Investment Strategy - Diamond Hill Large Cap Concentrated ETF	Sep. 26, 2025
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategy
Strategy Narrative [Text Block]	The fund, under normal market conditions, invests at least 80% of its net assets in U.S. equity securities with large market capitalizations ("large cap") that Diamond Hill Capital Management, Inc. (the “Adviser”) believes are undervalued. Equity securities consist of common and preferred stocks. Large cap companies are defined as companies with market capitalizations of $15 billion or greater at the time of purchase. The fund is non-diversified and intends to concentrate its investments in approximately 20-30 securities. The Adviser focuses on estimating a company’s value independent of its current stock price. To estimate a company’s value, the Adviser concentrates on the fundamental economic drivers of the business. The primary focus is on “bottom-up” analysis, which takes into consideration earnings, revenue growth, operating margins, and other economic factors. The Adviser also considers the level of industry competition, regulatory factors, the threat of technological obsolescence, and a variety of other industry factors. If the Adviser’s estimate of a company’s value differs sufficiently from the current market price, the company may be an attractive investment opportunity. In constructing a portfolio of securities, the Adviser is not constrained by the sector or industry weights in the benchmark. The Adviser relies on individual stock selection and discipline in the investment process to add value. The highest portfolio security weights are assigned to companies where the Adviser has the highest level of conviction. Once a stock is selected, the Adviser continues to monitor the company’s strategies, financial performance, and competitive environment. The Adviser may sell a security as it reaches the Adviser’s estimate of the company’s value if it believes that the company’s earnings, revenue growth, operating margin, or other economic factors are deteriorating, or if it identifies a stock that it believes offers a better investment opportunity.
Rule 35d-1 Eighty Percent Investment Policy [Text Block]	The fund, under normal market conditions, invests at least 80% of its net assets in U.S. equity securities with large market capitalizations ("large cap") that Diamond Hill Capital Management, Inc. (the “Adviser”) believes are undervalued. Equity securities consist of common and preferred stocks. Large cap companies are defined as companies with market capitalizations of $15 billion or greater at the time of purchase. The fund is non-diversified and intends to concentrate its investments in approximately 20-30 securities.

Investment Strategy - Diamond Hill Large Cap Concentrated ETF

Sep. 26, 2025

Principal Investment Strategy

The fund, under normal market conditions, invests at least 80% of its net assets in U.S. equity securities with large market capitalizations ("large cap") that Diamond Hill Capital Management, Inc. (the “Adviser”) believes are undervalued. Equity securities consist of common and preferred stocks. Large cap companies are defined as companies with market capitalizations of $15 billion or greater at the time of purchase. The fund is non-diversified and intends to concentrate its investments in approximately 20-30 securities.

The Adviser focuses on estimating a company’s value independent of its current stock price. To estimate a company’s value, the Adviser concentrates on the fundamental economic drivers of the business. The primary focus is on “bottom-up” analysis, which takes into consideration earnings, revenue growth, operating margins, and other economic factors. The Adviser also considers the level of industry competition, regulatory factors, the threat of technological obsolescence, and a variety of other industry factors. If the Adviser’s estimate of a company’s value differs sufficiently from the current market price, the company may be an attractive investment opportunity. In constructing a portfolio of securities, the Adviser is not constrained by the sector or industry weights in the benchmark. The Adviser relies on individual stock selection and discipline in the investment process to add value. The highest portfolio security weights are assigned to companies where the Adviser has the highest level of conviction.

Once a stock is selected, the Adviser continues to monitor the company’s strategies, financial performance, and competitive environment. The Adviser may sell a security as it reaches the Adviser’s estimate of the company’s value if it believes that the company’s earnings, revenue growth, operating margin, or other economic factors are deteriorating, or if it identifies a stock that it believes offers a better investment opportunity.

Rule 35d-1 Eighty Percent Investment Policy [Text Block]