Revenue (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Aug. 03, 2019	Aug. 04, 2018	Aug. 03, 2019	Aug. 04, 2018	Feb. 02, 2019
Net sales	$ 5,546	$ 5,572	$ 11,050	$ 11,112
Contract with Customer, Liability, Current	$ 654	$ 673	$ 654	$ 673	$ 856
Macy's sales to total Company sales	88.00%	89.00%	88.00%	88.00%
Contract with Customer, Refund Liability	$ 227	$ 243	$ 227	$ 243	269
Contract with Customer, Right to Recover Product	154	165	154	165	$ 188
Women's Accessories, Intimate Apparel, Shoes and Cosmetics [Member]
Net sales	2,039	2,022	4,191	4,181
Women's Apparel [Member]
Net sales	1,269	1,322	2,582	2,672
Men's and Children's [Member]
Net sales	1,266	1,273	2,468	2,447
Home and Miscellaneous [Member]
Net sales	972	955	1,809	1,812
Total Sales - All Categories [Member]
Net sales	$ 5,546	$ 5,572	$ 11,050	$ 11,112

% 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
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