Revenue (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019	Feb. 01, 2020
Net sales	$ 3,990	$ 5,173	$ 10,566	$ 16,223
Contract with Customer, Liability, Current	$ 639	$ 705	$ 639	$ 705	$ 839
Macy's sales to total Company sales	88.00%	87.00%	88.00%	88.00%
Contract with Customer, Refund Liability	$ 182	$ 245	$ 182	$ 245	213
Contract with Customer, Right to Recover Product	116	164	116	164	$ 147
Women's Accessories, Intimate Apparel, Shoes and Cosmetics [Member]
Net sales	1,677	1,960	4,273	6,152
Women's Apparel [Member]
Net sales	690	1,197	1,895	3,779
Men's and Kids' [Member]
Net sales	790	1,195	2,089	3,663
Home/Other [Member]
Net sales	833	821	2,309	2,629
Total Sales - All Categories [Member]
Net sales	$ 3,990	$ 5,173	$ 10,566	$ 16,223

% of Macy's sales to total Company sales

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

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