P&G has returned over $147 billion to shareholders over the last decade.Many investors gravitate toward dividend stocks for a reliable source of passive income, no matter what the stock market is doing. But a dividend is only as reliable as the company paying it, which is why Dividend Kings are so impressive.Dividend Kings are companies that have paid and raised their dividends for at least 50 consecutive years. To do that, a company must have solid earnings growth and financial stability.Procter & Gamble ( ...