| Document and Entity Information | May 09, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Document Period End Date | May 09, 2024 |
| Entity Registrant Name | ADEIA INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-39304 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock (par value $0.001 per share) |
| Trading Symbol | ADEA |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Flag | true |
| Entity Central Index Key | 0001803696 |
| Amendment Description | Proposal 1 – Election of Directors: Name of Director For Against Abstain Broker Non-Vote Paul E. Davis 92,992,104 503,497 39,803 8,151,277 V. Sue Molina 92,895,482 606,310 33,612 8,151,277 Daniel Moloney 92,735,204 762,510 37,690 8,151,277 Tonia O’Connor 88,550,573 4,948,219 36,612 8,151,277 Raghavendra Rau 88,556,846 4,943,953 34,605 8,151,277 Adam Rymer 89,617,959 3,880,740 36,705 8,151,277 Phyllis Turner-Brim 92,382,308 1,117,781 35,315 8,151,277 Proposal 2 – Advisory Vote to Approve Named Executive Officer Compensation: For Against Abstain Broker Non-Vote 91,305,094 2,161,984 68,326 8,151,277 Proposal 3 – Approval of an Amended and Restated 2020 Equity Incentive Plan: For Against Abstain Broker Non-Vote 88,021,511 5,456,030 57,863 8,151,277 Proposal 4 – Ratification of Appointment of Independent Registered Public Accounting Firm: For Against Abstain 99,441,058 2,211,277 34,346 |
