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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2024
Feb. 21, 2025
Jun. 28, 2024
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2024    
Document Fiscal Year Focus 2024    
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   64,944,136  
Entity Public Float     $ 1,146,000,000
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity File Number 001-39460    
Entity Tax Identification Number 81-2992166    
Entity Address, Address Line One 500 North Beacon Street    
Entity Address, Address Line Two 4th Floor    
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 2025 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, 2024, are incorporated by reference into Part III of this Annual Report on Form 10-K

    
ICFR Auditor Attestation Flag true    
Entity Listing, Par Value Per Share $ 0.0001    
Auditor Name Ernst & Young LLP    
Auditor Location Boston, Massachusetts    
Auditor Firm ID 42    
Auditor Opinion [Text Block]

 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework), and our report dated February 27, 2025 expressed an unqualified opinion thereon.