Document and Entity Information - USD ($)	12 Months Ended
	Feb. 01, 2020	Feb. 29, 2020	Aug. 03, 2019
Cover page.
Document Fiscal Year Focus	2019
Documents Incorporated by Reference	Proxy Statement for the Annual Meeting of Stockholders to be held May 15, 2020
Document Transition Report	false
Document Annual Report	true
Title of 12(b) Security	Common Stock, $.01 par value per share
Entity Incorporation, State or Country Code	DE
Document Type	10-K
Amendment Flag	false
Document Period End Date	Feb. 01, 2020
Document Fiscal Period Focus	FY
Trading Symbol	M
Entity Registrant Name	Macy's, Inc.
Entity Central Index Key	0000794367
Current Fiscal Year End Date	--02-01
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		309,645,426
Entity Well-known Seasoned Issuer	Yes
Entity Public Float			$ 6,576,798,072
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Voluntary Filers	No
Entity File Number	1-13536
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	212
Local Phone Number	494-1602
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes