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Goodwill and Other Intangible Assets - Narrative (Details)
$ in Millions
 9 Months Ended
Oct. 31, 2020
USD ($)
Goodwill impairment, COVID-19 $ 3,080
Macy's Reporting Unit  
Goodwill impairment, COVID-19 2,982
Bluemercury Reporting Unit  
Goodwill impairment, COVID-19 $ 98