| Document and Entity Information | Oct. 01, 2022 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001788999 |
| Current Fiscal Year End Date | --12-31 |
| Document Type | 8-K |
| Document Period End Date | Oct. 01, 2022 |
| Entity Registrant Name | Xperi Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-41486 |
| Entity Tax Identification Number | 84-4470363 |
| Entity Address, Address Line One | 2190 Gold Street |
| Entity Address, City or Town | San Jose |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 95002 |
| City Area Code | (408) |
| Local Phone Number | 519-9100 |
| 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 | XPER |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
