Net Sales by Brand and Region (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	$ 4,211	$ 3,275	$ 8,202	$ 5,382
Old Navy
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	2,390	1,881	4,670	2,919
Gap
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	974	783	1,860	1,307
Banana Republic [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	495	283	884	572
Athleta [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	341	267	688	472
Other entities [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	11	61	100	112
U.S.
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	3,571	2,763	6,995	4,524
U.S. | Old Navy
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	2,177	1,726	4,276	2,675
U.S. | Gap
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	615	473	1,171	784
U.S. | Banana Republic [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	428	236	761	481
U.S. | Athleta [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	340	267	687	472
U.S. | Other entities [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	11	61	100	112
Canada
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	313	235	574	370
Canada | Old Navy
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	191	145	350	222
Canada | Gap
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	79	63	147	97
Canada | Banana Republic [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	43	27	77	51
Canada | Athleta [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	0	0	0	0
Canada | Other entities [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	0	0	0	0
Europe
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	118	72	190	129
Europe | Old Navy
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	0	0	0	0
Europe | Gap
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	116	70	185	124
Europe | Banana Republic [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	1	2	4	5
Europe | Athleta [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	1	0	1	0
Europe | Other entities [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	0	0	0	0
Asia
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	154	174	334	295
Asia | Old Navy
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	0	2	1	3
Asia | Gap
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	135	158	298	266
Asia | Banana Republic [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	19	14	35	26
Asia | Athleta [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	0	0	0	0
Asia | Other entities [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	0	0	0	0
Other Regions
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	55	31	109	64
Other Regions | Old Navy
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	22	8	43	19
Other Regions | Gap
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	29	19	59	36
Other Regions | Banana Republic [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	4	4	7	9
Other Regions | Athleta [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	0	0	0	0
Other Regions | Other entities [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales	$ 0	$ 0	$ 0	$ 0