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Cover - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Feb. 17, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-39083    
Entity Registrant Name Vir Biotechnology, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 81-2730369    
Entity Address, Address Line One 1800 Owens Street    
Entity Address, Address Line Two Suite 900    
Entity Address, City or Town San Francisco    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94158    
City Area Code 415    
Local Phone Number 906-4324    
Title of 12(b) Security Common Stock, $0.0001 par value    
Trading Symbol VIR    
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    
Document Financial Statement Error Correction false    
Entity Shell Company false    
Entity Public Float     $ 689.2
Entity Common Stock, Shares Outstanding   139,517,278  
Documents Incorporated by Reference
Portions of the definitive proxy statement, or the Proxy Statement, for the Registrant’s 2026 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K. The Proxy Statement will be filed with the Securities and Exchange Commission within 120 days of the Registrant’s fiscal year ended December 31, 2025.
    
Entity Central Index Key 0001706431    
Amendment Flag false    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY