v3.25.4
Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2025
Jan. 30, 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 001-39497    
Entity Registrant Name UNITY SOFTWARE INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 27-0334803    
Entity Address, Address Line One 116 New Montgomery Street    
Entity Address, City or Town San Francisco    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94105-3607    
City Area Code 415    
Local Phone Number 638-9950    
Title of 12(b) Security Common stock, $0.000005 par value    
Trading Symbol U    
Security Exchange Name NYSE    
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 Flag false    
Entity Shell Company false    
Entity Public Float     $ 9.0
Entity Common Stock, Shares Outstanding   432,987,611  
Documents Incorporated by Reference
Portions of the registrant’s definitive proxy statement for the 2026 Annual Meeting of Stockholders, which will be filed with the Securities and Exchange Commission within 120 days after the registrant's fiscal year ended December 31, 2025, are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated.
    
Amendment Flag false    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001810806