3.24.2.u1 html 690 518 1 false 167 0 false 11 false false R1.htm 0000001 - Document - Cover Sheet http://alti-global.com/role/Cover Cover Cover 1 false false R2.htm 9952151 - Statement - Condensed Consolidated Statement of Financial Position (Unaudited) Sheet http://alti-global.com/role/CondensedConsolidatedStatementofFinancialPositionUnaudited Condensed Consolidated Statement of Financial Position (Unaudited) Statements 2 false false R3.htm 9952152 - Statement - Condensed Consolidated Statement of Financial Position (Unaudited) (Parenthetical) Sheet http://alti-global.com/role/CondensedConsolidatedStatementofFinancialPositionUnauditedParenthetical Condensed Consolidated Statement of Financial Position (Unaudited) (Parenthetical) Statements 3 false false R4.htm 9952153 - Statement - Condensed Consolidated Statement of Operations And Comprehensive Income (Loss) (Unaudited) Sheet http://alti-global.com/role/CondensedConsolidatedStatementofOperationsAndComprehensiveIncomeLossUnaudited Condensed Consolidated Statement of Operations And Comprehensive Income (Loss) (Unaudited) Statements 4 false false R5.htm 9952154 - Statement - Condensed Consolidated Statement of Changes in Mezzanine Equity and Shareholders??? Equity (Unaudited) Sheet http://alti-global.com/role/CondensedConsolidatedStatementofChangesinMezzanineEquityandShareholdersEquityUnaudited Condensed Consolidated Statement of Changes in Mezzanine Equity and Shareholders??? Equity (Unaudited) Statements 5 false false R6.htm 9952155 - Statement - Condensed Consolidated Statement of Cash Flows (Unaudited) Sheet http://alti-global.com/role/CondensedConsolidatedStatementofCashFlowsUnaudited Condensed Consolidated Statement of Cash Flows (Unaudited) Statements 6 false false R7.htm 9952156 - Disclosure - Description of the Business Sheet http://alti-global.com/role/DescriptionoftheBusiness Description of the Business Notes 7 false false R8.htm 9952157 - Disclosure - Summary of Significant Accounting Policies Sheet http://alti-global.com/role/SummaryofSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 8 false false R9.htm 9952158 - Disclosure - Business Combinations and Divestitures Sheet http://alti-global.com/role/BusinessCombinationsandDivestitures Business Combinations and Divestitures Notes 9 false false R10.htm 9952159 - Disclosure - Revenue Sheet http://alti-global.com/role/Revenue Revenue Notes 10 false false R11.htm 9952160 - Disclosure - Equity-Based Compensation and Earn-in Expenses Sheet http://alti-global.com/role/EquityBasedCompensationandEarninExpenses Equity-Based Compensation and Earn-in Expenses Notes 11 false false R12.htm 9952161 - Disclosure - Income Taxes Sheet http://alti-global.com/role/IncomeTaxes Income Taxes Notes 12 false false R13.htm 9952162 - Disclosure - Fair Value Disclosures Sheet http://alti-global.com/role/FairValueDisclosures Fair Value Disclosures Notes 13 false false R14.htm 9952163 - Disclosure - Equity Method Investments Sheet http://alti-global.com/role/EquityMethodInvestments Equity Method Investments Notes 14 false false R15.htm 9952164 - Disclosure - Investments Sheet http://alti-global.com/role/Investments Investments Notes 15 false false R16.htm 9952165 - Disclosure - Intangible Assets, net Sheet http://alti-global.com/role/IntangibleAssetsnet Intangible Assets, net Notes 16 false false R17.htm 9952166 - Disclosure - Other assets, net and Other liabilities, net Sheet http://alti-global.com/role/OtherassetsnetandOtherliabilitiesnet Other assets, net and Other liabilities, net Notes 17 false false R18.htm 9952167 - Disclosure - Leases Sheet http://alti-global.com/role/Leases Leases Notes 18 false false R19.htm 9952168 - Disclosure - Goodwill, net Sheet http://alti-global.com/role/Goodwillnet Goodwill, net Notes 19 false false R20.htm 