Capital Stock (Details Textuals) (USD $) In Millions, except Share data	1 Months Ended	12 Months Ended
	Feb. 27, 2010	May 29, 2011	May 30, 2010	May 31, 2009
Class of Stock [Line Items]
Preferred stock, shares issued		0
Preferred stock, shares outstanding		0
Stock repurchased during period, value		$ 825.0
Share repurchase program, shares		36,200,000
Preferred Class B [Member]
Class of Stock [Line Items]
Preferred stock, par value		$ 50
Preferred stock, shares authorized		150,000
Preferred Class C [Member]
Class of Stock [Line Items]
Preferred stock, par value		$ 100
Preferred stock, shares authorized		250,000
Preferred Class D [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized		1,100,000
Preferred stock, no par value		$ 0
Preferred Class E [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized		16,550,000
Preferred stock, no par value		$ 0
Common Stock [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount	500.0	554.2
Stock repurchased during period, value			$ 100.0	$ 900.0
Share repurchase program, shares			4,000,000	44,000,000