Marsh & McLennan is a holding company. Through its subsidiaries, Co. is a services firm in the areas of risk, strategy and people. Co.'s segments are: Risk and Insurance Services, which includes risk management activities such as risk advice, risk transfer and risk control and mitigation solutions, as well as insurance and reinsurance broking and services; and Consulting, which includes health, wealth and career solutions and products, and other management, strategic, economic and brand consulting services. Co. conducts business in Risk and Insurance Services segment through Marsh and Guy Carpenter. Co. conducts business in Consulting segment through Mercer and Oliver Wyman Group.