Document and Entity Information - shares	9 Months Ended
	Oct. 31, 2020	Nov. 28, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Oct. 31, 2020
Entity File Number	1-13536
Entity Registrant Name	Macy's, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	13-3324058
Entity Address, Address Line One	151 West 34th Street
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10001
City Area Code	513
Local Phone Number	579-7780
Title of 12(b) Security	Common Stock, $.01 par value per share
Trading Symbol	M
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000794367
Current Fiscal Year End Date	--01-30
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		310,477,909