Aon (NYSE:AON) reported quarterly earnings of $4.42 per share which beat the analyst consensus estimate of $4.25 by 4 percent. This is a 13.62 percent increase over earnings of $3.89 per share from the same period last year. The company reported quarterly sales of $4.15 billion which missed the analyst consensus estimate of $4.20 billion by 1.31 percent. This is a 22.87 percent increase over sales of $3.38 billion the same period last year.