| Document And Entity Information | Feb. 21, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 21, 2023 |
| Entity Registrant Name | ContextLogic Inc. |
| Entity Central Index Key | 0001822250 |
| Entity Emerging Growth Company | false |
| Securities Act File Number | 001-39775 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 27-2930953 |
| Entity Address, Address Line One | ONE SANSOME STREET 33RD FLOOR |
| Entity Address, City or Town | SAN FRANCISCO |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94104 |
| City Area Code | (415) |
| Local Phone Number | 432-7323 |
| Entity Information, Former Legal or Registered Name | N/A |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common Stock, $0.0001 par value |
| Trading Symbol | WISH |
| Security Exchange Name | NASDAQ |
