Well, I don't ever leave out details, in that I don't come up with information or description which I don't then use. I only ever come up with what seems to me absolutely essential to make the story work. I'm not usually an overwriter. As I revise, it's usually a matter of adding in as much vivid details as seem necessary to make the story come clear without slowing down the momentum of the story.
The newspaper fits the reader's program while the listener must fit the broadcaster's program.