The French dairy giant Danone said today it will buy U.S.-based WhiteWave, a manufacturer of organic foods, plant-based milks and related products for $10.4 billion. The deal, which is expected to close by year’s end, doubles the size of Danone’s U.S. business, which includes yogurt maker Dannon, based in White Plains, N.Y.

In a webinar today from Paris, CEO Emmanuel Faber called the deal “a perfect match of vision, culture and businesses.”