Chicago is a 2002 musical crime film directed by Rob Marshall and based on the 1975 stage musical of the same name. The movie follows two female jazz musicians in 1920s Chicago who become involved in a series of murders and use their notoriety to launch their careers.
It appears that Futura Book was most likely used to design the movie title on the poster. Futura is a commercial font, and you can find further information about it here.