Yes, Wal-Mart is global and here is an excerpt from an article I found at Wikipedia:
It operates in Mexico as Walmex, in the UK as ASDA, and in Japan as Seiyu. It has wholly owned operations in Argentina, Brazil, Canada, and Puerto Rico. Wal-Mart’s investments outside North America have had mixed results: its operations in South America and China are highly successful, while it was forced to pull out of Germany and South Korea when ventures there were unsuccessful.
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And here is a look at some astonishing (or sobering) numbers, depending on your point of view:
In 2005, Wal-Mart had $312.4 billion in sales, more than 6,200 facilities around the world—including 3,800 stores in the United States and 2,800 elsewhere, employing more than 1.6 million “associates” worldwide. Its U.S. presence grew so rapidly that only small pockets of the country remained further than 60 miles (100 km) from the nearest Wal-Mart.