Summary of Significant Accounting Policies (Policies)	3 Months Ended
Feb. 28, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and should be read in conjunction with our consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended November 30, 2020. Certain footnote disclosures included in our Annual Report on Form 10-K for the year ended November 30, 2020 have been condensed or omitted from the consolidated financial statements as they are not required for interim reporting under U.S. GAAP. The Consolidated Financial Statements reflect all adjustments of a normal, recurring nature that are, in the opinion of management, necessary for the fair presentation of the results for the interim period. The results presented in our Consolidated Financial Statements for interim periods are not necessarily indicative of the results for the entire year. We have made a number of estimates and assumptions relating to the reporting of assets and liabilities, the disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses during the reporting period to prepare these consolidated financial statements in conformity with U.S. GAAP. The most important of these estimates and assumptions relate to fair value measurements, compensation and benefits, goodwill and intangible assets, the ability to realize certain deferred tax assets and the recognition and measurement of uncertain tax positions. Although these and other estimates and assumptions are based on the best available information, actual results could be materially different from these estimates.
Consolidation	Consolidation Our policy is to consolidate all entities that we control by ownership of a majority of the outstanding voting stock. In addition, we consolidate entities that meet the definition of a variable interest entity (“VIE”) for which we are the primary beneficiary. The primary beneficiary is the party who has the power to direct the activities of a VIE that most significantly impact the entity’s economic performance and who has an obligation to absorb losses of the entity or a right to receive benefits from the entity that could potentially be significant to the entity. For consolidated entities that are less than the holding of equity interest is presented as Noncontrolling interests in our Consolidated Statements of Financial Condition and Consolidated Statements of Changes in Equity. The portion of net earnings attributable to the noncontrolling interests is presented as Net earnings (loss) attributable to noncontrolling interests in our Consolidated Statements of Earnings. In situations in which we have significant influence, but not control, of an entity that does not qualify as a VIE, we apply either the equity method of accounting or fair value accounting pursuant to the fair value option election under U.S. GAAP, with our portion of net earnings or gains and losses recorded in Other revenues or Principal transactions revenues, respectively. We also have formed nonconsolidated investment vehicles with third-party investors that are typically organized as partnerships or limited liability companies and are carried at fair value. We act as general partner or managing member for these investment vehicles and have generally provided the third-party investors with termination or “kick-out” rights. Intercompany accounts and transactions are eliminated in consolidation.
Adopted Accounting Standards	Adopted Accounting Standards Income Taxes. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The objective of the guidance is to simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740 and to provide more consistent application to improve the comparability of financial statements. We adopted the guidance in the first quarter of fiscal 2021 and the adoption did not have a material impact on our consolidated financial statements. Consolidation. In October 2018, the FASB issued ASU No. 2018-17, Consolidation: Targeted Improvements to Related Party Guidance for Variable Interest Entities. The guidance requires indirect interests held through related parties under common control arrangements be considered on a proportional basis for determining whether fees paid to decision makers and service providers are variable interests. We adopted the guidance in the first quarter of fiscal 2021 and the adoption did not have a material impact on our consolidated financial statements. Internal-Use Software. In August 2018, the FASB issued ASU No. 2018-15, Intangibles—Goodwill and Other—Internal-Use Software: Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The guidance amends the definition of a hosting arrangement and requires that the customer in a hosting arrangement that is a service contract capitalize certain implementation costs as if the arrangement was an internal-use software project. We adopted the guidance in the first quarter of fiscal 2021 and elected to apply the guidance prospectively to implementation costs incurred after the adoption date. The adoption did not have an impact on our consolidated financial statements on the adoption date. Defined Benefit Plans. In August 2018, the FASB issued ASU No. 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General: Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans. The objective of the guidance is to improve the effectiveness of disclosure requirements on defined benefit pension plans and other postretirement plans. We adopted the guidance in the first quarter of fiscal 2021 and the adoption did not have a material impact on our consolidated financial statements. Goodwill. In January 2017, the FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment, which simplifies goodwill impairment testing. We adopted the guidance in the first quarter of fiscal 2021 and the adoption did not have a material impact on our consolidated financial statements. Financial Instruments—Credit Losses. In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments. The guidance provides for estimating credit losses on financial assets measured at amortized cost by introducing an approach based on expected losses over the financial asset's entire life, recorded at inception or purchase. We adopted the new credit loss guidance on December 1, 2020 and applied a modified retrospective approach through a cumulative-effect adjustment to retained earnings upon adoption. At transition on December 1, 2020, the new accounting guidance's adoption resulted in a decrease in the provision for credit losses of $3.6 million with a corresponding increase in retained earnings of $2.7 million, net of tax. The decrease was attributable to applying a revised provisioning methodology based on historical loss experience for our investment banking fee receivables. The impact upon adoption for our secured financing receivables (reverse repurchases agreements, securities borrowing arrangements, and margin loans) was immaterial because of the contractual collateral maintenance provisions that require that the counterparty continually adjust the amount of collateralization securing the credit exposure on these contracts. For the remaining financial instruments within the guidance's scope, the expected credit losses were also determined to be immaterial considering the counterparty's credit quality, an insignificant history of credit losses, or the short-term nature of the credit exposures. The updated accounting policy for estimating credit losses on financial assets measured at amortized cost as a result of this adoption is outlined below. Credit Losses on Financial Assets Measured at Amortized Cost Financial assets measured at amortized cost are presented at the net amount expected to be collected and the measurement of credit losses and any expected increases or decreases in expected credit losses are recognized in earnings. The estimate of expected credit losses involves judgment and based on an assessment over the life of the financial instrument taking into consideration forecasts of expected future economic conditions. In evaluating secured financing receivables (reverse repurchases agreements, securities borrowing arrangements, and margin loans), the underlying collateral maintenance provisions are taken into consideration. The underlying contractual collateral maintenance for significantly all of our secured financing receivables requires that the counterparty continually adjust the collateralization amount, securing the credit exposure on these contracts. Collateralization levels for our secured financing receivables are initially established based upon the counterparty, the type of acceptable collateral that is monitored daily and adjusted to mitigate the potential of any credit losses. Credit losses are not recognized for secured financing receivables where the underlying collateral's fair value is equal to or exceeds the asset's amortized cost basis. In cases where the collateral's fair value does not equal or exceed the amortized cost basis, the allowance for credit losses, if any, is limited to the difference between the fair value of the collateral at the reporting date and the amortized cost basis of the financial assets. Our receivables from brokers, dealers, and clearing organizations include deposits of cash with exchange clearing organizations to meet margin requirements, amounts due from clearing organizations for daily variation settlements, securities failed-to-deliver or receive, receivables and payables for fees and commissions, and receivables arising from unsettled securities or loans transactions. These receivables generally do not give rise to material credit risk and have a remote probability of default either because of their short-term nature or due to the credit protection framework inherent in the design and operations of brokers, dealers and clearing organizations. As such, generally, no allowance for credit losses is held against these receivables. For all other financial assets measured at amortized cost, we estimate expected credit losses over the financial assets' life as of the reporting date based on relevant information about past events, current conditions, and reasonable and supportable forecasts.
