Condensed Consolidated Statements of Earnings (unaudited) (USD $) In Millions, except Per Share data	3 Months Ended
	Aug. 28, 2011	Aug. 29, 2010
Condensed Consolidated Statements of Earnings [Abstract]
Net sales	$ 3,072.0	$ 2,804.3
Costs and expenses:
Cost of goods sold	2,473.3	2,153.0
Selling, general and administrative expenses	422.9	410.0
Interest expense, net	52.9	37.3
Income from continuing operations before income taxes and equity method investment earnings	122.9	204.0
Income tax expense	43.6	66.9
Equity method investment earnings	6.2	6.2
Income from continuing operations	85.5	143.3
Income from discontinued operations, net of tax	0.1	3.0
Net income	85.6	146.3
Less: Net income (loss) attributable to noncontrolling interests	0.3	(0.1)
Net income attributable to ConAgra Foods, Inc.	$ 85.3	$ 146.4
Earnings per share - basic
Income from continuing operations attributable to ConAgra Foods, Inc. common stockholders	$ 0.21	$ 0.32
Income from discontinued operations attributable to ConAgra Foods, Inc. common stockholders		$ 0.01
Net income attributable to ConAgra Foods, Inc. common stockholders	$ 0.21	$ 0.33
Earnings per share - diluted
Income from continuing operations attributable to ConAgra Foods, Inc. common stockholders	$ 0.20	$ 0.32
Income from discontinued operations attributable to ConAgra Foods, Inc. common stockholders		$ 0.01
Net income attributable to ConAgra Foods, Inc. common stockholders	$ 0.20	$ 0.33
Cash dividends declared per common share	$ 0.23	$ 0.20