Aon plc is a leading global provider of risk management, insurance, reinsurance brokerage, and human resources outsourcing services. It has 66,000 employees in over 500 offices across 120 countries. In 2014, Aon generated total revenue of $12 billion, with 65% from risk solutions and 35% from human resource solutions. Aon is led by President and CEO Gregory C. Case and other senior executives.