9952169 - Disclosure - Debt, net of unamortized deferred financing cost Sheet http://alti-global.com/role/Debtnetofunamortizeddeferredfinancingcost Debt, net of unamortized deferred financing cost Notes 20 false false R21.htm 9952170 - Disclosure - Retirement Plans Sheet http://alti-global.com/role/RetirementPlans Retirement Plans Notes 21 false false R22.htm 9952171 - Disclosure - Related Party Transactions Sheet http://alti-global.com/role/RelatedPartyTransactions Related Party Transactions Notes 22 false false R23.htm 9952172 - Disclosure - Segment Reporting Sheet http://alti-global.com/role/SegmentReporting Segment Reporting Notes 23 false false R24.htm 9952173 - Disclosure - Earnings Per Share Sheet http://alti-global.com/role/EarningsPerShare Earnings Per Share Notes 24 false false R25.htm 9952174 - Disclosure - Commitments and Contingencies Sheet http://alti-global.com/role/CommitmentsandContingencies Commitments and Contingencies Notes 25 false false R26.htm 9952175 - Disclosure - Equity Sheet http://alti-global.com/role/Equity Equity Notes 26 false false R27.htm 9952176 - Disclosure - Subsequent Events Sheet http://alti-global.com/role/SubsequentEvents Subsequent Events Notes 27 false false R28.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 28 false false R29.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 29 false false R30.htm 9954471 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://alti-global.com/role/SummaryofSignificantAccountingPolicies 30 false false R31.htm 9954472 - Disclosure - Description of the Business (Tables) Sheet http://alti-global.com/role/DescriptionoftheBusinessTables Description of the Business (Tables) Tables http://alti-global.com/role/DescriptionoftheBusiness 31 false false R32.htm 9954473 - Disclosure - Business Combinations and Divestitures (Tables) Sheet http://alti-global.com/role/BusinessCombinationsandDivestituresTables Business Combinations and Divestitures (Tables) Tables http://alti-global.com/role/BusinessCombinationsandDivestitures 32 false false R33.htm 9954474 - Disclosure - Revenue (Tables) Sheet http://alti-global.com/role/RevenueTables Revenue (Tables) Tables http://alti-global.com/role/Revenue 33 false false R34.htm 9954475 - Disclosure - Equity-Based Compensation and Earn-in Expenses (Tables) Sheet http://alti-global.com/role/EquityBasedCompensationandEarninExpensesTables Equity-Based Compensation and Earn-in Expenses (Tables) Tables http://alti-global.com/role/EquityBasedCompensationandEarninExpenses 34 false false R35.htm 9954476 - Disclosure - Fair Value Disclosures (Tables) Sheet http://alti-global.com/role/FairValueDisclosuresTables Fair Value Disclosures (Tables) Tables http://alti-global.com/role/FairValueDisclosures 35 false false R36.htm 9954477 - Disclosure - Investments (Tables) Sheet http://alti-global.com/role/InvestmentsTables Investments (Tables) Tables http://alti-global.com/role/Investments 36 false false R37.htm 9954478 - Disclosure - Intangible Assets, net (Tables) Sheet http://alti-global.com/role/IntangibleAssetsnetTables Intangible Assets, net (Tables) Tables http://alti-global.com/role/IntangibleAssetsnet 37 false false R38.htm 9954479 - Disclosure - Other assets, net and Other liabilities, net (Tables) Sheet http://alti-global.com/role/OtherassetsnetandOtherliabilitiesnetTables Other assets, net and Other liabilities, net (Tables) Tables http://alti-global.com/role/OtherassetsnetandOtherliabilitiesnet 38 false false R39.htm 9954480 - Disclosure - Leases (Tables) Sheet http://alti-global.com/role/LeasesTables Leases (Tables) Tables http://alti-global.com/role/Leases 39 false false R40.htm 9954481 - Disclosure - Goodwill, net (Tables) Sheet http://alti-global.com/role/GoodwillnetTables Goodwill, net (Tables) Tables