Business Segments and Related Information - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Nov. 25, 2012	Nov. 27, 2011	Nov. 25, 2012	Nov. 27, 2011	May 27, 2012 Segment
Segment Reporting Information [Line Items]
Number of reportable segments					2
Increase in cost of goods sold		$ 27.8		$ 61.1
Cumulative net derivative gains from economic hedges recognized in corporate	55.2		55.2
Net derivative gains recognized in general corporate expenses	(16.1)	(27.2)	114.1	(60.7)
Derivative gain and loss to be reclassified to segment operating results thereafter					58.9
Expect to reclassify gains in 2013					30.7
Expect to reclassify gains in 2014 and after					$ 24.5
Percentage of consolidated net sales in consumer food segment accounted by Wal-Mart Stores, Inc. and its affiliates	18.00%	18.00%	17.00%	18.00%
Percentage of consolidated net receivables in commercial foods accounted by Wal-Mart Stores, Inc. and its affiliates	16.00%		16.00%		15.00%