Back in 2000 the prospects for Procter & Gamble’s Tide, the biggest brand in the company’s fabric and household care division, seemed limited. The laundry detergent had been around for more than 50 years and still dominated its core markets, but it was no longer growing fast enough to support P&G’s needs. A decade later Tide’s revenues have nearly doubled, helping push annual division revenues from $12 billion to almost $24 billion. The brand is surging in emerging markets, and its iconic bull’s-eye logo is turning up on an array of new products and even new businesses, from instant clothes fresheners to neighborhood dry cleaners.

A version of this article appeared in the June 2011 issue of Harvard Business Review.