Weyerhaeuser Company is a real estate investment trust (REIT). The Company is an owner of timberlands. It is principally engaged in growing and harvesting timber, as well as manufacturing, distributing and selling products made from trees. The Company owns nearly 7 million acres of timberlands, primarily in the United States, and manages additional timberlands under long-term licenses in Canada. It is engaged in the manufacturing of wood and specialty cellulose fibers products. The Company's operational segments include Timberlands, Wood Products and Cellulose Fibers. The Company's Timberlands segment manages approximately 6.9 million acres of private commercial timberlands across the world. The Wood Products segment manufactures and distributes wood products primarily in North America and Asia. The Cellulose Fibers segment is involved in the production of absorbent fluff pulp used in products, such as diapers.