Capital Stock (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended							1 Months Ended		12 Months Ended
	May 27, 2012	May 29, 2011	May 30, 2010	May 27, 2012 Preferred Class B [Member]	May 27, 2012 Preferred Class C [Member]	May 27, 2012 Preferred Class D [Member]	May 27, 2012 Preferred Class E [Member]	Dec. 31, 2011 Common Stock [Member]	Feb. 28, 2010 Common Stock [Member]	Dec. 31, 2011 Common Stock [Member]
Capital Stock (Textual) [Abstract]
Preferred Stock, Par or Stated Value Per Share				$ 50	$ 100
Preferred Stock, Shares Authorized				150,000	250,000	1,100,000	16,550,000
Preferred Stock, No Par Value						$ 0	$ 0
Preferred Stock, Shares Issued, Total	0
Preferred Stock, Shares Outstanding	0
Stock Repurchase Program, Authorized Amount								$ 750.0	$ 500.0	$ 554.2
Stock Repurchased During Period, Value	$ 352.4	$ 825.0	$ 100.0
Stock Repurchased During Period, Shares	13,800,000	36,200,000	4,000,000