Debt (Narrative) (Details) (USD $)	12 Months Ended	3 Months Ended			3 Months Ended
	May 26, 2013	Feb. 26, 2012 Six Percent Notes Due February 2012 [Member]	Nov. 25, 2012 Five Six Five Percent Notes Due September 2012 [Member]	May 27, 2012 Five Six Five Percent Notes Due September 2012 [Member]	Feb. 24, 2013 Floating Rate Notes Due January 2016 [Member]	May 26, 2013 Three One Five Percent Notes Due December 2021 [Member]	Nov. 27, 2011 Three One Five Percent Notes Due December 2021 [Member]	Feb. 26, 2012 Euribor Based Debt Due December 2014 [Member]	Aug. 28, 2011 Euribor Based Debt Due December 2014 [Member]	Feb. 24, 2013 January 2013 Fixed Rate Notes [Member]	May 26, 2013 Zero Eight Seven Five Percent Notes Due January 2016 [Member]	Feb. 24, 2013 Zero Eight Seven Five Percent Notes Due January 2016 [Member]	May 26, 2013 Four One Five Percent Notes Due February 2043 [Member]	Feb. 24, 2013 Four One Five Percent Notes Due February 2043 [Member]	May 26, 2013 Line Of Credit [Member]	May 26, 2013 Line Of Credit [Member] Expiration Date April 2015 [Member]	May 26, 2013 Line Of Credit [Member] Expiration Date April 2017 [Member]
Line of Credit Facility [Line Items]
Fee-paid committed lines of credit																$ 1,000,000,000	$ 1,700,000,000
Minimum Fixed Charge Coverage Ratio															2.5
Uncomitted Credit Lines	332,800,000
Amount Outstanding	84,200,000
Debt Instrument [Line Items]
Debt Instrument Face Amount					250,000,000		1,000,000,000	390,500,000	457,900,000	750,000,000		250,000,000		500,000,000
Debt Interest Rate		6.00%		5.65%		3.15%					0.875%		4.15%
Debt Instrument, Description of Variable Rate Basis					three-month LIBOR
Debt Instrument, Basis Spread on Variable Rate					0.30%
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	(87,100,000)
Extinguishment Of Debt Amount		1,000,000,000	520,800,000
Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next 12 Months Net	11,600,000
Long Term Debt Maturities Repayments Of Principal In Next Twelve Months	1,443,300,000
Long Term Debt Maturities Repayments Of Principal In Year Two	1,181,900,000
Long Term Debt Maturities Repayments Of Principal In Year Three	500,500,000
Long Term Debt Maturities Repayments Of Principal In Year Four	1,000,000,000
Long Term Debt Maturities Repayments Of Principal In Year Five	$ 100,000,000