UPS is the world's largest package delivery company, using its fleet of 600 planes and 100,000-plus vehicles to deliver 4 billion packages annually to residences and businesses. The U.S. package segment generates two thirds of consolidated revenue and three fourths of total margins. The growing international segment delivers to Europe, Asia, and the Americas. UPS also operates less-than-truckload freight delivery, freight forwarding, logistics services, and retail stores.