Business Segments and Related Information (Details Textual) (USD $)	12 Months Ended
	May 27, 2012 Segment Employee	May 29, 2011	May 30, 2010
Business Segments and Related Information (Textual) [Abstract]
2013	$ 46,600,000
2014 and after	12,300,000
Derivative gain (loss) of previous year to be reclassified to segment operating results	32,300,000
Percentage of consolidated net sales in consumer food segment accounted by Wal-Mart Stores, Inc. and its affiliates	17.00%	18.00%	18.00%
Percentage of consolidated net receivables in commercial foods accounted by Wal-Mart Stores, Inc. and its affiliates	15.00%	15.00%
Number of reportable segments	2
Number of employees	26,100
Percentage of employees in party to collective bargaining agreements	42.00%
Percentage of employees in party to collective bargaining agreements schedule to expire in next year	43.00%
Foreign net sales, including sales by domestic segments to customers	$ 1,600,000,000	$ 1,300,000,000	$ 1,200,000,000