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QUARTERLY DATA (UNAUDITED) - NARRATIVE (Details) $ in Millions |  |  | 3 Months Ended | 4 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Apr. 26, 2019 USD ($) | Mar. 13, 2019 USD ($) | Jan. 30, 2021 USD ($) | Nov. 07, 2020 USD ($) | Aug. 15, 2020 USD ($) | Feb. 01, 2020 USD ($) store | Nov. 09, 2019 USD ($) | Aug. 17, 2019 USD ($) | May 23, 2020 USD ($) | May 25, 2019 USD ($) | Jan. 30, 2021 USD ($) | Feb. 01, 2020 USD ($) store | Feb. 02, 2019 USD ($)
Quarterly Data |  |  |  |  |  |  |  |  |  |  |  |  |
Severance expenses, before tax |  |  |  |  |  |  | $ 80 |  |  |  |  | $ 80 |
Severance expenses, net of tax |  |  |  |  |  |  | 61 |  |  |  |  | 61 |
Revaluation of contingent consideration |  |  | $ 80 | $ 24 | $ 25 | $ (51) | 4 | $ 2 | $ 60 | $ (24) | $ 189 | $ (69) | $ 33
Revaluation of contingent consideration, net of tax |  |  | 61 | 17 | 19 | (36) | 3 | 2 | 44 | (18) |  |  |
Transformation cost before tax |  |  | 11 | 33 | 29 | 52 |  |  | 38 |  |  |  |
Transformation cost net of tax |  |  | 8 | 24 | 21 | $ 37 |  |  | 28 |  |  |  |
Number of planned store closures | store |  |  |  |  |  | 35 |  |  |  |  |  | 35 |
Gain on sale of businesses |  |  |  |  |  |  |  |  |  | 176 |  | $ 176 | 1,782
Gain on investments |  |  | 153 | 162 | 368 | $ (9) | 106 | (45) | 422 | 106 | $ 1,105 | 157 | 228
Mark to market gain (loss) on Ocado securities, net of tax |  |  | 116 | $ 115 | $ 278 | (6) | 81 | (36) | $ 312 | 80 |  |  |
Asset Impairment Charges |  |  | 0 |  |  | 0 |  |  |  |  |  |  | 0
Turkey Hill Dairy Business | Disposed by Sale |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly Data |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale of businesses | $ 106 |  |  |  |  |  |  |  |  | 106 |  |  |
Gain on sale of business, net of tax | $ 80 |  |  |  |  |  |  |  |  | 80 |  |  |
You Technology business unit | Disposed by Sale |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly Data |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale of businesses |  | $ 70 |  |  |  |  |  |  |  | 70 |  |  |
Gain on sale of business, net of tax |  | $ 52 |  |  |  |  |  |  |  | 52 |  |  |
Lucky's Market | Disposal Group, Disposed of by Means Other than Sale |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly Data |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Charges |  |  |  |  |  |  | 238 |  |  |  |  |  |
Impairment charges attributable to The Kroger Co. |  |  |  |  |  |  | 131 |  |  |  |  | 305 |
Impairment charges attributable to The Kroger Co., net of tax |  |  |  |  |  |  | 100 |  |  |  |  | 225 |
Non-cash charges, before tax |  |  |  |  |  | 174 |  |  |  |  |  |  |
Non-cash charges, net of tax |  |  |  |  |  | 125 |  |  |  |  |  |  |
Pension Benefits |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly Data |  |  |  |  |  |  |  |  |  |  |  |  |
Charge (before-tax) related to pension plan agreements |  |  | 989 |  |  | 4 | 45 | 27 |  | 59 |  | 135 | 155
Charge (after-tax) related to pension plan agreements |  |  | $ 754 |  |  | $ 3 | $ 35 | $ 22 |  | $ 44 |  | $ 104 | $ 121

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