EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Nov. 05, 2022	Nov. 06, 2021	Nov. 05, 2022	Nov. 06, 2021
EARNINGS PER COMMON SHARE
Net earnings numerator (basic)	$ 395	$ 478	$ 1,777	$ 1,079
Net earnings numerator (diluted)	$ 395	$ 478	$ 1,777	$ 1,079
Average number of common shares used in basic calculation	716	742	719	747
Net earnings attributable to The Kroger Co. per basic common share	$ 0.55	$ 0.64	$ 2.47	$ 1.44
Dilutive effect of stock options (in shares)	8	10	9	10
Average number of common shares used in diluted calculation	724	752	728	757
Net earnings attributable to The Kroger Co. per diluted common share	$ 0.55	$ 0.64	$ 2.44	$ 1.43
Undistributed and distributed earnings to participating securities	$ 3	$ 5	$ 16	$ 11
Shares excluded from the earnings per share calculation due to anti-dilutive effect on earnings per share	2	1	2	3