Cover Page Document - USD ($) $ in Billions	12 Months Ended
	Jan. 30, 2021	Mar. 10, 2021	Jul. 31, 2020
Cover Page [Abstract]
Document Transition Report	false
Document Annual Report	true
Title of 12(b) Security	Common Stock, $0.05 par value
Entity Incorporation, State or Country Code	DE
Document Type	10-K
Document Period End Date	Jan. 30, 2021
Entity File Number	1-7562
Entity Filer Category	Large Accelerated Filer
Entity Registrant Name	GAP, INC
Entity Tax Identification Number	94-1697231
Entity Address, Address Line One	Two Folsom Street
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94105
City Area Code	415
Local Phone Number	427-0100
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Public Float			$ 3
Entity Common Stock, Shares Outstanding		374,851,573
Trading Symbol	GPS
Security Exchange Name	NYSE
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true