Aetna Inc. operates as a diversified health care benefits company in the United States. The company operates in three segments: Health Care, Group Insurance, and Large Case Pensions. The Health Care segment provides medical, pharmacy benefit management, dental, behavioral health, and vision plans. This segment also provides Medicare and Medicaid products and services; and specialty products, such as health information exchange technology services, medical management and data analytics services, medical stop loss insurance, and products that offer access in its provider networks select markets. This segment offers its products and services to large multi-site national, mid-sized, and small employers, as well as individual customers. The Group Insurance segment provides life insurance products that consist of group term life insurance, voluntary spouse and dependent term life insurance, group universal life, and accidental death and dismemberment insurance; disability insurance products; and long-term care insurance products, which offer benefits to cover the cost of care in private home settings, adult day care, assisted living, or nursing facilities. This segment provides insurance products principally to employers that sponsor its products for the benefit of their employees and their employees’ dependents. The Large Case Pensions segment manages various retirement products, including pension and annuity products for tax qualified pension plans. The company’s customers include employer groups, individuals, college students, part-time and hourly workers, health plans, health care providers, governmental units, government-sponsored plans, labor groups, and expatriates. Aetna Inc. was founded in 1982 and is headquartered in Hartford, Connecticut.