doc·u·men·ta·ry 
(dŏk′yə-mĕntə-rē)
(dŏk′yə-mĕntə-rē)adj.
1. Consisting of, concerning, or based on documents.
2. Presenting facts objectively without editorializing or inserting fictional matter, as in a book or film.
n. pl. doc·u·men·ta·ries
A work, such as a film or television program, presenting political, social, or historical subject matter in a factual and informative manner and often consisting of actual news films or interviews accompanied by narration.