BUSINESS SEGMENTS AND RELATED INFORMATION (Segment Operations) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 24, 2013	Nov. 25, 2012	Nov. 24, 2013	Nov. 25, 2012
Net sales
Net sales	$ 4,713.9	$ 3,727.2	$ 8,911.4	$ 7,029.5
Operating profit
Operating profit	547.5	458.4	942.7	835.0
Equity method investment earnings
Equity method investment earnings	5.3	12.8	9.4	20.4
Operating profit plus equity method investment earnings
Total operating profit plus equity method investment earnings	552.8	471.2	952.1	855.4
General corporate expenses	105.5	90.6	229.2	49.1
Interest expense, net	95.4	53.4	191.0	102.7
Income tax expense	117.9	109.7	151.8	233.5
Income from continuing operations	234.0	217.5	380.1	470.1
Less: Net income attributable to noncontrolling interests	3.7	4.9	6.6	7.0
Income from continuing operations attributable to ConAgra Foods, Inc.	230.3	212.6	373.5	463.1
Consumer Foods
Net sales
Net sales	2,016.1	2,023.5	3,665.5	3,690.3
Operating profit
Operating profit	288.9	256.7	456.0	465.4
Equity method investment earnings
Equity method investment earnings	0.5	0.5	0.9	0.6
Operating profit plus equity method investment earnings
Total operating profit plus equity method investment earnings	289.4	257.2	456.9	466.0
Commercial Foods
Net sales
Net sales	1,574.0	1,526.3	3,107.9	2,988.9
Operating profit
Operating profit	169.2	194.7	330.3	355.7
Equity method investment earnings
Equity method investment earnings	4.8	12.3	8.5	19.8
Operating profit plus equity method investment earnings
Total operating profit plus equity method investment earnings	174.0	207.0	338.8	375.5
Private Brands
Net sales
Net sales	1,123.8	177.4	2,138.0	350.3
Operating profit
Operating profit	89.4	7.0	156.4	13.9
Operating profit plus equity method investment earnings
Total operating profit plus equity method investment earnings	$ 89.4	$ 7.0	$ 156.4	$ 13.9