Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Feb. 01, 2020	Mar. 11, 2020	Aug. 02, 2019
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Document Period End Date	Feb. 01, 2020
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Trading Symbol	GPS
Entity Registrant Name	GAP, INC
Entity Central Index Key	0000039911
Current Fiscal Year End Date	--02-01
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		371,301,527
Entity Public Float			$ 4
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No