BUSINESS SEGMENTS AND RELATED INFORMATION (Narrative) (Details) (USD $)	12 Months Ended				0 Months Ended
	May 26, 2013 Segment employee	May 27, 2012	May 29, 2011	Mar. 04, 2013 Ardent Mills [Member]	Mar. 04, 2013 Ardent Mills [Member] Minimum	Mar. 04, 2013 Cargill [Member] Ardent Mills [Member] Co-venturer [Member]	Mar. 04, 2013 CHS Inc [Member] Ardent Mills [Member] Co-venturer [Member]
Segment Reporting Information [Line Items]
Percentage ownership				44.00%		44.00%
Cost method investments, ownership percentage							12.00%
Expected cash distribution at least					50.00%
Number of reportable segments	4
Increase in cost of goods sold		$ 105,300,000	$ 83,000,000
Cumulative net derivative gains from economic hedges recognized in corporate	9,100,000
Net derivative gains recognized in general corporate expenses	74,800,000	(66,800,000)	35,100,000
Derivative gain and loss to be reclassified to segment operating results thereafter	58,900,000
Number of employees	34,840
Expect to reclassify losses in 2013	5,600,000
Expect to reclassify losses in 2014 and after	3,500,000
Percentage of consolidated net sales in consumer food segment accounted by Wal-Mart Stores, Inc. and its affiliates	17.00%	17.00%	18.00%
Percentage of consolidated net receivables in commercial foods accounted by Wal-Mart Stores, Inc. and its affiliates	15.00%	15.00%
Percentage of employees in party to collective bargaining agreements	40.00%
Percentage of employees in party to collective bargaining agreements schedule to expire in next year	31.00%
Foreign net sales, including sales by domestic segments to customers	$ 1,900,000,000	$ 1,600,000,000	$ 1,400,000,000