General Mills Inc. has completed the acquisition of a 51% stake in French dairy group Yoplait for a total of $1.2 billion from French private equity fund PAI Partners and dairy cooperative Sodiaal.  The group has also acquired a 50% interest in a related entity that holds the worldwide Yoplait brands. Sodiaal will keep the remaining stakes in both entities.  General Mills already had a working relationship with Yoplait, having manufactured and distributed Yoplait products in the U.S. for the last 30 years. Yoplait's global retail sales were about $65 billion last year.