Consolidated Statements of Earnings - USD ($) $ in Millions	12 Months Ended
	May 25, 2025	May 26, 2024	May 28, 2023
Income Statement [Abstract]
Net sales	$ 11,612.8	$ 12,050.9	$ 12,277.0
Cost of goods sold	8,609.3	8,717.5	9,012.2
Gross profit	3,003.5	3,333.4	3,264.8
Selling, general and administrative expenses	1,537.3	1,487.5	1,431.9
Goodwill impairment charges		526.5	141.7
Other intangible asset impairment charges	72.1	430.2	589.2
Loss on divestitures	29.5	36.4	26.7
Operating profit	1,364.6	852.8	1,075.3
Pension and postretirement non-service income	25.9	10.3	24.2
Interest expense, net	416.7	430.5	409.6
Equity method investment earnings	182.4	177.6	212.0
Income before income taxes	1,156.2	610.2	901.9
Income tax expense	3.7	262.5	218.7
Net income	1,152.5	347.7	683.2
Less: Net income (loss) attributable to noncontrolling interests	0.1	0.5	(0.4)
Net income attributable to Conagra Brands, Inc.	$ 1,152.4	$ 347.2	$ 683.6
Earnings Per Share, Basic [Abstract]
Net income attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	$ 2.41	$ 0.73	$ 1.43
Earnings Per Share, Diluted [Abstract]
Net income attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	$ 2.4	$ 0.72	$ 1.42