Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Feb. 23, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-38672
Entity Registrant Name	ARVINAS, INC.
Entity Incorporation, State or Country Code	DE
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
Title of 12(b) Security	Common stock, par value $0.001 per share
Trading Symbol	ARVN
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 3,457.3
Entity Common Stock Shares Outstanding		53,046,576
Documents Incorporated by Reference	Part III of this Annual Report incorporates by reference information from the definitive Proxy Statement for the registrant’s 2022 Annual Meeting of Stockholders, which is expected to be filed with the Securities and Exchange Commission not later than 120 days after the registrant’s fiscal year ended December 31, 2021.
Entity Central Index Key	0001655759
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false