There were two, slightly different versions released, an R-rated cut for the U.S. market, and an Unrated (previously, NC-17) one for the rest of the world and the home video market on Blu-Ray. Time differences are negligible; the differences are, as usual in cases such as these, that the Unrated cut contains slightly more violence and nudity. A detailed breakdown of the differences can be found at movie-censorship.com