http://alti-global.com/role/Goodwillnet 40 false false R41.htm 9954482 - Disclosure - Debt, net of unamortized deferred financing cost (Tables) Sheet http://alti-global.com/role/DebtnetofunamortizeddeferredfinancingcostTables Debt, net of unamortized deferred financing cost (Tables) Tables http://alti-global.com/role/Debtnetofunamortizeddeferredfinancingcost 41 false false R42.htm 9954483 - Disclosure - Retirement Plans (Tables) Sheet http://alti-global.com/role/RetirementPlansTables Retirement Plans (Tables) Tables http://alti-global.com/role/RetirementPlans 42 false false R43.htm 9954484 - Disclosure - Related Party Transactions (Tables) Sheet http://alti-global.com/role/RelatedPartyTransactionsTables Related Party Transactions (Tables) Tables http://alti-global.com/role/RelatedPartyTransactions 43 false false R44.htm 9954485 - Disclosure - Segment Reporting (Tables) Sheet http://alti-global.com/role/SegmentReportingTables Segment Reporting (Tables) Tables http://alti-global.com/role/SegmentReporting 44 false false R45.htm 9954486 - Disclosure - Earnings Per Share (Tables) Sheet http://alti-global.com/role/EarningsPerShareTables Earnings Per Share (Tables) Tables http://alti-global.com/role/EarningsPerShare 45 false false R46.htm 9954487 - Disclosure - Description of the Business - Narrative (Details) Sheet http://alti-global.com/role/DescriptionoftheBusinessNarrativeDetails Description of the Business - Narrative (Details) Details 46 false false R47.htm 9954488 - Disclosure - Description of the Business - Shares Outstanding (Details) Sheet http://alti-global.com/role/DescriptionoftheBusinessSharesOutstandingDetails Description of the Business - Shares Outstanding (Details) Details 47 false false R48.htm 9954489 - Disclosure - Summary of Significant Accounting Policies - Prior Period Immaterial Corrections And Reclassfications (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesPriorPeriodImmaterialCorrectionsAndReclassficationsDetails Summary of Significant Accounting Policies - Prior Period Immaterial Corrections And Reclassfications (Details) Details 48 false false R49.htm 9954490 - Disclosure - Summary of Significant Accounting Policies - Revenue Recognition (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesRevenueRecognitionDetails Summary of Significant Accounting Policies - Revenue Recognition (Details) Details 49 false false R50.htm 9954491 - Disclosure - Summary of Significant Accounting Policies - Distributions from Investment (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesDistributionsfromInvestmentDetails Summary of Significant Accounting Policies - Distributions from Investment (Details) Details 50 false false R51.htm 9954492 - Disclosure - Summary of Significant Accounting Policies - Restricted Cash and Cash Equivalents (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesRestrictedCashandCashEquivalentsDetails Summary of Significant Accounting Policies - Restricted Cash and Cash Equivalents (Details) Details 51 false false R52.htm 9954493 - Disclosure - Summary of Significant Accounting Policies - Intangible Assets Other Than Goodwill, Net (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesIntangibleAssetsOtherThanGoodwillNetDetails Summary of Significant Accounting Policies - Intangible Assets Other Than Goodwill, Net (Details) Details 52 false false R53.htm 9954494 - Disclosure - Summary of Significant Accounting Policies - Goodwill (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesGoodwillDetails Summary of Significant Accounting Policies - Goodwill (Details) Details 53 false false R54.htm 9954495 - Disclosure - Summary of Significant Accounting Policies - Fixed Assets (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesFixedAssetsDetails Summary of Significant Accounting Policies - Fixed