Marsh & McLennan Companies, Inc. is a professional services firm offering clients advice and solutions in risk, strategy and people. The Company is the parent company of various risk advisors and specialty consultants, including Marsh, the insurance broker; Guy Carpenter, the risk and reinsurance specialist; Mercer, the provider of human resource and investment related financial advice and services, and Oliver Wyman Group, the management and economic consultancy. It conducts business through two segments: Risk and Insurance Services, which includes risk management activities, as well as insurance and reinsurance broking and services, and Consulting includes health, retirement, talent and investments consulting services and products, and specialized management, economic and brand consulting services. It conducts business in the Risk and Insurance Services segment through Marsh and Guy Carpenter. It conducts business in the Consulting segment through Mercer and Oliver Wyman Group.