| Document and Entity Information | Feb. 28, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 28, 2022 |
| Entity Registrant Name | PARDES BIOSCIENCES, INC. |
| Entity Central Index Key | 0001822711 |
| Entity Emerging Growth Company | true |
| Entity File Number | 001-40067 |
| Entity Tax Identification Number | 85-2696306 |
| Entity Address, Address Line One | 2173 Salk Avenue |
| Entity Address, Address Line Two | Suite 250 |
| Entity Address, Address Line Three | PMB#052 |
| Entity Address, City or Town | Carlsbad |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92008 |
| City Area Code | 415 |
| Local Phone Number | 649-8758 |
| Title of 12(b) Security | Common stock, par value $0.0001 per share |
| Trading Symbol | PRDS |
| Security Exchange Name | NASDAQ |
| Entity Incorporation, State or Country Code | DE |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Ex Transition Period | false |
