Consolidated Statements of Earnings - USD ($) $ in Millions	12 Months Ended
	May 26, 2024	May 28, 2023	May 29, 2022
Income Statement [Abstract]
Net sales	$ (12,050.9)	$ (12,277.0)	$ (11,535.9)
Costs and expenses:
Cost of goods sold	8,717.5	9,012.2	8,697.1
Selling, general and administrative expenses	2,480.6	2,189.5	1,492.8
Pension and postretirement non-service income	10.3	24.2	67.3
Interest expense, net	430.5	409.6	379.9
Equity method investment earnings	177.6	212.0	145.3
Income before income taxes	610.2	901.9	1,178.7
Income tax expense	262.5	218.7	290.5
Net income	347.7	683.2	888.2
Less: Net income (loss) attributable to noncontrolling interests	0.5	(0.4)
Net income attributable to Conagra Brands, Inc.	$ 347.2	$ 683.6	$ 888.2
Earnings per share - basic
Net income attributable to Conagra Brands, Inc. common stockholders, basic (in dollars per share)	$ 0.73	$ 1.43	$ 1.85
Earnings per share - diluted
Net income attributable to Conagra Brands, Inc. common stockholders, diluted (in dollars per share)	$ 0.72	$ 1.42	$ 1.84