Marsh & McLennan Companies Inc. is a globally leading insurance broker. Currently operating under the Marsh and Guy Carpenter brands, the company is a global professional services firm providing risk and insurance services, risk consulting, and employee benefits consulting services to clients worldwide. Marsh & McLennan provides insurance and consulting services worldwide. Marsh & McLennan conducts business primarily through Risk and Insurance Services, and Consulting units. The Risk and Insurance Services segment is operated through Marsh and Guy Carpenter. Marsh is world leader in insurance brokering, providing risk management, insurance and reinsurance broking and insurance program management services across public and private entities. The Consulting segment comprises Mercer and Oliver Wyman Group. Mercer is a leading global provider of consulting, outsourcing and investment services.