Bring a large pan of salted water to a boil over medium-high heat. Add the pasta and cook as directed on the package until al dente. Drain the pasta well then rinse in cold water. Drain again. Combine the mayonnaise, vinegar, garlic, basil, salt, pepper, tomatoes, broccoli, and olives in a large bowl. Mix well then add the drained pasta and stir to coat the pasta in the dressing. Cover the bowl and chill for 1-2 hours or until ready to serve.