Four Things to Know About Wal-Mart's New CEO

Doug McMillon speaks at the shareholders meeting in Fayetteville, Arkansas on June 7 Photograph by April L. Brown/AP Photo

Mike Duke is retiring as chief executive of Wal-Mart Stores after a difficult couple of years for the world’s largest retailer. Doug McMillon, who’s 47 and heads the company’s international business, will take over on Feb. 1. Here are four things you need to know about McMillon and what his elevation means for the company he will soon be running:

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