Charlie Munger, the trusted confidante of Warren Buffett, passed away on Tuesday at the age of 99. His death leaves a significant void at Berkshire Hathaway (BRKa.N), and investors believe that despite the conglomerate's established succession plan, filling Munger's role will be challenging. Berkshire announced that Munger peacefully passed away at a California hospital, where he resided. No specific cause of death was provided. Munger was on the verge of turning 100 on January 1.