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DISPOSAL OF BUSINESS (Details) - USD ($) $ in Millions			3 Months Ended			4 Months Ended	12 Months Ended
	Apr. 26, 2019	Mar. 13, 2019	Jan. 30, 2021	Feb. 01, 2020	Nov. 09, 2019	May 25, 2019	Jan. 30, 2021	Feb. 01, 2020	Feb. 02, 2019
HELD FOR SALE
Gain on sale of businesses						$ 176		$ 176	$ 1,782
Asset Impairment Charges			$ 0	$ 0					0
Impairment of finance lease assets							$ 2	40
Other long-lived asset impairment charge							$ 70	120	$ 56
You Technology business unit | Disposed by Sale
HELD FOR SALE
Consideration for sale		$ 565
Proceeds received upon closing		396
Preferred equity		64
Other cash consideration		$ 105
Other cash consideration receivable period		5 years
Gain on sale of businesses		$ 70				70
Gain on sale of business, net of tax		52				52
You Technology business unit | Disposed by Sale | Other current liabilities and Other long-term liabilities
HELD FOR SALE
Fair value of long-term service agreement		$ 358
Term to be recorded as sales		10 years
Turkey Hill Dairy Business | Disposed by Sale
HELD FOR SALE
Proceeds received upon closing	$ 225
Gain on sale of businesses	106					106
Gain on sale of business, net of tax	$ 80					$ 80
Lucky's Market | Disposal Group, Disposed of by Means Other than Sale
HELD FOR SALE
Asset Impairment Charges					$ 238
Impairment of property, plant and equipment					200
Impairment of finance lease assets					40
Goodwill impairment charge					19
Operating Lease, Impairment Loss					11			11
Other long-lived asset impairment charge					8
Non-cash charges, before tax				174
Non-cash charges, net of tax				$ 125
Impairment charges attributable to The Kroger Co.					131			305
Impairment charges attributable to The Kroger Co., net of tax					$ 100			$ 225

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