EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Aug. 16, 2025	Aug. 17, 2024	Aug. 16, 2025	Aug. 17, 2024
EARNINGS PER COMMON SHARE
Net earnings numerator (basic)	$ 604	$ 463	$ 1,464	$ 1,403
Net earnings numerator (diluted)	$ 604	$ 463	$ 1,464	$ 1,403
Average number of common shares used in basic calculation	662	723	661	722
Net earnings attributable to The Kroger Co. per basic common share	$ 0.91	$ 0.64	$ 2.22	$ 1.94
Dilutive effect of stock options (in shares)	3	4	3	6
Average number of common shares used in diluted calculation	665	727	664	728
Net earnings attributable to The Kroger Co. per diluted common share	$ 0.91	$ 0.64	$ 2.2	$ 1.93
Undistributed and distributed earnings (loss) to participating securities	$ 5	$ 3	$ 11	$ 10
Shares excluded from the earnings per share calculation due to anti-dilutive effect on earnings per share	1	4	1	3