| Document and Entity Information | Dec. 15, 2020 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001655759 |
| Document Type | 8-K |
| Document Period End Date | Dec. 15, 2020 |
| Entity Registrant Name | Arvinas, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-38672 |
| Entity Tax Identification Number | 47-2566120 |
| Entity Address, Address Line One | 5 Science Park |
| Entity Address, Address Line Two | 395 Winchester Ave. |
| Entity Address, City or Town | New Haven |
| Entity Address, State or Province | CT |
| Entity Address, Postal Zip Code | 06511 |
| City Area Code | (203) |
| Local Phone Number | 535-1456 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common stock, par value $0.001 per share |
| Trading Symbol | ARVN |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | true |
