Aetna is a health care benefits company. It operates through three segments. The Health Care segment offers medical, pharmacy benefit management service, dental, behavioral health, and vision plans on an insured and employer-funded basis. The Group Insurance segment offers life insurance products, including group term life insurance, voluntary spouse and dependent term life insurance, group universal life insurance, and accidental death and dismemberment insurance. The Large Case Pensions segment manages various retirement products comprising pension and annuity products primarily for tax-qualified pension plans.