Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended
	May 05, 2018	Apr. 29, 2017
Income Statement [Abstract]
Net sales	$ 5,541	$ 5,350
Net Earnings from Credit Operations	157	161
Cost of sales	(3,382)	(3,303)
Selling, general and administrative expenses	(2,083)	(2,057)
Gains on sale of real estate	24	68
Impairments and other costs	(19)	0
Operating income (loss)	238	219
Non-Service Cost Pension, SERP and OPEB	11	13
Interest expense	(71)	(86)
Net premiums on early retirement of debt	0	(3)
Interest income	5	2
Income (loss) before income taxes	183	145
Federal, state and local income tax expense	(52)	(68)
Net income (loss)	131	77
Net loss attributable to noncontrolling interest	8	1
Net income (loss) attributable to Macy's, Inc. shareholders	$ 139	$ 78
Basic earnings per share attributable to Macy's, Inc. shareholders	$ 0.45	$ 0.26
Diluted earnings per share attributable to Macy's, Inc. shareholders	$ 0.45	$ 0.26