Impairment, Restructuring and Other Costs - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
May 01, 2021	May 02, 2020
Restructuring Cost And Reserve [Line Items]
Impairments	$ 18	$ 3,150
Goodwill impairment, COVID-19		3,070
Tangible Asset Impairment, COVID-19		80
Macy's Reporting Unit
Restructuring Cost And Reserve [Line Items]
Goodwill impairment, COVID-19		2,972
Bluemercury Reporting Unit
Restructuring Cost And Reserve [Line Items]
Goodwill impairment, COVID-19		$ 98

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration