QUARTERLY DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	4 Months Ended	12 Months Ended
Feb. 03, 2018	Nov. 04, 2017	Aug. 12, 2017	Jan. 28, 2017	Nov. 05, 2016	Aug. 13, 2016	May 20, 2017	May 21, 2016	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
QUARTERLY DATA (UNAUDITED)
Fiscal Period Duration	91 days	84 days	84 days	84 days	84 days	84 days	112 days	112 days	371 days	364 days	364 days
Sales	$ 31,031	$ 27,749	$ 27,597	$ 27,611	$ 26,557	$ 26,565	$ 36,285	$ 34,604	$ 122,662	$ 115,337	$ 109,830
Merchandise costs, including advertising, warehousing, and transportation, excluding items shown separately below	24,240	21,532	21,609	21,483	20,653	20,697	28,281	26,669	95,662	89,502	85,496
Operating, general and administrative	5,962	4,708	4,523	4,483	4,443	4,473	6,376	5,779	21,568	19,178	17,946
Rent	220	196	225	215	199	205	270	262	911	881	723
Depreciation and amortization	565	573	562	572	549	525	736	694	2,436	2,340	2,089
Operating profit	44	740	678	858	713	665	622	1,200	2,085	3,436	3,576
Interest expense	148	136	138	126	124	116	177	155	601	522	482
Net earnings before income tax (benefit) expense	(104)	604	540	732	589	549	445	1,045	1,484	2,914	3,094
Income tax (benefit) expense	(957)	215	189	230	206	171	148	350	(405)	957	1,045
Net earnings including noncontrolling interests	853	389	351	502	383	378	297	695	1,889	1,957	2,049
Net loss attributable to noncontrolling interests	(1)	(8)	(2)	(4)	(8)	(5)	(6)	(1)	(18)	(18)	10
Net earnings attributable to The Kroger Co.	$ 854	$ 397	$ 353	$ 506	$ 391	$ 383	$ 303	$ 696	$ 1,907	$ 1,975	$ 2,039
Net earnings attributable to The Kroger Co. per basic common share	$ 0.97	$ 0.44	$ 0.39	$ 0.54	$ 0.41	$ 0.40	$ 0.33	$ 0.72	$ 2.11	$ 2.08	$ 2.09
Average number of common shares used in basic calculation	875	887	897	929	940	943	914	954	895	942	966
Net earnings attributable to The Kroger Co. per diluted common share	$ 0.96	$ 0.44	$ 0.39	$ 0.53	$ 0.41	$ 0.40	$ 0.32	$ 0.71	$ 2.09	$ 2.05	$ 2.06
Average number of common shares used in diluted calculation	884	893	905	943	953	959	925	966	904	958	980
Dividends declared per common share	$ 0.125	$ 0.125	$ 0.125	$ 0.120	$ 0.120	$ 0.120	$ 0.120	$ 0.105	$ 0.495	$ 0.465	$ 0.408

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line, excluding rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses.

No definition available.