Document and Entity Information - USD ($)
$ / shares in Units, $ in Millions

12 Months Ended

Dec. 31, 2021

Feb. 18, 2022

Jun. 30, 2021

Cover [Abstract]

Document Type

10-K

Amendment Flag

false

Document Period End Date

Dec. 31, 2021

Document Fiscal Year Focus

2021

Document Fiscal Period Focus

FY

Trading Symbol

KYMR

Entity Registrant Name

KYMERA THERAPEUTICS, INC.

Entity Central Index Key

0001815442

Current Fiscal Year End Date

--12-31

Entity Current Reporting Status

Yes

Entity Filer Category

Large Accelerated Filer

Entity Well-known Seasoned Issuer

Yes

Entity Voluntary Filers

No

Entity Small Business

false

Entity Emerging Growth Company

false

Entity Common Stock, Shares Outstanding

51,703,544

Entity Public Float

$ 1,688.2

Entity Shell Company

false

Entity File Number

001-39460

Entity Tax Identification Number

81-2992166

Entity Address, Address Line One

200 Arsenal Yards Blvd.

Entity Address, Address Line Two

Suite 230

Entity Address, City or Town

Watertown

Entity Address, State or Province

MA

Entity Address, Postal Zip Code

02472

City Area Code

857

Local Phone Number

285-5300

Entity Interactive Data Current

Yes

Entity Incorporation, State or Country Code

DE

Document Annual Report

true

Document Transition Report

false

Title of 12(b) Security

Common Stock, par value $0.0001 per share

Security Exchange Name

NASDAQ

Documents Incorporated by Reference

Portions of the registrant’s Proxy Statement for its 2022 Annual Meeting of Stockholders, which the registrant intends to file with the Securities and Exchange Commission not later than 120 days after the registrant’s fiscal year ended December 31, 2021, are incorporated by reference into Part III of this Annual Report on Form 10-K

ICFR Auditor Attestation Flag

false

Entity Listing, Par Value Per Share

$ 0.0001

Auditor Name

Ernst & Young LLP

Auditor Location

Boston, Massachusetts

Auditor Firm ID

42