EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	4 Months Ended
	May 25, 2024	May 20, 2023
EARNINGS PER COMMON SHARE
Net earnings numerator (basic)	$ 940	$ 954
Net earnings numerator (diluted)	$ 940	$ 954
Average number of common shares used in basic calculation	721	717
Net earnings attributable to The Kroger Co. per basic common share	$ 1.30	$ 1.33
Dilutive effect of stock options (in shares)	6	7
Average number of common shares used in diluted calculation	727	724
Net earnings attributable to The Kroger Co. per diluted common share	$ 1.29	$ 1.32
Undistributed and distributed earnings (loss) to participating securities	$ 7	$ 8
Shares excluded from the earnings (loss) per share calculation due to anti-dilutive effect on earnings per share	4	3