EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Aug. 13, 2022	Aug. 14, 2021	Aug. 13, 2022	Aug. 14, 2021
EARNINGS PER COMMON SHARE
Net earnings numerator (basic)	$ 724	$ 462	$ 1,381	$ 601
Net earnings numerator (diluted)	$ 724	$ 462	$ 1,381	$ 601
Average number of common shares used in basic calculation	716	746	720	750
Net earnings attributable to The Kroger Co. per basic common share	$ 1.01	$ 0.62	$ 1.92	$ 0.80
Dilutive effect of stock options (in shares)	9	9	10	8
Average number of common shares used in diluted calculation	725	755	730	758
Net earnings attributable to The Kroger Co. per diluted common share	$ 1.00	$ 0.61	$ 1.89	$ 0.79
Undistributed and distributed earnings to participating securities	$ 7	$ 5	$ 13	$ 6
Shares excluded from the earnings per share calculation due to anti-dilutive effect on earnings per share	2	2	1	8