EARNINGS PER COMMON SHARE (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 16, 2014	Aug. 17, 2013	Aug. 16, 2014	Aug. 17, 2013
EARNINGS PER COMMON SHARE
Net earnings attributable to The Kroger Co. per basic common share	$ 343	$ 315	$ 840	$ 791
Average number of common shares used in basic calculation	485	515	494	515
Net earnings attributable to The Kroger Co. per basic common share (in dollars per share)	$ 0.71	$ 0.61	$ 1.70	$ 1.54
Dilutive effect of stock options (in shares)	6	6	6	5
Net earnings attributable to The Kroger Co. per diluted common share	343	315	840	791
Average number of common shares used in diluted calculation	491	521	500	520
Net earnings attributable to The Kroger Co. per diluted common share (in dollars per share)	$ 0.70	$ 0.60	$ 1.68	$ 1.52
Undistributed and distributed earnings to participating securities	$ 4	$ 2	$ 8	$ 7
Shares excluded from the earnings per share calculation due to anti-dilutive effect on earnings per share	2	2	2	1