| Cover Page Cover Page | Oct. 05, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 5, 2020 |
| Entity Registrant Name | THE GAP, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-7562 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.05 par value |
| Trading Symbol | GPS |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000039911 |
| Amendment Flag | false |
