It looks like Nestle and General Mills have a joint venture called Cereal Partners Worldwide (CPW).
“[General Mills] has strengthened its position with joint ventures. It works closely with Nestle, with Cereal Partners Worldwide, which resells General Mills cereals and others outside North America. General Mills also works with Pepsico in a joint venture, called Snack Ventures Europe (SVE), to sell Bugles and other snacks alongside Pepsico’s Frito-Lay snacks. …A third joint venture involves selling soy milk with Dupont.”