Aetna Inc. is a diversified healthcare benefits company. The Company operates through three segments: Health Care, Group Insurance and Large Case Pensions. The Health Care segment's products and services consist of medical, pharmacy benefit management services, dental, behavioral health and vision plans offered on both an insured basis and an employer-funded, or administrative services contact, basis and emerging businesses products and services, such as accountable care solutions (ACS). The Group Insurance segment's products consist of Life Insurance Products, Disability Insurance Products and Long-Term Care Insurance Products. The Large Case Pensions segment manages a range of retirement products, (including pension and annuity products) primarily for tax-qualified pension plans. Its customers include employer groups, individuals, college students, part-time and hourly workers, health plans, healthcare providers (providers), Government-sponsored plans, labor groups and expatriates.