Assets (Details) Details 54 false false R55.htm 9954496 - Disclosure - Summary of Significant Accounting Policies - Tax Receivable Agreement (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesTaxReceivableAgreementDetails Summary of Significant Accounting Policies - Tax Receivable Agreement (Details) Details 55 false false R56.htm 9954497 - Disclosure - Summary of Significant Accounting Policies - Warrant Liabilities (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesWarrantLiabilitiesDetails Summary of Significant Accounting Policies - Warrant Liabilities (Details) Details 56 false false R57.htm 9954498 - Disclosure - Summary of Significant Accounting Policies - Business Combination, AWMS Earn-out Liability, East End Advisors Earn-out Liability (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesBusinessCombinationAWMSEarnoutLiabilityEastEndAdvisorsEarnoutLiabilityDetails Summary of Significant Accounting Policies - Business Combination, AWMS Earn-out Liability, East End Advisors Earn-out Liability (Details) Details 57 false false R58.htm 9954499 - Disclosure - Summary of Significant Accounting Policies - Delayed Share Purchase Agreement (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesDelayedSharePurchaseAgreementDetails Summary of Significant Accounting Policies - Delayed Share Purchase Agreement (Details) Details 58 false false R59.htm 9954500 - Disclosure - Summary of Significant Accounting Policies - Segment Reporting (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesSegmentReportingDetails Summary of Significant Accounting Policies - Segment Reporting (Details) Details 59 false false R60.htm 9954501 - Disclosure - Summary of Significant Accounting Policies - Held for Sale Accounting (Details) Sheet http://alti-global.com/role/SummaryofSignificantAccountingPoliciesHeldforSaleAccountingDetails Summary of Significant Accounting Policies - Held for Sale Accounting (Details) Details 60 false false R61.htm 9954502 - Disclosure - Business Combinations and Divestitures - Business Combinations, Acquisitions, And Fair Value of Net Assets Acquired and Intangibles (Details) Sheet http://alti-global.com/role/BusinessCombinationsandDivestituresBusinessCombinationsAcquisitionsAndFairValueofNetAssetsAcquiredandIntangiblesDetails Business Combinations and Divestitures - Business Combinations, Acquisitions, And Fair Value of Net Assets Acquired and Intangibles (Details) Details 61 false false R62.htm 9954503 - Disclosure - Business Combinations and Divestitures - Purchase Consideration Transferred (Details) Sheet http://alti-global.com/role/BusinessCombinationsandDivestituresPurchaseConsiderationTransferredDetails Business Combinations and Divestitures - Purchase Consideration Transferred (Details) Details 62 false false R63.htm 9954504 - Disclosure - Business Combinations and Divestitures - Assets Acquired And Liabilities Assumed (Details) Sheet http://alti-global.com/role/BusinessCombinationsandDivestituresAssetsAcquiredAndLiabilitiesAssumedDetails Business Combinations and Divestitures - Assets Acquired And Liabilities Assumed (Details) Details 63 false false R64.htm 9954505 - Disclosure - Business Combinations and Divestitures - Intangible Assets (Details) Sheet http://alti-global.com/role/BusinessCombinationsandDivestituresIntangibleAssetsDetails Business Combinations and Divestitures - Intangible Assets (Details) Details 64 false false R65.htm 9954506 - Disclosure - Business Combinations and Divestitures - Pro Forma Financial Information (Details) Sheet http://alti-global.com/role/BusinessCombinationsandDivestituresProFormaFinancialInformationDetails Business Combinations and Divestitures - Pro Forma Financial Information (Details) Details 65 false false R66.htm 9954507 - Disclosure - Business Combinations