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Impairment, Restructuring and Other Costs - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 01, 2020
Aug. 03, 2019
Aug. 01, 2020
Aug. 03, 2019
Restructuring Cost and Reserve [Line Items]        
Tangible asset impairment, COVID-19     $ 80  
Goodwill impairment, COVID-19     3,080  
Restructuring expense, COVID-19 $ 154      
Impairments 15 $ 1 3,164 $ 1
Macy's Reporting Unit        
Restructuring Cost and Reserve [Line Items]        
Goodwill impairment, COVID-19 $ 10   2,982  
Bluemercury Reporting Unit        
Restructuring Cost and Reserve [Line Items]        
Goodwill impairment, COVID-19     $ 98