Investments in Joint Ventures (Narrative) (Details)	12 Months Ended
	May 26, 2013
Cereal Partners Worldwide [Member]
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	50.00%
Additional Information	We have a 50 percent equity interest in Cereal Partners Worldwide (CPW), which manufactures and markets ready-to-eat cereal products in more than 130 countries and republics outside the United States and Canada. CPW also markets cereal bars in several European countries and manufactures private label cereals for customers in the United Kingdom. We have guaranteed a portion of CPW’s debt and its pension obligation in the United Kingdom.
Haagen Dazs Japan [Member]
Schedule of Equity Method Investments [Line Items]
Ownership Percentage	50.00%