New York—Marsh & McLennan Cos., a global provider of risk, insurance and consulting services, announced a rebranding effort to restore the company's historical name. Marsh & McLennan Cos. will replace MMC as the corporate brand in the company's logo and in its advertising and marketing materials. The company debuted a global ad campaign, developed by Doremus New York, to announce the rebranding. The campaign is aimed at C-level executives and includes TV, print, online, out-of-home and mobile. The budget was undisclosed.