BUSINESS SEGMENTS AND RELATED INFORMATION - Schedule of Segment Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 25, 2019	Oct. 26, 2018	Aug. 26, 2018
Net sales
Total net sales	$ 2,390.7		$ 1,834.4
Operating profit
Total operating profit	363.2		339.0
Equity method investment earnings	12.3		16.2
General corporate expense	99.5		80.8
Pension and postretirement non-service income	(9.5)		(10.2)
Interest expense, net	122.7		49.0
Income tax expense (benefit)	(11.5)		57.4
Net income	174.3		178.2
Less: Net income attributable to noncontrolling interests	0.5		0.0
Net income attributable to Conagra Brands, Inc.	173.8	$ 178.2	178.2
Snacks
Net sales
Total net sales	376.2		293.3
Other Shelf-stable
Net sales
Total net sales	601.4		477.4
Frozen
Net sales
Total net sales	751.9		463.5
Refrigerated
Net sales
Total net sales	207.2		171.7
International
Net sales
Total net sales	204.4		193.8
Foodservice
Net sales
Total net sales	249.6		234.7
Grocery & Snacks
Net sales
Total net sales	977.6		770.7
Operating profit
Total operating profit	151.7		178.6
Refrigerated & Frozen
Net sales
Total net sales	959.1		635.2
Operating profit
Total operating profit	155.6		95.5
International
Net sales
Total net sales	204.4		193.8
Operating profit
Total operating profit	24.8		37.3
Foodservice
Net sales
Total net sales	249.6		234.7
Operating profit
Total operating profit	$ 31.1		$ 27.6