and Divestitures - Deconsolidation, Disposal, And Assets Held For Sale (Details) Sheet http://alti-global.com/role/BusinessCombinationsandDivestituresDeconsolidationDisposalAndAssetsHeldForSaleDetails Business Combinations and Divestitures - Deconsolidation, Disposal, And Assets Held For Sale (Details) Details 66 false false R67.htm 9954508 - Disclosure - Business Combinations and Divestitures - Assets and Liabilities Held-For-Sale (Details) Sheet http://alti-global.com/role/BusinessCombinationsandDivestituresAssetsandLiabilitiesHeldForSaleDetails Business Combinations and Divestitures - Assets and Liabilities Held-For-Sale (Details) Details 67 false false R68.htm 9954509 - Disclosure - Revenue - Disaggregation of Revenue (Details) Sheet http://alti-global.com/role/RevenueDisaggregationofRevenueDetails Revenue - Disaggregation of Revenue (Details) Details 68 false false R69.htm 9954510 - Disclosure - Revenue - Contract with Customer (Details) Sheet http://alti-global.com/role/RevenueContractwithCustomerDetails Revenue - Contract with Customer (Details) Details 69 false false R70.htm 9954511 - Disclosure - Equity-Based Compensation and Earn-in Expenses - Narrative (Details) Sheet http://alti-global.com/role/EquityBasedCompensationandEarninExpensesNarrativeDetails Equity-Based Compensation and Earn-in Expenses - Narrative (Details) Details 70 false false R71.htm 9954512 - Disclosure - Equity-Based Compensation and Earn-in Expenses - Equity-Based Compensation Award Activity (Details) Sheet http://alti-global.com/role/EquityBasedCompensationandEarninExpensesEquityBasedCompensationAwardActivityDetails Equity-Based Compensation and Earn-in Expenses - Equity-Based Compensation Award Activity (Details) Details 71 false false R72.htm 9954513 - Disclosure - Equity-Based Compensation and Earn-in Expenses - Equity-Based Compensation Recognized (Details) Sheet http://alti-global.com/role/EquityBasedCompensationandEarninExpensesEquityBasedCompensationRecognizedDetails Equity-Based Compensation and Earn-in Expenses - Equity-Based Compensation Recognized (Details) Details 72 false false R73.htm 9954514 - Disclosure - Income Taxes (Details) Sheet http://alti-global.com/role/IncomeTaxesDetails Income Taxes (Details) Details http://alti-global.com/role/IncomeTaxes 73 false false R74.htm 9954515 - Disclosure - Fair Value Disclosures - Narrative (Details) Sheet http://alti-global.com/role/FairValueDisclosuresNarrativeDetails Fair Value Disclosures - Narrative (Details) Details 74 false false R75.htm 9954516 - Disclosure - Fair Value Disclosures - Assets and Liabilities Measured At Fair Value (Details) Sheet http://alti-global.com/role/FairValueDisclosuresAssetsandLiabilitiesMeasuredAtFairValueDetails Fair Value Disclosures - Assets and Liabilities Measured At Fair Value (Details) Details 75 false false R76.htm 9954517 - Disclosure - Fair Value Disclosures - Changes In Fair Value of Level 3 Measurements (Details) Sheet http://alti-global.com/role/FairValueDisclosuresChangesInFairValueofLevel3MeasurementsDetails Fair Value Disclosures - Changes In Fair Value of Level 3 Measurements (Details) Details 76 false false R77.htm 9954518 - Disclosure - Fair Value Disclosures - Valuation Methodologies (Details) Sheet http://alti-global.com/role/FairValueDisclosuresValuationMethodologiesDetails Fair Value Disclosures - Valuation Methodologies (Details) Details 77 false false R78.htm 9954519 - Disclosure - Equity Method Investments - Equity Method Investments At Cost and Carrying Value (Details) Sheet http://alti-global.com/role/EquityMethodInvestmentsEquityMethodInvestmentsAtCostandCarryingValueDetails Equity Method Investments - Equity Method Investments At Cost and Carrying Value (Details) Details 78 false false R79.htm 9954520 - Disclosure - Investments - Cost and Fair Value of Investments (Details) Sheet http://alti-global.com/role/InvestmentsCostandFairValueofInvestmentsDetails Investments - Cost and Fair Value of Investments (Details) Details 79 false false R80.htm 9954521 - Disclosure - Investments - Unrealized Gains (Losses) And Realized Gains (Losses) (Details) Sheet http://alti-global.com/role/InvestmentsUnrealizedGainsLossesAndRealizedGainsLossesDetails Investments - Unrealized Gains (Losses) And Realized Gains (Losses) (Details) Details 80 false false R81.htm 9954522 - Disclosure - Intangible Assets, net - Schedule of Intangible Assets (Details) Sheet http://alti-global.com/role/IntangibleAssetsnetScheduleofIntangibleAssetsDetails Intangible Assets, net - Schedule of Intangible Assets (Details) Details 81 false false R82.htm 9954523 - Disclosure - Intangible Assets, net - Narrative (Details) Sheet http://alti-global.com/role/IntangibleAssetsnetNarrativeDetails Intangible Assets, net - Narrative (Details) Details 82 false false R83.htm 9954524 - Disclosure - Intangible Assets, net - Estimated Future Amortization (Details) Sheet http://alti-global.com/role/IntangibleAssetsnetEstimatedFutureAmortizationDetails Intangible Assets, net - Estimated Future Amortization (Details) Details 83 false false R84.htm 9954525 - Disclosure - Other assets, net and Other liabilities, net - Other Assets (Details) Sheet http://alti-global.com/role/OtherassetsnetandOtherliabilitiesnetOtherAssetsDetails Other assets, net and Other liabilities, net - Other Assets (Details) Details 84 false false R85.htm 9954526 - Disclosure - Other assets, net and Other liabilities, net - Other Liabilities (Details) Sheet http://alti-global.com/role/OtherassetsnetandOtherliabilitiesnetOtherLiabilitiesDetails Other assets, net and Other liabilities, net - Other Liabilities (Details) Details 85 false false R86.htm 9954527 - Disclosure - Leases - Lease Expense (Details) Sheet http://alti-global.com/role/LeasesLeaseExpenseDetails Leases - Lease Expense (Details) Details 86 false false R87.htm 9954528 - Disclosure - Leases - Supplemental Cash Flow Information (Details) Sheet http://alti-global.com/role/LeasesSupplementalCashFlowInformationDetails Leases - Supplemental Cash Flow Information (Details) Details 87 false false R88.htm 9954529 - Disclosure - Leases - Weighted-average Remaining Lease Term And Discount Rate (Details) Sheet http://alti-global.com/role/LeasesWeightedaverageRemainingLeaseTermAndDiscountRateDetails Leases - Weighted-average Remaining Lease Term And Discount Rate (Details) Details 88 false false R89.htm 9954530 - Disclosure - Leases - Future Minimum Lease Payments (Details) Sheet http://alti-global.com/role/LeasesFutureMinimumLeasePaymentsDetails Leases - Future Minimum Lease Payments (Details) Details 89 false false R90.htm 9954531 - Disclosure - Goodwill, net (Details) Sheet http://alti-global.com/role/GoodwillnetDetails Goodwill, net (Details) Details http://alti-global.com/role/GoodwillnetTables 90 false false R91.htm 9954532 - Disclosure - Goodwill, net - Narrative (Details) Sheet http://alti-global.com/role/GoodwillnetNarrativeDetails Goodwill, net - Narrative (Details) Details 91 false false R92.htm 9954533 - Disclosure - Debt, net of unamortized deferred financing cost - Schedule of Debt (Details) Sheet http://alti-global.com/role/DebtnetofunamortizeddeferredfinancingcostScheduleofDebtDetails Debt, net of unamortized deferred financing cost - Schedule of Debt (Details) Details 92 false false R93.htm 9954534 - Disclosure - Debt, net of unamortized deferred financing cost - Narrative (Details) Sheet http://alti-global.com/role/DebtnetofunamortizeddeferredfinancingcostNarrativeDetails Debt, net of unamortized deferred financing cost - Narrative (Details) Details