Wal-Mart Stores, Inc. is engaged in the operation of retail, wholesale and other units in various formats around the world. The Company operates through three segments: Walmart U.S., Walmart International and Sam's Club. The Walmart U.S. segment includes its mass merchant concept in the United States operating under the Walmart or Wal-Mart brands, as well as digital retail. The Walmart International segment consists of the Company's operations outside of the United States, including various retail Websites. The Walmart International segment includes various formats divided into three categories: retail, wholesale and other. These categories consist of various formats, including supercenters, supermarkets, and warehouse clubs, such as Sam's Clubs, cash and carry, home improvement, specialty electronics, apparel stores, drug stores and convenience stores, as well as digital retail. The Sam's Club segment includes the warehouse membership clubs in the United States, as well as samsclub.com.