Aquisitions and Divestitures (Details) (USD $)	6 Months Ended
	Nov. 27, 2011	Nov. 28, 2010
Business Acquisition [Line Items]
Business Acquisition Cost Of Acquired Entity Purchase Price	$ 1,200,000,000
Goodwill, Acquired During Period	1,544,700,000
Goodwill, Allocation Adjustment	(51,900,000)
Nontrade Receivables [Line Items]
Exchangeable Note	131,600,000	0
Notes Receivable [Member]
Nontrade Receivables [Line Items]
Debt instrument maturity date	2016000000
Fair Value Of Exchangeable Note	110,900,000
Exchangeable Note	131,600,000
Trade Names [Member]
Acquired Indefinite Lived Intangible Assets [Line Items]
Acquired Indefinite Lived Intangible Asset Amount	437,300,000
Other Intangible Assets [Member]
Acquired Indefinite Lived Intangible Assets [Line Items]
Acquired Indefinite Lived Intangible Asset Amount	119,200,000
Customer Contracts [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired Finite Lived Intangible Asset Amount	440,200,000
Customer Relationships [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired Finite Lived Intangible Asset Amount	$ 130,900,000
Yoplait Marques SAS [Member]
Business Acquisition [Line Items]
Ownership Percentage in Consolidated Subsidiary		50.00%
Yoplait SAS [Member]
Business Acquisition [Line Items]
Ownership Percentage in Consolidated Subsidiary		51.00%