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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2022
Feb. 07, 2023
Jun. 30, 2022
Cover [Abstract]      
Entity Registrant Name ADEIA INC.    
Trading Symbol ADEA    
Entity Central Index Key 0001803696    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Document Type 10-K    
Document Period End Date Dec. 31, 2022    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   105,230,113  
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 904,728,072
Entity Interactive Data Current Yes    
Entity Shell Company false    
Entity File Number 001-39304    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 84-4734590    
Entity Address, Address Line One 3025 Orchard Parkway    
Entity Address, City or Town San Jose    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 95134    
City Area Code 408    
Local Phone Number 473-2500    
Document Annual Report true    
ICFR Auditor Attestation Flag true    
Document Transition Report false    
Security12b Title Common Stock, par value $0.001 per share    
Security Exchange Name NASDAQ    
Auditor Name PricewaterhouseCoopers LLP    
Auditor Location San Jose, California, USA    
Auditor Firm ID 238    
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE:

Portions of the registrant’s Proxy Statement for the registrant’s 2023 Annual Meeting of Stockholders will be filed with the Commission within 120 days after the close of the registrant’s 2022 fiscal year and are incorporated by reference in Part III of this Annual Report on Form 10-K to the extent stated herein.