http://alti-global.com/role/DebtnetofunamortizeddeferredfinancingcostTables 93 false false R94.htm 9954535 - Disclosure - Debt, net of unamortized deferred financing cost - Term Loan Maturities (Details) Sheet http://alti-global.com/role/DebtnetofunamortizeddeferredfinancingcostTermLoanMaturitiesDetails Debt, net of unamortized deferred financing cost - Term Loan Maturities (Details) Details 94 false false R95.htm 9954536 - Disclosure - Retirement Plans - Narrative (Details) Sheet http://alti-global.com/role/RetirementPlansNarrativeDetails Retirement Plans - Narrative (Details) Details 95 false false R96.htm 9954537 - Disclosure - Retirement Plans - Schedule Of Contributions (Details) Sheet http://alti-global.com/role/RetirementPlansScheduleOfContributionsDetails Retirement Plans - Schedule Of Contributions (Details) Details 96 false false R97.htm 9954538 - Disclosure - Related Party Transactions - Schedule of Related Party Transactions (Details) Sheet http://alti-global.com/role/RelatedPartyTransactionsScheduleofRelatedPartyTransactionsDetails Related Party Transactions - Schedule of Related Party Transactions (Details) Details 97 false false R98.htm 9954539 - Disclosure - Related Party Transactions - Narrative (Details) Sheet http://alti-global.com/role/RelatedPartyTransactionsNarrativeDetails Related Party Transactions - Narrative (Details) Details 98 false false R99.htm 9954540 - Disclosure - Related Party Transactions - Structure of Related Business Entities (Details) Sheet http://alti-global.com/role/RelatedPartyTransactionsStructureofRelatedBusinessEntitiesDetails Related Party Transactions - Structure of Related Business Entities (Details) Details 99 false false R100.htm 9954541 - Disclosure - Segment Reporting - Narrative (Details) Sheet http://alti-global.com/role/SegmentReportingNarrativeDetails Segment Reporting - Narrative (Details) Details 100 false false R101.htm 9954542 - Disclosure - Segment Reporting - Net Income By Segment (Details) Sheet http://alti-global.com/role/SegmentReportingNetIncomeBySegmentDetails Segment Reporting - Net Income By Segment (Details) Details 101 false false R102.htm 9954543 - Disclosure - Segment Reporting - Assets By Segment (Details) Sheet http://alti-global.com/role/SegmentReportingAssetsBySegmentDetails Segment Reporting - Assets By Segment (Details) Details 102 false false R103.htm 9954544 - Disclosure - Earnings Per Share - Basic and Diluted Earnings per Share (Details) Sheet http://alti-global.com/role/EarningsPerShareBasicandDilutedEarningsperShareDetails Earnings Per Share - Basic and Diluted Earnings per Share (Details) Details 103 false false R104.htm 9954545 - Disclosure - Earnings Per Share - Antidilutive Securities (Details) Sheet http://alti-global.com/role/EarningsPerShareAntidilutiveSecuritiesDetails Earnings Per Share - Antidilutive Securities (Details) Details 104 false false R105.htm 9954546 - Disclosure - Commitments and Contingencies - Narrative (Details) Sheet http://alti-global.com/role/CommitmentsandContingenciesNarrativeDetails Commitments and Contingencies - Narrative (Details) Details 105 false false R106.htm 9954547 - Disclosure - Equity (Details) Sheet http://alti-global.com/role/EquityDetails Equity (Details) Details http://alti-global.com/role/EquityBasedCompensationandEarninExpensesTables 106 false false R107.htm 9954548 - Disclosure - Subsequent Events (Details) Sheet http://alti-global.com/role/SubsequentEventsDetails Subsequent Events (Details) Details http://alti-global.com/role/SubsequentEvents 107 false false All Reports Book All Reports alti-20240630.htm alti-20240630.xsd alti-20240630_cal.xml alti-20240630_def.xml alti-20240630_lab.xml alti-20240630_pre.xml alti-20240630_g1.jpg http://fasb.org/us-gaap/2024 http://xbrl.sec.gov/dei/2024 http://xbrl.sec.gov/ecd/2024 true true