Costco Wholesale Corporation (Costco) is engaged in the operation of membership warehouses in the United States (U.S.) and Puerto Rico, Canada, United Kingdom (U.K.), Mexico, Japan, Australia, Spain, and through majority-owned subsidiaries in Taiwan and Korea. The Company operated 663 membership warehouses and an average warehouse is approximately 144,000 square feet. The Company�s warehouses generally operate on a seven-day, 69-hour week. The Company�s product categories include Food, Sundries, Hardlines, Fresh Food, Softlines, Ancillary and Other. The Company�s online business provides products, which include services, such as photo processing, pharmacy, travel, business delivery, and membership services.