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Condensed Consolidating Financial Information (Condensed Consolidating Statement of Operations) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 28, 2017 | Oct. 29, 2016 | Jul. 30, 2016 | Apr. 30, 2016 | Jan. 30, 2016 | Oct. 31, 2015 | Aug. 01, 2015 | May 02, 2015 | Jan. 28, 2017 | Jan. 30, 2016 | Jan. 31, 2015
Net sales | $ 8,515 | $ 5,626 | $ 5,866 | $ 5,771 | $ 8,869 | $ 5,874 | $ 6,104 | $ 6,232 | $ 25,778 | $ 27,079 | $ 28,105
Cost of sales | (5,251) | (3,386) | (3,468) | (3,516) | (5,549) | (3,537) | (3,610) | (3,800) | (15,621) | (16,496) | (16,863)
Gross margin | 3,264 | 2,240 | 2,398 | 2,255 | 3,320 | 2,337 | 2,494 | 2,432 | 10,157 | 10,583 | 11,242
Selling, general and administrative expenses | (2,202) | (2,071) | (2,026) | (1,966) | (2,207) | (1,968) | (2,058) | (2,023) | (8,265) | (8,256) | (8,355)
Impairments, store closing and other costs | (230) | 0 | (249) | 0 | (177) | (111) | 0 | 0 | (479) | (288) | (87)
Settlement charges | (17) | (62) | (6) | (13) |  |  |  |  | (98) | 0 | 0
Operating income (loss) |  |  |  |  |  |  |  |  | 1,315 | 2,039 | 2,800
Interest (expense) income, net |  |  |  |  |  |  |  |  |  |  |
External |  |  |  |  |  |  |  |  | (363) | (361) | (393)
Intercompany |  |  |  |  |  |  |  |  | 0 | 0 | 0
Premium on early retirement of debt |  |  |  |  |  |  |  |  | 0 | 0 | (17)
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 952 | 1,678 | 2,390
Federal, state and local income tax benefit (expense) |  |  |  |  |  |  |  |  | (341) | (608) | (864)
Net income (loss) |  |  |  |  |  |  |  |  | 611 | 1,070 | 1,526
Net loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 8 | 2 | 0
Net income attributable to Macy's, Inc. shareholders | $ 475 | $ 17 | $ 11 | $ 116 | $ 544 | $ 118 | $ 217 | $ 193 | 619 | 1,072 | 1,526
Comprehensive income |  |  |  |  |  |  |  |  | 758 | 1,099 | 1,119
Comprehensive loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 8 | 2 | 0
Comprehensive income attributable to Macy's, Inc. shareholders |  |  |  |  |  |  |  |  | 766 | 1,101 | 1,119
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Cost of sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gross margin |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | (2) | (2) | (3)
Impairments, store closing and other costs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Settlement charges |  |  |  |  |  |  |  |  | 0 |  |
Operating income (loss) |  |  |  |  |  |  |  |  | (2) | (2) | (3)
Interest (expense) income, net |  |  |  |  |  |  |  |  |  |  |
External |  |  |  |  |  |  |  |  | 2 | 1 | 1
Intercompany |  |  |  |  |  |  |  |  | 0 | 0 | 0
Premium on early retirement of debt |  |  |  |  |  |  |  |  |  |  | 0
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 619 | 1,072 | 1,528
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 619 | 1,071 | 1,526
Federal, state and local income tax benefit (expense) |  |  |  |  |  |  |  |  | 0 | 1 | 0
Net income (loss) |  |  |  |  |  |  |  |  | 619 | 1,072 | 1,526
Net loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income attributable to Macy's, Inc. shareholders |  |  |  |  |  |  |  |  | 619 | 1,072 | 1,526
Comprehensive income |  |  |  |  |  |  |  |  | 766 | 1,101 | 1,119
Comprehensive loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 0 | 0 | 0
Comprehensive income attributable to Macy's, Inc. shareholders |  |  |  |  |  |  |  |  | 766 | 1,101 | 1,119
Subsidiary Issuer [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 10,677 | 11,959 | 13,078
Cost of sales |  |  |  |  |  |  |  |  | (6,787) | (7,670) | (8,127)
Gross margin |  |  |  |  |  |  |  |  | 3,890 | 4,289 | 4,951
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | (3,739) | (3,980) | (4,351)
Impairments, store closing and other costs |  |  |  |  |  |  |  |  | (295) | (170) | (45)
Settlement charges |  |  |  |  |  |  |  |  | (34) |  |
Operating income (loss) |  |  |  |  |  |  |  |  | (178) | 139 | 555
