Derivative Financial Instruments (Details 1) (USD $) In Millions	12 Months Ended
	May 29, 2011	May 30, 2010	May 31, 2009
Location and amount of gains and losses from derivatives reported in statements of earnings:
Total gain from derivative instruments not designated as hedging instruments	$ 32.1	$ 152.1	$ 101.9
Commodity Contracts [Member] | Cost of goods sold [Member]
Location and amount of gains and losses from derivatives reported in statements of earnings:
Total gain from derivative instruments not designated as hedging instruments	58.1	149.0	98.1
Commodity Contracts [Member] | Selling, general and administrative expense [Member]
Location and amount of gains and losses from derivatives reported in statements of earnings:
Total gain from derivative instruments not designated as hedging instruments	2.1
Foreign Exchange Contracts [Member] | Cost of goods sold [Member]
Location and amount of gains and losses from derivatives reported in statements of earnings:
Total gain from derivative instruments not designated as hedging instruments	(20.2)	0.5	4.2
Foreign Exchange Contracts [Member] | Selling, general and administrative expense [Member]
Location and amount of gains and losses from derivatives reported in statements of earnings:
Total gain from derivative instruments not designated as hedging instruments	(7.9)
Other [Member] | Selling, general and administrative expense [Member]
Location and amount of gains and losses from derivatives reported in statements of earnings:
Total gain from derivative instruments not designated as hedging instruments		$ 2.6	$ (0.4)