Condensed Consolidated Statements of Earnings - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 29, 2020	Nov. 24, 2019	Nov. 29, 2020	Nov. 24, 2019
Income Statement [Abstract]
Net sales	$ 2,995.2	$ 2,820.8	$ 5,674.1	$ 5,211.5
Costs and expenses:
Cost of goods sold	2,106.3	2,022.9	3,975.0	3,749.1
Selling, general and administrative expenses	357.7	369.8	658.0	770.6
Pension and postretirement non-service income	(13.7)	(11.3)	(27.5)	(20.8)
Interest expense, net	107.7	121.4	221.4	244.1
Income before income taxes and equity method investment earnings	437.2	318.0	847.2	468.5
Income tax expense	80.7	84.1	167.4	72.6
Equity method investment earnings	23.0	27.6	29.5	39.9
Net income	379.5	261.5	709.3	435.8
Less: Net income attributable to noncontrolling interests	0.6	1.0	1.4	1.5
Net income attributable to Conagra Brands, Inc.	$ 378.9	$ 260.5	$ 707.9	$ 434.3
Earnings per share — basic
Net income attributable to Conagra Brands, Inc. common stockholders	$ 0.77	$ 0.53	$ 1.45	$ 0.89
Earnings per share — diluted
Net income attributable to Conagra Brands, Inc. common stockholders	$ 0.77	$ 0.53	$ 1.44	$ 0.89