Shareholder Report, Holdings (Details)	May 31, 2025
Columbia Select Large Cap Value Fund - Class A [Member] \| Verizon Communications, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Select Large Cap Value Fund - Class A [Member] \| Corning, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia Select Large Cap Value Fund - Class A [Member] \| Boeing Co. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class A [Member] \| Applied Materials, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class A [Member] \| Freeport-McMoRan, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class A [Member] \| Tenet Healthcare Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class A [Member] \| PG&E Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class A [Member] \| Lowe's Companies, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class A [Member] \| EPAM Systems, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class A [Member] \| Citigroup, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class A [Member] \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	19.10%
Columbia Select Large Cap Value Fund - Class A [Member] \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.40%
Columbia Select Large Cap Value Fund - Class A [Member] \| Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Select Large Cap Value Fund - Class A [Member] \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia Select Large Cap Value Fund - Class A [Member] \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Columbia Select Large Cap Value Fund - Class A [Member] \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia Select Large Cap Value Fund - Class A [Member] \| Communication Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Columbia Select Large Cap Value Fund - Class A [Member] \| Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Columbia Select Large Cap Value Fund - Class A [Member] \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Columbia Select Large Cap Value Fund - Class A [Member] \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class A [Member] \| Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.00%
Columbia Select Large Cap Value Fund - Class A [Member] \| Common Stocks [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.40%
Columbia Select Large Cap Value Fund - Class A [Member] \| Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Select Large Cap Value Fund - Class C [Member] \| Verizon Communications, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Select Large Cap Value Fund - Class C [Member] \| Corning, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia Select Large Cap Value Fund - Class C [Member] \| Boeing Co. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class C [Member] \| Applied Materials, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class C [Member] \| Freeport-McMoRan, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class C [Member] \| Tenet Healthcare Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class C [Member] \| PG&E Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class C [Member] \| Lowe's Companies, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class C [Member] \| EPAM Systems, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class C [Member] \| Citigroup, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class C [Member] \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	19.10%
Columbia Select Large Cap Value Fund - Class C [Member] \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.40%
Columbia Select Large Cap Value Fund - Class C [Member] \| Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Select Large Cap Value Fund - Class C [Member] \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia Select Large Cap Value Fund - Class C [Member] \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Columbia Select Large Cap Value Fund - Class C [Member] \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia Select Large Cap Value Fund - Class C [Member] \| Communication Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Columbia Select Large Cap Value Fund - Class C [Member] \| Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Columbia Select Large Cap Value Fund - Class C [Member] \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Columbia Select Large Cap Value Fund - Class C [Member] \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class C [Member] \| Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.00%
Columbia Select Large Cap Value Fund - Class C [Member] \| Common Stocks [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.40%
Columbia Select Large Cap Value Fund - Class C [Member] \| Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Select Large Cap Value Fund - Institutional Class \| Verizon Communications, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Select Large Cap Value Fund - Institutional Class \| Corning, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia Select Large Cap Value Fund - Institutional Class \| Boeing Co. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional Class \| Applied Materials, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional Class \| Freeport-McMoRan, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional Class \| Tenet Healthcare Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional Class \| PG&E Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional Class \| Lowe's Companies, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional Class \| EPAM Systems, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional Class \| Citigroup, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional Class \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	19.10%
Columbia Select Large Cap Value Fund - Institutional Class \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.40%
Columbia Select Large Cap Value Fund - Institutional Class \| Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Select Large Cap Value Fund - Institutional Class \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia Select Large Cap Value Fund - Institutional Class \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Columbia Select Large Cap Value Fund - Institutional Class \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia Select Large Cap Value Fund - Institutional Class \| Communication Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Columbia Select Large Cap Value Fund - Institutional Class \| Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Columbia Select Large Cap Value Fund - Institutional Class \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Columbia Select Large Cap Value Fund - Institutional Class \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional Class \| Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.00%
Columbia Select Large Cap Value Fund - Institutional Class \| Common Stocks [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.40%
Columbia Select Large Cap Value Fund - Institutional Class \| Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Verizon Communications, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Corning, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Boeing Co. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Applied Materials, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Freeport-McMoRan, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Tenet Healthcare Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| PG&E Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Lowe's Companies, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| EPAM Systems, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Citigroup, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	19.10%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.40%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Communication Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.00%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Common Stocks [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.40%
Columbia Select Large Cap Value Fund - Institutional 2 Class [Member] \| Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Verizon Communications, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Corning, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Boeing Co. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Applied Materials, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Freeport-McMoRan, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Tenet Healthcare Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| PG&E Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Lowe's Companies, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| EPAM Systems, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Citigroup, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	19.10%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.40%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Communication Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.00%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Common Stocks [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.40%
Columbia Select Large Cap Value Fund - Institutional 3 Class [Member] \| Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Select Large Cap Value Fund - Class R [Member] \| Verizon Communications, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Select Large Cap Value Fund - Class R [Member] \| Corning, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia Select Large Cap Value Fund - Class R [Member] \| Boeing Co. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class R [Member] \| Applied Materials, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class R [Member] \| Freeport-McMoRan, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class R [Member] \| Tenet Healthcare Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class R [Member] \| PG&E Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class R [Member] \| Lowe's Companies, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class R [Member] \| EPAM Systems, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class R [Member] \| Citigroup, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class R [Member] \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	19.10%
Columbia Select Large Cap Value Fund - Class R [Member] \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.40%
Columbia Select Large Cap Value Fund - Class R [Member] \| Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Select Large Cap Value Fund - Class R [Member] \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia Select Large Cap Value Fund - Class R [Member] \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Columbia Select Large Cap Value Fund - Class R [Member] \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia Select Large Cap Value Fund - Class R [Member] \| Communication Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Columbia Select Large Cap Value Fund - Class R [Member] \| Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Columbia Select Large Cap Value Fund - Class R [Member] \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Columbia Select Large Cap Value Fund - Class R [Member] \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class R [Member] \| Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.00%
Columbia Select Large Cap Value Fund - Class R [Member] \| Common Stocks [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.40%
Columbia Select Large Cap Value Fund - Class R [Member] \| Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Select Large Cap Value Fund - Class S [Member] \| Verizon Communications, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Select Large Cap Value Fund - Class S [Member] \| Corning, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia Select Large Cap Value Fund - Class S [Member] \| Boeing Co. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class S [Member] \| Applied Materials, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class S [Member] \| Freeport-McMoRan, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class S [Member] \| Tenet Healthcare Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Select Large Cap Value Fund - Class S [Member] \| PG&E Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class S [Member] \| Lowe's Companies, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class S [Member] \| EPAM Systems, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class S [Member] \| Citigroup, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class S [Member] \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	19.10%
Columbia Select Large Cap Value Fund - Class S [Member] \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.40%
Columbia Select Large Cap Value Fund - Class S [Member] \| Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.20%
Columbia Select Large Cap Value Fund - Class S [Member] \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.70%
Columbia Select Large Cap Value Fund - Class S [Member] \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.90%
Columbia Select Large Cap Value Fund - Class S [Member] \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.20%
Columbia Select Large Cap Value Fund - Class S [Member] \| Communication Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Columbia Select Large Cap Value Fund - Class S [Member] \| Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.20%
Columbia Select Large Cap Value Fund - Class S [Member] \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Columbia Select Large Cap Value Fund - Class S [Member] \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Select Large Cap Value Fund - Class S [Member] \| Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.00%
Columbia Select Large Cap Value Fund - Class S [Member] \| Common Stocks [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.40%
Columbia Select Large Cap Value Fund - Class S [Member] \| Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%

Shareholder Report, Holdings (Details)

May 31, 2025