EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Nov. 09, 2024	Nov. 04, 2023	Nov. 09, 2024	Nov. 04, 2023
EARNINGS PER COMMON SHARE
Net earnings numerator (basic)	$ 613	$ 641	$ 2,015	$ 1,416
Net earnings numerator (diluted)	$ 613	$ 641	$ 2,015	$ 1,416
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	$ 0.85	$ 0.89	$ 2.79	$ 1.97
Dilutive effect of stock options (in shares)	5	6	6	7
Average number of common shares used in diluted calculation	728	725	728	725
Net earnings attributable to The Kroger Co. per diluted common share	$ 0.84	$ 0.88	$ 2.77	$ 1.95
Undistributed and distributed earnings (loss) to participating securities	$ 5	$ 5	$ 16	$ 12
Shares excluded from the earnings (loss) per share calculation due to anti-dilutive effect on earnings per share	3	3	3	3