class S | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
0.30%
|
| Columbia Acorn European FundSM - Class A | CTS Eventim AG & Co KGaA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn European FundSM - Class A | Elis SA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| Columbia Acorn European FundSM - Class A | Storebrand ASA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn European FundSM - Class A | Nexans SA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn European FundSM - Class A | Safestore Holdings PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn European FundSM - Class A | Quilter PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn European FundSM - Class A | LondonMetric Property PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Columbia Acorn European FundSM - Class A | Buzzi SpA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Columbia Acorn European FundSM - Class A | Banco Comercial Portugues SA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Columbia Acorn European FundSM - Class A | Chemring Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Columbia Acorn European FundSM - Class A | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn European FundSM - Class A | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
31.20%
|
| Columbia Acorn European FundSM - Class A | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Columbia Acorn European FundSM - Class A | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.10%
|
| Columbia Acorn European FundSM - Class A | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| Columbia Acorn European FundSM - Class A | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Columbia Acorn European FundSM - Class A | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Columbia Acorn European FundSM - Class A | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn European FundSM - Class A | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.40%
|
| Columbia Acorn European FundSM - Class A | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.40%
|
| Columbia Acorn European FundSM - Class A | Unclassified Sectors [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Columbia Acorn European FundSM - Class A | SWEDEN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Columbia Acorn European FundSM - Class A | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.80%
|
| Columbia Acorn European FundSM - Class A | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.50%
|
| Columbia Acorn European FundSM - Class A | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Acorn European FundSM - Class A | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Columbia Acorn European FundSM - Class A | IRELAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| Columbia Acorn European FundSM - Class A | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.90%
|
| Columbia Acorn European FundSM - Class A | AUSTRIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Columbia Acorn European FundSM - Class A | ITALY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.60%
|
| Columbia Acorn European FundSM - Class A | BELGIUM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Columbia Acorn European FundSM - Class A | SPAIN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.30%
|
| Columbia Acorn European FundSM - Institutional Class | CTS Eventim AG & Co KGaA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn European FundSM - Institutional Class | Elis SA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.90%
|
| Columbia Acorn European FundSM - Institutional Class | Storebrand ASA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.30%
|
| Columbia Acorn European FundSM - Institutional Class | Nexans SA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn European FundSM - Institutional Class | Safestore Holdings PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.20%
|
| Columbia Acorn European FundSM - Institutional Class | Quilter PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.10%
|
| Columbia Acorn European FundSM - Institutional Class | LondonMetric Property PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.00%
|
| Columbia Acorn European FundSM - Institutional Class | Buzzi SpA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Columbia Acorn European FundSM - Institutional Class | Banco Comercial Portugues SA [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.80%
|
| Columbia Acorn European FundSM - Institutional Class | Chemring Group PLC [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.70%
|
| Columbia Acorn European FundSM - Institutional Class | Energy Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.70%
|
| Columbia Acorn European FundSM - Institutional Class | Industrial Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
31.20%
|
| Columbia Acorn European FundSM - Institutional Class | Information Technology Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.70%
|
| Columbia Acorn European FundSM - Institutional Class | Financial Services Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
22.10%
|
| Columbia Acorn European FundSM - Institutional Class | Communications Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.00%
|
| Columbia Acorn European FundSM - Institutional Class | Healthcare Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Columbia Acorn European FundSM - Institutional Class | Consumer Discretionary Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
6.50%
|
| Columbia Acorn European FundSM - Institutional Class | Consumer Staples Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
2.50%
|
| Columbia Acorn European FundSM - Institutional Class | Materials Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.40%
|
| Columbia Acorn European FundSM - Institutional Class | Real Estate Sector [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
7.40%
|
| Columbia Acorn European FundSM - Institutional Class | Unclassified Sectors [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
1.50%
|
| Columbia Acorn European FundSM - Institutional Class | SWEDEN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Columbia Acorn European FundSM - Institutional Class | UNITED KINGDOM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
32.80%
|
| Columbia Acorn European FundSM - Institutional Class | FRANCE |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
11.50%
|
| Columbia Acorn European FundSM - Institutional Class | GERMANY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
8.10%
|
| Columbia Acorn European FundSM - Institutional Class | SWITZERLAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
5.30%
|
| Columbia Acorn European FundSM - Institutional Class | IRELAND |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.30%
|
| Columbia Acorn European FundSM - Institutional Class | Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
15.90%
|
| Columbia Acorn European FundSM - Institutional Class | AUSTRIA |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.70%
|
| Columbia Acorn European FundSM - Institutional Class | ITALY |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
4.60%
|
| Columbia Acorn European FundSM - Institutional Class | BELGIUM |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.40%
|
| Columbia Acorn European FundSM - Institutional Class | SPAIN |
|
| Holdings [Line Items] |
|
| Percent of Net Asset Value |
3.30%
|