But the company's same-store sales were far from record-breaking. Wal-Mart's stores overall posted a 1.5% year-over-year gain during the quarter; discount units represented a 1.4% increase, and Sam's Club warehouse units rose 2%. Over all of last year, same-store sales for all divisions climbed 3.3%.

Last year Wal-Mart brought its total number of domestic stores to 3,702, representing about 530 million sf. The company opened 83 Supercenters, 36 discount stores, 21 Neighborhood Market grocery stores and 13 Sam's Clubs. Wal-Mart now operates 1,713 Supercenters, 1,353 discount stores, 551 Sam's Clubs and 85 Neighborhood Markets.

Internationally, Wal-Mart opened 246 stores, bringing its total to 1,603. The company has units in Argentina, Brazil, Canada, China, Germany, Japan, Mexico, Puerto Rico, South Korea and the United Kingdom.