Revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 02, 2025	Aug. 03, 2024	Aug. 02, 2025	Aug. 03, 2024	Feb. 01, 2025
Disaggregation of Revenue [Line Items]
Percentage of net sales revenue	96.00%	97.00%	96.00%	97.00%
Macy's sales to total company sales percentage	84.00%	85.00%	83.00%	85.00%
Percentage of digital sales	31.00%	29.00%	32.00%	31.00%
Contract with customer, refund liability	$ 129	$ 120	$ 129	$ 120	$ 114
Contract with customer, right to recover product	82	75	82	75	72
Contract with customer, liability, current	$ 301	$ 334	$ 301	$ 334	$ 353
Credit Card Intermediary
Disaggregation of Revenue [Line Items]
Agreement renewal option number of years			3 years