Saving people money to help them live better  -- that was Sam Walton’s vision when he opened the doors to the first Walmart more than 40 years ago. Today, this mission is more important than ever to our associates around the world, who work hard every day in all our markets to deliver on this promise. Walmart serves customers and members more than 200 million times per week at more than 10,000 retail locations under 69 different banners in 27 countries. With fiscal year 2011 sales of $...