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EARNINGS PER COMMON SHARE (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Nov. 05, 2016
Nov. 07, 2015
Nov. 05, 2016
Nov. 07, 2015
EARNINGS PER COMMON SHARE        
Net earnings attributable to The Kroger Co. per basic common share $ 388 $ 424 $ 1,458 $ 1,466
Average number of common shares used in basic calculation 940 965 946 966
Net earnings attributable to The Kroger Co. per basic common share $ 0.41 $ 0.44 $ 1.54 $ 1.52
Dilutive effect of stock options (in shares) 13 14 16 14
Net earnings attributable to The Kroger Co. per diluted common share $ 388 $ 424 $ 1,458 $ 1,466
Average number of common shares used in diluted calculation 953 979 962 980
Net earnings attributable to The Kroger Co. per diluted common share $ 0.41 $ 0.43 $ 1.52 $ 1.50
Undistributed and distributed earnings to participating securities $ 3 $ 4 $ 11 $ 14
Shares excluded from the earnings per share calculation due to anti-dilutive effect on earnings per share 11 3 7 1