EARNINGS (LOSS) PER SHARE - Schedule of basic and diluted earnings (loss) per share (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended				6 Months Ended
	Nov. 23, 2025	Aug. 24, 2025	Nov. 24, 2024	Aug. 25, 2024	Nov. 23, 2025	Nov. 24, 2024
EARNINGS (LOSS) PER SHARE
Net income (loss) attributable to Conagra Brands, Inc.	$ (663.6)	$ 164.5	$ 284.5	$ 466.8	$ (499.1)	$ 751.3
Basic weighted average shares outstanding (in shares)	479.0		478.0		478.8	478.5
Add: Dilutive effect of stock options, restricted stock unit awards, and other dilutive securities			1.3			1.4
Diluted weighted average shares outstanding (in shares)	479.0		479.3		478.8	479.9