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Statement - Consolidated Statements of Cash Flows (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Business Description and Organization link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Revenue Recognition link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Net Income Per Unit link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Cash and Securities Segregated Under Federal Regulations and Other Requirements link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Derivative Instruments link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Offsetting Assets and Liabilities link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Fair Value link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Furniture, Equipment and Leasehold Improvements, Net link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Deferred Sales Commissions, Net link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Consolidated Company-Sponsored Investment Funds link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Net Capital link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - Counterparty Risk link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - 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Disclosure - Business Description and Organization (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Revenue Recognition (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Net Income Per Unit (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Derivative Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Offsetting Assets and Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Fair Value (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Furniture, Equipment and Leasehold Improvements, Net (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Deferred Sales Commissions, Net (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Commitments and Contingencies (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Consolidated Company-Sponsored Investment Funds (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Qualified Employee Benefit Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Long-term Incentive Compensation Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Units Outstanding (Tables) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Business Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Related Party Transactions (Tables) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Divestitures (Tables) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Business Description and Organization - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Business Description and Organization - Summary of Ownership Structure (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Summary of Significant Accounting Policies - Schedule of Repurchase Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Revenue Recognition (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Net Income Per Unit (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Cash and Securities Segregated Under Federal Regulations and Other Requirements (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Investments - Summary of Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Investments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Investments - Unrealized Gains (Losses) Related to Equity Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Derivative Instruments - Notional Value, Fair Value and Gains and Losses Recognized in Investment Gains (Losses) (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Derivative Instruments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Offsetting Assets and Liabilities - Offsetting Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Offsetting Assets and Liabilities - Offsetting Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Fair Value - Valuation of Financial Instruments by Pricing Observability Levels (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Fair Value - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Fair Value - Change in Carrying Value of Level 3 Financial Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Fair Value - Change in Carrying Value Associated with Contingent Payment Arrangements Level 3 Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Furniture, Equipment and Leasehold Improvements, Net - Schedule of Furniture, Equipment and Leasehold Improvements (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Furniture, Equipment and Leasehold Improvements, Net - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Deferred Sales Commissions, Net - Components of Deferred Sales Commissions (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Deferred Sales Commissions, Net - Schedule of Future Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Leases - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Leases - Leases included in the Condensed Consolidated Statement of Financial Condition (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - 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Disclosure - Commitments and Contingencies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Consolidated Company-Sponsored Investment Funds - Summary of Balance Sheet Amounts (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Consolidated Company-Sponsored Investment Funds - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Consolidated Company-Sponsored Investment Funds - Redeemable Noncontrolling Interest (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Consolidated Company-Sponsored Investment Funds - Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Consolidated Company-Sponsored Investment Funds - Offsetting of Derivative Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Net Capital (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Qualified Employee Benefit Plans - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Qualified Employee Benefit Plans - The Retirement Plan's Projected Benefit Obligation, Fair Value of Plan Assets and Funded Status (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Qualified Employee Benefit Plans - Amounts Recognized in Other Comprehensive (Loss) Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - Qualified Employee Benefit Plans - Reconciliation of Amounts Recognized in Other Comprehensive Income for the Retirement Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - Qualified Employee Benefit Plans - Amounts Included in Accumulated Other Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - Qualified Employee Benefit Plans - Future Benefit Payments to be Paid (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - Qualified Employee Benefit Plans - Net (Benefit) Expense Under the Retirement Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - Qualified Employee Benefit Plans - Actuarial Computations Used to Determine Net Periodic Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - Qualified Employee Benefit Plans - The Retirement Plan's Asset Allocation Percentages (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - Qualified Employee Benefit Plans - Valuation of our Retirement Plan Assets by Pricing Observability Levels (Details) link:presentationLink link:calculationLink link:definitionLink 9955579 - Disclosure - Long-term Incentive Compensation Plans - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955580 - Disclosure - Long-Term Incentive Compensation Plans - Schedule of Grant Details of Restricted AB Holding Units (Details) link:presentationLink link:calculationLink link:definitionLink 9955581 - Disclosure - Long-Term Incentive Compensation Plans - Summary of Changes in Unvested Restricted AB Holding Units (Details) link:presentationLink link:calculationLink link:definitionLink 9955582 - Disclosure - Units Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955583 - Disclosure - Income Taxes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955584 - Disclosure - Income Taxes - Earnings Before Income Taxes and Income Tax Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955585 - Disclosure - Income Taxes - Principal Reasons for the Difference Between the Effective Tax Rate and UBT Statutory Tax Rate (Details) link:presentationLink link:calculationLink link:definitionLink 9955586 - Disclosure - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955587 - Disclosure - Income Taxes - Tax Effect of Significant Items Comprising the Net Deferred Tax Asset (Liability) (Details) link:presentationLink link:calculationLink link:definitionLink 9955588 - Disclosure - Business Segment Information - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955589 - Disclosure - Business Segment Information - Net Revenues Derived From Investment Management, Research and Related Services (Details) link:presentationLink link:calculationLink link:definitionLink 9955590 - Disclosure - Business Segment Information - Net Revenues and Long-Lived Assets, Related To Geographic Areas (Details) link:presentationLink link:calculationLink link:definitionLink 9955591 - Disclosure - Related Party Transactions - Revenues for Services Provided (Details) link:presentationLink link:calculationLink link:definitionLink 9955592 - 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Valuation and Qualifying Account - Allowance for Doubtful Accounts (Details) link:presentationLink link:calculationLink link:definitionLink