Revenues from Contracts with Customers	Revenue from contracts with customers is recognized when, or as, we satisfy our performance obligations by transferring the promised goods or services to the customers. A good or service is transferred to a customer when, or as, the customer obtains control of that good or service. A performance obligation may be satisfied over time or at a point in time. Revenue from a performance obligation satisfied over time is recognized by measuring our progress in satisfying the performance obligation in a manner that depicts the transfer of the goods or services to the customer. Revenue from a performance obligation satisfied at a point in time is recognized at the point in time that we determine the customer obtains control over the promised good or service. The amount of revenue recognized reflects the consideration we expect to be entitled to in exchange for those promised goods or services (i.e., the “transaction price”). In determining the transaction price, we consider multiple factors, including the effects of variable consideration. Variable consideration is included in the transaction price only to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainties with respect to the amount are resolved. In determining when to include variable consideration in the transaction price, we consider the range of possible outcomes, the predictive value of our past experiences, the time period of when uncertainties expect to be resolved and the amount of consideration that is susceptible to factors outside of our influence, such as market volatility or the judgment and actions of third-parties. The following provides detailed information on the recognition of our revenues from contracts with customers: Commissions and Other Fees. We earn commission and other fee revenue by executing, settling and clearing transactions for clients primarily in equity, equity-related and futures products. Trade execution and clearing services, when provided together, represent a single performance obligation as the services are not separately identifiable in the context of the contract. Commission revenues associated with combined trade execution and clearing services, as well as trade execution services on a standalone basis, are recognized at a point in time on trade-date. Commissions revenues are generally paid on settlement date and we record a receivable between trade-date and payment on settlement date. We permit institutional customers to allocate a portion of their gross commissions to pay for research products and other services provided by third-parties. The amounts allocated for those purposes are commonly referred to as soft dollar arrangements. We act as an agent in the soft dollar arrangements as the customer controls the use of the soft dollars and directs our payments to third-party service providers on its behalf. Accordingly, amounts allocated to soft dollar arrangements are netted against commission revenues in our Consolidated Statements of Earnings. We also earn investment research fees for the sales of our proprietary investment research when a contract with a client has been identified. The delivery of investment research services represents a distinct performance obligation that is satisfied over time when the performance obligation is to provide ongoing access to a research platform or research analysts, with fees recognized on a straight-line basis over the period in which the performance obligation is satisfied. The performance obligation is satisfied at a point in time when the performance obligation is to provide individual interactions with research analysts or research events, with fees recognized on the interaction date. We earn account advisory and distribution fees in connection with wealth management services. Account advisory fees are recognized over time using the time-elapsed method as we determined that the customer simultaneously receives and consumes the benefits of investment advisory services as they are provided. Account advisory fees may be paid in advance of a specified service period or in arrears at the end of the specified service period (e.g., quarterly). Account advisory fees paid in advance are initially deferred within Accrued expenses and other liabilities in our Consolidated Statements of Financial Condition. Distribution fees are variable and recognized when the uncertainties with respect to the amounts are resolved. Investment Banking. We provide our clients with a full range of financial advisory and underwriting services. Revenues from financial advisory services primarily consist of fees generated in connection with merger, acquisition and restructuring transactions. Advisory fees from mergers and acquisitions engagements are recognized at a point in time when the related transaction is completed, as the performance obligation is to successfully broker a specific transaction. Fees received prior to the completion of the transaction are deferred within Accrued expenses and other liabilities in our Consolidated Statements of Financial Condition. Advisory fees from restructuring engagements are recognized over time using a time elapsed measure of progress as our clients simultaneously receive and consume the benefits of those services as they are provided. A significant portion of the fees we receive for our advisory services are considered variable as they are contingent upon a future event (e.g., completion of a transaction or third-party emergence from bankruptcy) and are excluded from the transaction price until the uncertainty associated with the variable consideration is subsequently resolved, which is expected to occur upon achievement of the specified milestone. Payment for advisory services are generally due promptly upon completion of a specified milestone or, for retainer fees, periodically over the course of the engagement. We recognize a receivable between the date of completion of the milestone and payment by the customer. Expenses associated with investment banking advisory engagements are deferred only to the extent they are explicitly reimbursable by the client and the related revenue is recognized at a point in time. All other investment banking advisory related expenses, including expenses incurred related to restructuring assignments, are expensed as incurred. All investment banking advisory expenses are recognized within their respective expense category in our Consolidated Statements of Earnings and any expenses reimbursed by our clients are recognized as Investment banking revenues. Underwriting services include underwriting and placement agent services in both the equity and debt capital markets, including private equity placements, initial public offerings, follow-on offerings and equity-linked convertible securities transactions and structuring, underwriting and distributing public and private debt, including investment grade debt, high yield bonds, leveraged loans, municipal bonds and mortgage-backed and asset-backed securities. Underwriting and placement agent revenues are recognized at a point in time on trade-date, as the client obtains the control and benefit of the underwriting offering at that point. Costs associated with underwriting transactions are deferred until the related revenue is recognized or the engagement is otherwise concluded, and are recorded on a gross basis within Underwriting costs in our Consolidated Statements of Earnings as we are acting as a principal in the arrangement. Any expenses reimbursed by our clients are recognized as Investment banking revenues. Asset Management Fees. We earn management and performance fees in connection with investment advisory services provided to various funds and accounts, which are satisfied over time and measured using a time elapsed measure of progress as the customer receives the benefits of the services evenly throughout the term of the contract. Management and performance fees are considered variable as they are subject to fluctuation (e.g., changes in assets under management, market performance) and/ or are contingent on a future event during the measurement period (e.g., meeting a specified benchmark) and are recognized only to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty is resolved. Management fees are generally based on month-end assets under management or an agreed upon notional amount and are included in the transaction price at the end of each month when the assets under management or notional amount is known. Performance fees are received when the return on assets under management for a specified performance period exceed certain benchmark returns, “high-water marks” or other performance targets. The performance period related to our performance fees is annual or semi-annual. Accordingly, performance fee revenue will generally be recognized only at the end of the performance period to the extent that the benchmark return has been met.