Interest (expense) income, net |  |  |  |  |  |  |  |  |  |  |
External |  |  |  |  |  |  |  |  | (366) | (361) | (394)
Intercompany |  |  |  |  |  |  |  |  | (200) | (230) | (230)
Premium on early retirement of debt |  |  |  |  |  |  |  |  |  |  | (17)
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 255 | 421 | 624
Income (loss) before income taxes |  |  |  |  |  |  |  |  | (489) | (31) | 538
Federal, state and local income tax benefit (expense) |  |  |  |  |  |  |  |  | 281 | 120 | 25
Net income (loss) |  |  |  |  |  |  |  |  | (208) | 89 | 563
Net loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income attributable to Macy's, Inc. shareholders |  |  |  |  |  |  |  |  | (208) | 89 | 563
Comprehensive income |  |  |  |  |  |  |  |  | (61) | 118 | 156
Comprehensive loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 0 | 0 | 0
Comprehensive income attributable to Macy's, Inc. shareholders |  |  |  |  |  |  |  |  | (61) | 118 | 156
Non-Guarantor Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 23,436 | 24,037 | 23,522
Cost of sales |  |  |  |  |  |  |  |  | (17,169) | (17,743) | (17,231)
Gross margin |  |  |  |  |  |  |  |  | 6,267 | 6,294 | 6,291
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | (4,524) | (4,274) | (4,001)
Impairments, store closing and other costs |  |  |  |  |  |  |  |  | (184) | (118) | (42)
Settlement charges |  |  |  |  |  |  |  |  | (64) |  |
Operating income (loss) |  |  |  |  |  |  |  |  | 1,495 | 1,902 | 2,248
Interest (expense) income, net |  |  |  |  |  |  |  |  |  |  |
External |  |  |  |  |  |  |  |  | 1 | (1) | 0
Intercompany |  |  |  |  |  |  |  |  | 200 | 230 | 230
Premium on early retirement of debt |  |  |  |  |  |  |  |  |  |  | 0
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 1,696 | 2,131 | 2,478
Federal, state and local income tax benefit (expense) |  |  |  |  |  |  |  |  | (622) | (729) | (889)
Net income (loss) |  |  |  |  |  |  |  |  | 1,074 | 1,402 | 1,589
Net loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 8 | 2 | 0
Net income attributable to Macy's, Inc. shareholders |  |  |  |  |  |  |  |  | 1,082 | 1,404 | 1,589
Comprehensive income |  |  |  |  |  |  |  |  | 1,153 | 1,415 | 1,338
Comprehensive loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 8 | 2 | 0
Comprehensive income attributable to Macy's, Inc. shareholders |  |  |  |  |  |  |  |  | 1,161 | 1,417 | 1,338
Consolidation, Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | (8,335) | (8,917) | (8,495)
Cost of sales |  |  |  |  |  |  |  |  | 8,335 | 8,917 | 8,495
Gross margin |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairments, store closing and other costs |  |  |  |  |  |  |  |  | 0 | 0 | 0
Settlement charges |  |  |  |  |  |  |  |  | 0 |  |
Operating income (loss) |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest (expense) income, net |  |  |  |  |  |  |  |  |  |  |
External |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intercompany |  |  |  |  |  |  |  |  | 0 | 0 | 0
Premium on early retirement of debt |  |  |  |  |  |  |  |  |  |  | 0
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | (874) | (1,493) | (2,152)
Income (loss) before income taxes |  |  |  |  |  |  |  |  | (874) | (1,493) | (2,152)
Federal, state and local income tax benefit (expense) |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income (loss) |  |  |  |  |  |  |  |  | (874) | (1,493) | (2,152)
Net loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income attributable to Macy's, Inc. shareholders |  |  |  |  |  |  |  |  | (874) | (1,493) | (2,152)
Comprehensive income |  |  |  |  |  |  |  |  | (1,100) | (1,535) | (1,494)
Comprehensive loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 0 | 0 | 0
Comprehensive income attributable to Macy's, Inc. shareholders |  |  |  |  |  |  |  |  | $ (1,100) | $ (1,535) | $ (1,494)

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