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Business Combinations and Divestitures - Purchase Consideration Transferred (Details) - USD ($) $ in Thousands | Jul. 01, 2024 | May 09, 2024 | Apr. 03, 2024 | Aug. 02, 2023 | Jan. 03, 2023 | Dec. 31, 2024 | Dec. 31, 2023
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Alvarium, TWMH And TIG |  |  |  |  |  |  |
Business Combination, Consideration Transferred [Abstract] |  |  |  |  |  |  |
Cash consideration |  |  |  |  | $ 99,999 |  |
Earn-out consideration |  |  |  |  | 85,097 |  |
Tax Receivable Agreement |  |  |  |  | 13,000 |  |
Payment of assumed liabilities |  |  |  |  | 760 |  |
Total purchase consideration transferred |  |  |  |  | 1,071,116 |  |
Alvarium, TWMH And TIG | Class A Common Stock |  |  |  |  |  |  |
Business Combination, Consideration Transferred [Abstract] |  |  |  |  |  |  |
Equity consideration |  |  |  |  | 294,159 |  |
Alvarium, TWMH And TIG | Class B Common Stock |  |  |  |  |  |  |
Business Combination, Consideration Transferred [Abstract] |  |  |  |  |  |  |
Equity consideration |  |  |  |  | 573,205 |  |
Alvarium, TWMH And TIG | Warrants |  |  |  |  |  |  |
Business Combination, Consideration Transferred [Abstract] |  |  |  |  |  |  |
Equity consideration |  |  |  |  | $ 4,896 |  |
AlTi Wealth Management (Switzerland) SA (“AWMS”) |  |  |  |  |  |  |
Business Combination, Consideration Transferred [Abstract] |  |  |  |  |  |  |
Cash consideration |  |  |  | $ 5,711 |  |  |
Equity consideration |  |  |  | 1,459 |  |  |
Deferred cash consideration |  |  |  | 6,695 |  |  |
Earn-out consideration |  |  |  | 2,721 |  |  |
Payment of assumed liabilities |  |  |  | 168 |  |  |
Deferred consideration |  |  |  |  |  | $ 0 | $ 7,135
Total purchase consideration transferred |  |  |  | $ 16,754 |  |  |
East End Advisors, LLC ("EEA") |  |  |  |  |  |  |
Business Combination, Consideration Transferred [Abstract] |  |  |  |  |  |  |
Cash consideration |  |  | $ 69,013 |  |  |  |
Contingent consideration installments |  |  | 23,308 |  |  |  |
Payment of assumed liabilities |  |  | 793 |  |  |  |
Total purchase consideration transferred |  |  | $ 93,114 |  |  |  |
Pointwise Partners Limited ("PW") |  |  |  |  |  |  |
Business Combination, Consideration Transferred [Abstract] |  |  |  |  |  |  |
Cash consideration |  | $ 1,735 |  |  |  |  |
Equity consideration |  | 1,705 |  |  |  |  |
Payment of assumed liabilities |  | 3,300 |  |  |  |  |
Deferred consideration |  | 3,328 |  |  |  | $ 3,339 | $ 0
Settlement of pre-existing relationships |  | 1,186 |  |  |  |  |
Total purchase consideration transferred |  | $ 7,954 |  |  |  |  |
Envoi, LLC (“Envoi”) |  |  |  |  |  |  |
Business Combination, Consideration Transferred [Abstract] |  |  |  |  |  |  |
Cash consideration | $ 25,258 |  |  |  |  |  |
Earn-out consideration | 9,000 |  |  |  |  |  |
Total purchase consideration transferred | $ 34,258 |  |  |  |  |  |

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