Sept. 15 -- According to the Bloomberg Billionaires Index, Eli Broad is worth $7.4 billion. He built two Fortune 500 companies: KB Homes and SunAmerica. Since then, Broad’s focus has been on philanthropy. And art. He and his wife have amassed one of the most valuable collections of contemporary art in the world. And soon, it will have a permanent home, at a new museum called The Broad in Downtown Los Angeles. It opens to the public next week. Eli Broad sat down with Bloomberg’s David Gura and gave him an exclusive look at the new museum.