Segment Information - Net Sales by Brand and Region (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Feb. 01, 2020	Nov. 02, 2019	Aug. 03, 2019	May 04, 2019	Feb. 02, 2019	Nov. 03, 2018	Aug. 04, 2018	May 05, 2018	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018
Segment Reporting Information [Line Items]
Athleta Net Sales									$ 978	$ 881	$ 737
Document Period End Date									Feb. 01, 2020
Revenues	$ 4,674	$ 3,998	$ 4,005	$ 3,706	$ 4,623	$ 4,089	$ 4,085	$ 3,783	$ 16,383	$ 16,580	$ 15,855
Percentage Of Net Sales									100.00%	100.00%	100.00%
U.S.
Segment Reporting Information [Line Items]
Revenues									$ 13,398	$ 13,340	$ 12,568
Percentage Of Net Sales									82.00%	81.00%	80.00%
Canada
Segment Reporting Information [Line Items]
Revenues									$ 1,153	$ 1,193	$ 1,173
Percentage Of Net Sales									7.00%	7.00%	7.00%
Europe
Segment Reporting Information [Line Items]
Revenues									$ 539	$ 603	$ 641
Percentage Of Net Sales									3.00%	4.00%	4.00%
Asia
Segment Reporting Information [Line Items]
Revenues									$ 1,084	$ 1,233	$ 1,263
Percentage Of Net Sales									7.00%	7.00%	8.00%
Other Regions
Segment Reporting Information [Line Items]
Revenues									$ 209	$ 211	$ 210
Percentage Of Net Sales									1.00%	1.00%	1.00%
Old Navy [Member]
Segment Reporting Information [Line Items]
Revenues									$ 7,983	$ 7,840	$ 7,238
Old Navy [Member] | U.S.
Segment Reporting Information [Line Items]
Revenues									7,259	7,134	6,570
Old Navy [Member] | Canada
Segment Reporting Information [Line Items]
Revenues									587	584	547
Old Navy [Member] | Europe
Segment Reporting Information [Line Items]
Revenues									0	0	0
Old Navy [Member] | Asia
Segment Reporting Information [Line Items]
Revenues									45	50	50
Old Navy [Member] | Other Regions
Segment Reporting Information [Line Items]
Revenues									92	72	71
Gap Global
Segment Reporting Information [Line Items]
Revenues									4,634	5,160	5,318
Gap Global | U.S.
Segment Reporting Information [Line Items]
Revenues									2,723	2,990	3,065
Gap Global | Canada
Segment Reporting Information [Line Items]
Revenues									349	379	398
Gap Global | Europe
Segment Reporting Information [Line Items]
Revenues									525	589	626
Gap Global | Asia
Segment Reporting Information [Line Items]
Revenues									943	1,089	1,117
Gap Global | Other Regions
Segment Reporting Information [Line Items]
Revenues									94	113	112
Banana Republic Global
Segment Reporting Information [Line Items]
Revenues									2,539	2,456	2,380
Banana Republic Global | U.S.
Segment Reporting Information [Line Items]
Revenues									2,191	2,095	2,017
Banana Republic Global | Canada
Segment Reporting Information [Line Items]
Revenues									215	227	225
Banana Republic Global | Europe
Segment Reporting Information [Line Items]
Revenues									14	14	15
Banana Republic Global | Asia
Segment Reporting Information [Line Items]
Revenues									96	94	96
Banana Republic Global | Other Regions
Segment Reporting Information [Line Items]
Revenues									23	26	27
Other entities
Segment Reporting Information [Line Items]
Revenues									1,227	1,124	919
Other entities | U.S.
Segment Reporting Information [Line Items]
Revenues									1,225	1,121	916
Other entities | Canada
Segment Reporting Information [Line Items]
Revenues									2	3	3
Other entities | Europe
Segment Reporting Information [Line Items]
Revenues									0	0	0
Other entities | Asia
Segment Reporting Information [Line Items]
Revenues									0	0	0
Other entities | Other Regions
Segment Reporting Information [Line Items]
Revenues									$ 0	$ 0	$ 0