EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Nov. 04, 2023	Nov. 05, 2022	Nov. 04, 2023	Nov. 05, 2022
EARNINGS PER COMMON SHARE
Net earnings numerator (basic)	$ 641	$ 395	$ 1,416	$ 1,777
Net earnings numerator (diluted)	$ 641	$ 395	$ 1,416	$ 1,777
Average number of common shares used in basic calculation	719	716	718	719
Net earnings attributable to The Kroger Co. per basic common share	$ 0.89	$ 0.55	$ 1.97	$ 2.47
Dilutive effect of stock options (in shares)	6	8	7	9
Average number of common shares used in diluted calculation	725	724	725	728
Net earnings attributable to The Kroger Co. per diluted common share	$ 0.88	$ 0.55	$ 1.95	$ 2.44
Undistributed and distributed earnings (loss) to participating securities	$ 5	$ 3	$ 12	$ 16
Shares excluded from the earnings (loss) per share calculation due to anti-dilutive effect on earnings per share	3	2	3	2