Condensed Consolidated Statements of Earnings - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 24, 2019	Feb. 25, 2018	Feb. 24, 2019	Feb. 25, 2018
Income Statement [Abstract]
Net sales	$ 2,707.1	$ 1,994.5	$ 6,925.2	$ 5,972.1
Costs and expenses:
Cost of goods sold	1,954.8	1,395.7	4,980.2	4,196.0
Selling, general and administrative expenses	334.1	352.1	1,078.7	936.5
Pension and postretirement non-service income	(9.8)	(21.9)	(29.7)	(60.0)
Interest expense, net	130.9	39.8	260.5	114.2
Income from continuing operations before income taxes and equity method investment earnings	297.1	228.8	635.5	785.4
Income tax expense (benefit)	67.2	(91.4)	147.0	138.1
Equity method investment earnings	12.7	29.0	66.6	79.6
Income from continuing operations	242.6	349.2	555.1	726.9
Income (loss) from discontinued operations, net of tax	0.0	14.5	(1.9)	14.6
Net income	242.6	363.7	553.2	741.5
Less: Net income attributable to noncontrolling interests	0.6	0.9	1.4	2.7
Net income attributable to Conagra Brands, Inc.	$ 242.0	$ 362.8	$ 551.8	$ 738.8
Earnings per share — basic
Income from continuing operations attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	$ 0.50	$ 0.87	$ 1.28	$ 1.78
Income from discontinued operations attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	0.00	0.04	0.00	0.03
Net income attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	0.50	0.91	1.28	1.81
Earnings per share — diluted
Income from continuing operations attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	0.50	0.87	1.28	1.76
Income (loss) from discontinued operations attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	0.00	0.03	(0.01)	0.04
Net income attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	$ 0.50	$ 0.90	$ 1.27	$ 1.80