EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	4 Months Ended
	May 21, 2016	May 23, 2015
EARNINGS PER COMMON SHARE
Net earnings attributable to The Kroger Co. per basic common share	$ 674	$ 613
Average number of common shares used in basic calculation	954,000	969,000
Net earnings attributable to The Kroger Co. per basic common share	$ 0.71	$ 0.63
Dilutive effect of stock options (in shares)	12,000	14,000
Net earnings attributable to The Kroger Co. per diluted common share	$ 674	$ 613
Average number of common shares used in diluted calculation	966,000	983,000
Net earnings attributable to The Kroger Co. per diluted common share	$ 0.70	$ 0.62
Undistributed and distributed earnings to participating securities	$ 6	$ 6
Shares excluded from the earnings per share calculation due to anti-dilutive effect on earnings per share	3,000	65