| Cover | Aug. 15, 2023 |
| Cover [Abstract] | |
| Entity Registrant Name | AlTi Global, Inc. |
| Document Type | 8-K |
| Document Period End Date | Aug. 15, 2023 |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40103 |
| Entity Tax Identification Number | 92-1552220 |
| Entity Address, Address Line One | 520 Madison Avenue, 21st Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10022 |
| Local Phone Number | 396-5904 |
| City Area Code | (212) |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A common stock, par value $0.0001 per share |
| Trading Symbol | ALTI |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001838615 |
| Amendment Flag | false |
