Segment Information - Net Sales by Brand and Region (Details) - USD ($) $ in Millions		3 Months Ended
		Apr. 30, 2016		May. 02, 2015
Segment Reporting Information [Line Items]
Net sales		$ 3,438		$ 3,657
Percentage of Net Sales		100.00%		100.00%
Sales growth (decline)		(6.00%)		(3.00%)
U.S.
Segment Reporting Information [Line Items]
Net sales	[1]	$ 2,658		$ 2,828
Percentage of Net Sales	[1]	77.00%		77.00%
Canada
Segment Reporting Information [Line Items]
Net sales		$ 216		$ 224
Percentage of Net Sales		6.00%		6.00%
Europe
Segment Reporting Information [Line Items]
Net sales		$ 158		$ 181
Percentage of Net Sales		5.00%		5.00%
Asia
Segment Reporting Information [Line Items]
Net sales		$ 356		$ 355
Percentage of Net Sales		11.00%		10.00%
Other Regions
Segment Reporting Information [Line Items]
Net sales		$ 50		$ 69
Percentage of Net Sales		1.00%		2.00%
Gap
Segment Reporting Information [Line Items]
Net sales		$ 1,223		$ 1,308
Sales growth (decline)		(6.00%)		(9.00%)
Gap | U.S.
Segment Reporting Information [Line Items]
Net sales	[1]	$ 698		$ 735
Gap | Canada
Segment Reporting Information [Line Items]
Net sales		70		69
Gap | Europe
Segment Reporting Information [Line Items]
Net sales		144		164
Gap | Asia
Segment Reporting Information [Line Items]
Net sales		280		285
Gap | Other Regions
Segment Reporting Information [Line Items]
Net sales		31		55
Old Navy
Segment Reporting Information [Line Items]
Net sales		$ 1,486		$ 1,552
Sales growth (decline)		(4.00%)		5.00%
Old Navy | U.S.
Segment Reporting Information [Line Items]
Net sales	[1]	$ 1,328		$ 1,403
Old Navy | Canada
Segment Reporting Information [Line Items]
Net sales		98		102
Old Navy | Europe
Segment Reporting Information [Line Items]
Net sales		0		0
Old Navy | Asia
Segment Reporting Information [Line Items]
Net sales		50		43
Old Navy | Other Regions
Segment Reporting Information [Line Items]
Net sales		10		4
Banana Republic
Segment Reporting Information [Line Items]
Net sales		$ 550		$ 621
Sales growth (decline)		(11.00%)		(7.00%)
Banana Republic | U.S.
Segment Reporting Information [Line Items]
Net sales	[1]	$ 454		$ 515
Banana Republic | Canada
Segment Reporting Information [Line Items]
Net sales		47		52
Banana Republic | Europe
Segment Reporting Information [Line Items]
Net sales		14		17
Banana Republic | Asia
Segment Reporting Information [Line Items]
Net sales		26		27
Banana Republic | Other Regions
Segment Reporting Information [Line Items]
Net sales		9		10
Other
Segment Reporting Information [Line Items]
Net sales		$ 179	[2]	$ 176	[3]
Sales growth (decline)		2.00%	[2]	(4.00%)	[3]
Other | U.S.
Segment Reporting Information [Line Items]
Net sales	[1]	$ 178	[2]	$ 175	[3]
Other | Canada
Segment Reporting Information [Line Items]
Net sales		1	[2]	1	[3]
Other | Europe
Segment Reporting Information [Line Items]
Net sales		0	[2]	0	[3]
Other | Asia
Segment Reporting Information [Line Items]
Net sales		0	[2]	0	[3]
Other | Other Regions
Segment Reporting Information [Line Items]
Net sales		$ 0	[2]	$ 0	[3]

[1] U.S. includes the United States, Puerto Rico, and Guam.

[2] Includes Athleta and Intermix.

[3] Includes Athleta, Intermix, and Piperlime.