Idéo is first and foremost a research centre focusing on a common object of study: fundamental texts from the first ten centuries of Islam, covering a wide range of specialist fields.
The members of Idéo contribute to scientific journals, in particular the Institute's journal MIDÉO (Mélanges de l'Institut dominicain d'études orientales), founded in 1953 by Father G.C. Anawati and first published in 1954. Over the years, the journal has been overseen by successive editors, including Georges Anawati, Régis Morelon, Emilio Platti and Emmanuel Pisani, and since 2021 by Dennis Halft.
The institute also offers researchers access to a vast library containing more than 300,000 records and a multitude of journals covering various disciplines in the field of Islamology. This collection includes material on the Arabic language, Qur'anic studies, exegesis, the kalām, Islamic law and jurisprudence, history, philosophy, Sufism, the sciences, and much more. Since 8 November 2002, a new building has housed the library, which can accommodate almost 40 readers.
In addition to its academic and university activities, Idéo is actively involved in interfaith dialogue. Among Cairo's religious institutions, the institute maintains close links with Al-Azhar University, culminating in the signing of a mutual cooperation agreement in 2015. Idéo also maintains good relations with the Coptic Church.
Idéo members participate in academic conferences and organise seminars in various parts of the world. They are also happy to take part in conferences or debates for a cultivated readership.