Segment Information - Net Sales by Brand and Region (Details) - USD ($) $ in Millions	3 Months Ended
	May 02, 2020	May 04, 2019
Segment Reporting Information [Line Items]
Net Sales	$ 2,107	$ 3,706
U.S.
Segment Reporting Information [Line Items]
Net Sales	1,761	3,022
Canada
Segment Reporting Information [Line Items]
Net Sales	135	245
Europe
Segment Reporting Information [Line Items]
Net Sales	57	124
Asia
Segment Reporting Information [Line Items]
Net Sales	121	269
Other Regions
Segment Reporting Information [Line Items]
Net Sales	33	46
Athleta [Member]
Segment Reporting Information [Line Items]
Net Sales	205	223
Gap
Segment Reporting Information [Line Items]
Net Sales	524	1,052
Gap | U.S.
Segment Reporting Information [Line Items]
Net Sales	311	608
Gap | Canada
Segment Reporting Information [Line Items]
Net Sales	34	69
Gap | Europe
Segment Reporting Information [Line Items]
Net Sales	54	121
Gap | Asia
Segment Reporting Information [Line Items]
Net Sales	108	233
Gap | Other Regions
Segment Reporting Information [Line Items]
Net Sales	17	21
Banana Republic [Member]
Segment Reporting Information [Line Items]
Net Sales	289	568
Banana Republic [Member] | U.S.
Segment Reporting Information [Line Items]
Net Sales	245	487
Banana Republic [Member] | Canada
Segment Reporting Information [Line Items]
Net Sales	24	47
Banana Republic [Member] | Europe
Segment Reporting Information [Line Items]
Net Sales	3	3
Banana Republic [Member] | Asia
Segment Reporting Information [Line Items]
Net Sales	12	26
Banana Republic [Member] | Other Regions
Segment Reporting Information [Line Items]
Net Sales	5	5
Other entities [Member]
Segment Reporting Information [Line Items]
Net Sales	256	287
Other entities [Member] | U.S.
Segment Reporting Information [Line Items]
Net Sales	256	286
Other entities [Member] | Canada
Segment Reporting Information [Line Items]
Net Sales	0	1
Other entities [Member] | Europe
Segment Reporting Information [Line Items]
Net Sales	0	0
Other entities [Member] | Asia
Segment Reporting Information [Line Items]
Net Sales	0	0
Other entities [Member] | Other Regions
Segment Reporting Information [Line Items]
Net Sales	0	0
Old Navy
Segment Reporting Information [Line Items]
Net Sales	1,038	1,799
Old Navy | U.S.
Segment Reporting Information [Line Items]
Net Sales	949	1,641
Old Navy | Canada
Segment Reporting Information [Line Items]
Net Sales	77	128
Old Navy | Europe
Segment Reporting Information [Line Items]
Net Sales	0	0
Old Navy | Asia
Segment Reporting Information [Line Items]
Net Sales	1	10
Old Navy | Other Regions
Segment Reporting Information [Line Items]
Net Sales	$ 11	$ 20