Complex sentence: The company is the world's third largest public corporation, according to the Fortune Global 500 list in 2012, the biggest private employer in the world with over two million employees, and is the largest retailer in the world.
Split into simpler sentences: The company is the world's third largest public corporation, according to the Fortune Global 500 list in 2012. It is also the biggest private employer in the world with over two million employees, and is the largest retailer in the world.