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Restructuring, Impairment, Store Closing and Other Costs - Narrative (Details) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 04, 2020 Store | Aug. 01, 2020 USD ($) | May 02, 2020 USD ($) | Jan. 30, 2021 USD ($) Store | Feb. 01, 2020 USD ($) Store | Feb. 02, 2019 USD ($) Store | Feb. 03, 2018 USD ($)
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Asset Impairments |  |  |  | $ 3,280 | $ 197 | $ 64 |
Goodwill impairment, COVID-19 |  |  |  | 3,080 |  |  |
Tangible Asset Impairment, COVID-19 |  |  |  | $ 200 |  |  |
Restructuring expense, COVID-19 |  | $ 154 |  |  |  |  |
Number of stores closed | Store |  |  |  | 37 | 30 | 10 |
Planned store closings | Store | 125 |  |  |  |  |  |
Restructuring |  |  |  | $ 224 | $ 123 | $ 80 | $ 80
Macy's Reporting Unit |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Goodwill impairment, COVID-19 |  |  | $ 2,982 | 2,982 |  |  |
Bluemercury Reporting Unit |  |  |  |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |  |  |  |
Goodwill impairment, COVID-19 |  |  | $ 98 | $ 98 |  |  |

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