The world's largest private spirits business, Bacardi, has said it will buy tequila maker Patrón in a $5.1 billion deal. Bacardi, which makes Grey Goose Vodka and Bacardi Rum, already owns 30% of Patrón as part of a 2008 deal. Patrón Co-founder John Paul DeJoria, estimated to be worth $3.4 billion, will sell his 70% stake in the company.