EARNINGS PER COMMON SHARE (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended						4 Months Ended		12 Months Ended
	Feb. 01, 2014	Nov. 09, 2013	Aug. 17, 2013	Feb. 02, 2013	Nov. 03, 2012	Aug. 11, 2012	May 25, 2013	May 19, 2012	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012
EARNINGS PER COMMON SHARE
Net earnings attributable to The Kroger Co. per basic common share									$ 1,507	$ 1,485	$ 598
Average number of common shares used in basic calculation	511	515	515	514	518	538	514	556	514	533	590
Net earnings attributable to The Kroger Co. per basic common share (in dollars per share)	$ 0.82	$ 0.58	$ 0.61	$ 0.89	$ 0.61	$ 0.52	$ 0.93	$ 0.78	$ 2.93	$ 2.78	$ 1.01
Dilutive effect of stock options (in shares)									6	4	3
Net earnings attributable to The Kroger Co. per diluted common share									1,507	1,485	598
Average number of common shares used in diluted calculation	517	521	521	518	522	541	520	559	520	537	593
Net earnings attributable to The Kroger Co. per diluted common share (in dollars per share)	$ 0.81	$ 0.57	$ 0.60	$ 0.88	$ 0.60	$ 0.51	$ 0.92	$ 0.78	$ 2.90	$ 2.77	$ 1.01
Undistributed and distributed earnings to participating securities									$ 12	$ 12	$ 4
Shares excluded from the earnings per share calculation due to anti-dilutive effect on earnings per share									2.3	12.2	12.2