Segment Information - Net Sales by Brand and Region (Details) - USD ($)	12 Months Ended
	Jan. 30, 2021	Feb. 01, 2020	Feb. 02, 2019
Segment Reporting Information [Line Items]
Revenues	$ 13,800,000,000	$ 16,383,000,000	$ 16,580,000,000
U.S.
Segment Reporting Information [Line Items]
Revenues	11,650,000,000	13,398,000,000	13,340,000,000
Canada
Segment Reporting Information [Line Items]
Revenues	972,000,000	1,153,000,000	1,193,000,000
Europe
Segment Reporting Information [Line Items]
Revenues	329,000,000	539,000,000	603,000,000
Asia
Segment Reporting Information [Line Items]
Revenues	710,000,000	1,084,000,000	1,233,000,000
Other Regions
Segment Reporting Information [Line Items]
Revenues	139,000,000	209,000,000	211,000,000
Old Navy [Member]
Segment Reporting Information [Line Items]
Revenues	7,536,000,000	7,983,000,000	7,840,000,000
Old Navy [Member] | U.S.
Segment Reporting Information [Line Items]
Revenues	6,898,000,000	7,259,000,000	7,134,000,000
Old Navy [Member] | Canada
Segment Reporting Information [Line Items]
Revenues	578,000,000	587,000,000	584,000,000
Old Navy [Member] | Europe
Segment Reporting Information [Line Items]
Revenues	0	0	0
Old Navy [Member] | Asia
Segment Reporting Information [Line Items]
Revenues	4,000,000	45,000,000	50,000,000
Old Navy [Member] | Other Regions
Segment Reporting Information [Line Items]
Revenues	56,000,000	92,000,000	72,000,000
Gap Global
Segment Reporting Information [Line Items]
Revenues	3,388,000,000	4,634,000,000	5,160,000,000
Gap Global | U.S.
Segment Reporting Information [Line Items]
Revenues	2,099,000,000	2,723,000,000	2,990,000,000
Gap Global | Canada
Segment Reporting Information [Line Items]
Revenues	261,000,000	349,000,000	379,000,000
Gap Global | Europe
Segment Reporting Information [Line Items]
Revenues	319,000,000	525,000,000	589,000,000
Gap Global | Asia
Segment Reporting Information [Line Items]
Revenues	642,000,000	943,000,000	1,089,000,000
Gap Global | Other Regions
Segment Reporting Information [Line Items]
Revenues	67,000,000	94,000,000	113,000,000
Old Navy Global
Segment Reporting Information [Line Items]
Revenues	1,135,000,000	978,000,000	881,000,000
Banana Republic Global
Segment Reporting Information [Line Items]
Revenues	1,462,000,000	2,539,000,000	2,456,000,000
Banana Republic Global | U.S.
Segment Reporting Information [Line Items]
Revenues	1,242,000,000	2,191,000,000	2,095,000,000
Banana Republic Global | Canada
Segment Reporting Information [Line Items]
Revenues	130,000,000	215,000,000	227,000,000
Banana Republic Global | Europe
Segment Reporting Information [Line Items]
Revenues	10,000,000	14,000,000	14,000,000
Banana Republic Global | Asia
Segment Reporting Information [Line Items]
Revenues	64,000,000	96,000,000	94,000,000
Banana Republic Global | Other Regions
Segment Reporting Information [Line Items]
Revenues	16,000,000	23,000,000	26,000,000
Other entities
Segment Reporting Information [Line Items]
Revenues	1,414,000,000	1,227,000,000	1,124,000,000
Other entities | U.S.
Segment Reporting Information [Line Items]
Revenues	1,411,000,000	1,225,000,000	1,121,000,000
Other entities | Canada
Segment Reporting Information [Line Items]
Revenues	3,000,000	2,000,000	3,000,000
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