Revenue (Details) - USD ($) $ in Millions	3 Months Ended
May 02, 2020	May 04, 2019	Feb. 01, 2020
Net sales	$ 3,017	$ 5,504
Contract with Customer, Liability, Current	$ 732	$ 696	$ 839
Macy's sales to total Company sales	87.00%	88.00%
Contract with Customer, Refund Liability	$ 184	$ 294	269
Contract with Customer, Right to Recover Product	130	200	$ 147
Women's Accessories, Intimate Apparel, Shoes and Cosmetics [Member]
Net sales	1,215	2,152
Women's Apparel [Member]
Net sales	579	1,313
Men's and Children's [Member]
Net sales	573	1,202
Home and Miscellaneous [Member]
Net sales	650	837
Total Sales - All Categories [Member]
Net sales	$ 3,017	$ 5,504

% of Macy's sales to total Company sales

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 55
-Paragraph 27
-URI http://asc.fasb.org/extlink&oid=118944142&loc=SL49130611-203046-203046

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Amount of right to recover product from customer on settling refund liability.

+ References

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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