Upvote:4
The Mercosul countries do not require passport, only RG (Identity card) with a recent photo.
Note: Usually the maximum period is 90 days.
Source in portuguese: Correio Brasiliense
Upvote:5
Wikipedia actually has up-to-date pages that answer this question with colour-coded maps and tables, for every citizenship of the world. All the information is backed by official references.
The page for Brazilian citizens is Visa requirements for Brazilian citizens.