EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	4 Months Ended
	May. 23, 2015	May. 24, 2014
EARNINGS PER COMMON SHARE
Net earnings attributable to The Kroger Co. per basic common share	$ 613	$ 497
Average number of common shares used in basic calculation	484,000	501,000
Net earnings attributable to The Kroger Co. per basic common share	$ 1.27	$ 0.99
Dilutive effect of stock options (in shares)	8,000	6,000
Net earnings attributable to The Kroger Co. per diluted common share	$ 613	$ 497
Average number of common shares used in diluted calculation	492,000	507,000
Net earnings attributable to The Kroger Co. per diluted common share	$ 1.25	$ 0.98
Undistributed and distributed earnings to participating securities	$ 6	$ 4
Shares excluded from the earnings per share calculation due to anti-dilutive effect on earnings per share	65	2,000