Document and Entity Information - USD ($) $ in Billions	12 Months Ended
Feb. 03, 2018	Mar. 29, 2018	Aug. 12, 2017
Document and Entity Information Abstract
Entity Registrant Name	KROGER CO
Entity Central Index Key	0000056873
Document Type	10-K/A
Document Period End Date	Feb. 03, 2018
Amendment Flag	true
Amendment Description	The Kroger Co. (the "Company") is filing this Amendment No. 1 to its Annual Report on Form 10-K for the fiscal year ended February 3, 2018, which was originally filed with the Securities and Exchange Commission on April 3, 2018 (the "Original Filing"), solely to correct the number of shares of the Company's common stock outstanding as of March 29, 2018 as disclosed on the cover page of the Original Filing. The number of outstanding shares of the Company's common stock disclosed in the Original Filing inadvertently included 11,878,040 treasury shares that were issued but were not outstanding. Therefore, the number of shares of the Company's common stock outstanding as of March 29, 2018 was 854,098,314. Pursuant to Rule 12b-15 under Securities Exchange Act of 1934, as amended, this Form 10-K/A also contains new Rule 13a-14(a)/15d-14(a) Certifications, which are attached hereto. Because no financial statements have been amended by or included in this Form 10-K/A and this Form 10-K/A does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4 and 5 of the certifications have been omitted. This Form 10-K/A does not change or update any of the other disclosures contained in the Original Filing, including, without limitation, the total number of outstanding shares of common stock otherwise disclosed within the body of the Original Filing.
Current Fiscal Year End Date	--02-03
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 21.1
Entity Common Stock, Shares Outstanding		854,098,314
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY

Description of changes contained within amended document.

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