The details of something are its individual features or elements.

Details about someone or something are facts or pieces of information about them.

A detail is a minor point or aspect of something, as opposed to the central ones.

You can refer to the small features of something which are often not noticed as detail .

A detail of a picture is a part of it that is printed separately and perhaps made bigger, so that smaller features can be clearly seen.

If you detail things, you list them or give information about them.

If someone is detailed to do a task or job, they are officially ordered to do it.

If someone does not go into details about a subject, or does not go into the detail, they mention it without explaining it fully or properly.

If you examine or discuss something in detail, you do it thoroughly and carefully.