Sometimes good isn't good enough—especially when a key stockholder is miffed. Procter & Gamble Co paid Bob McDonald, its former chairman, president and chief executive who abruptly left last spring, nearly 5% more last year as the company's performance improved. McDonald was replaced in P&G's top spot on May 23 by his predecessor, A.G. Lafley. While McDonald's departure was termed a retirement, many saw the change as confirmation that his tenure was a disappointme...