It will be an amicable split. After four decades of a financial marriage that kept analysts buzzing for years, Nestlé announced today that it will begin selling its shares of L'Oréal back to the world's largest cosmetics maker. The two companies said Tuesday that Switzerland's Nestlé is selling 8% of L'Oréal back to the French cosmetics giant for €6.5 billion ($8.88 billion), the first step in a long-anticipated corporate decoupling that could culminate with the Swiss food gi...