ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details 2) - USD ($) $ in Millions	4 Months Ended
	May. 23, 2015	May. 24, 2014
Reclassification out of AOCI and the related tax effects
Tax expense	$ (330)	$ (274)
Net earnings attributable to The Kroger Co.	619	501
Reclassification out of AOCI
Reclassification out of AOCI and the related tax effects
Net earnings attributable to The Kroger Co.	16	8
Reclassification out of AOCI | Pension and Postretirement Defined Benefit Plans
Reclassification out of AOCI and the related tax effects
Amortization of amounts included in net periodic pension expense	25	12
Tax expense	(9)	(4)
Net earnings attributable to The Kroger Co.	$ 16	$ 8