EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Aug. 17, 2024	Aug. 12, 2023	Aug. 17, 2024	Aug. 12, 2023
EARNINGS PER COMMON SHARE
Net earnings numerator (basic)	$ 463	$ (179)	$ 1,403	$ 775
Net earnings numerator (diluted)	$ 463	$ (179)	$ 1,403	$ 775
Average number of common shares used in basic calculation	723	719	722	718
Net earnings (loss) attributable to The Kroger Co. per basic common share	$ 0.64	$ (0.25)	$ 1.94	$ 1.08
Dilutive effect of stock options (in shares)	4		6	7
Average number of common shares used in diluted calculation	727	719	728	725
Net earnings (loss) attributable to The Kroger Co. per diluted common share	$ 0.64	$ (0.25)	$ 1.93	$ 1.07
Undistributed and distributed earnings (loss) to participating securities	$ 3	$ (1)	$ 10	$ 7
Shares excluded from the earnings (loss) per share calculation due to anti-dilutive effect on earnings per share	4	0	3	3