Conversation so far:
what is the main idea of the movie up?
In Up, Carl sets to fulfill his dream to see the wilds of South America, a promise made to his late wife, by tying thousands of balloons to his house.
who wrote the story for the movie Up?
Bob Peterson, Pete Docter, Tom McCarthy
what was the story for the movie Up based on?
Docter began working on the story in 2004, which was based on fantasies of escaping from life when it becomes too irritating.

Question: who produced the movie?
Self-contained rewrite: who produced the movie Up?