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v3.22.1

Related Party Transactions - Additional Information (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Aug. 31, 2021 | Jul. 31, 2021 | Dec. 31, 2021
Related Party Transaction [Line Items] |  |  |  |
Recovery of stockholder's short-swing profits |  | $ 553,000 |  |
Erasca Foundation |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Contribution of common stock |  |  |  | $ 17,497,000
Amount loaned in exchange of non-interest bearing promissory note | $ 100,000 |  |  |
Erasca Foundation | Prepaid Expenses and Other Current Assets |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Amount receivable | $ 100,000 |  |  | $ 100,000
Common Stock | Erasca Foundation |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Stock issued |  |  | 1,093,557 | 1,093,557
Contribution of common stock |  |  | $ 17,500,000 |

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