Document and Entity Information - shares	4 Months Ended
	May 26, 2018	Jun. 26, 2018
Document and Entity Information Abstract
Entity Registrant Name	KROGER CO
Entity Central Index Key	0000056873
Document Type	10-Q
Document Period End Date	May 26, 2018
Amendment Flag	false
Current Fiscal Year End Date	--02-02
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		796,675,676
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1