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Feb. 28, 2021

The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and should be read in conjunction with our consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended November 30, 2020. Certain footnote disclosures included in our Annual Report on Form 10-K for the year ended November 30, 2020 have been condensed or omitted from the consolidated financial statements as they are not required for interim reporting under U.S. GAAP. The Consolidated Financial Statements reflect all adjustments of a normal, recurring nature that are, in the opinion of management, necessary for the fair presentation of the results for the interim period. The results presented in our Consolidated Financial Statements for interim periods are not necessarily indicative of the results for the entire year.

We have made a number of estimates and assumptions relating to the reporting of assets and liabilities, the disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses during the reporting period to prepare these consolidated financial statements in conformity with U.S. GAAP. The most important of these estimates and assumptions relate to fair value measurements, compensation and benefits, goodwill and intangible assets, the ability to realize certain deferred tax assets and the recognition and measurement of uncertain tax positions. Although these and other estimates and assumptions are based on the best available information, actual results could be materially different from these estimates.

Consolidation

Our policy is to consolidate all entities that we control by ownership of a majority of the outstanding voting stock. In addition, we consolidate entities that meet the definition of a variable interest entity (“VIE”) for which we are the primary beneficiary. The primary beneficiary is the party who has the power to direct the activities of a VIE that most significantly impact the entity’s economic performance and who has an obligation to absorb losses of the entity or a right to receive benefits from the entity that could potentially be significant to the entity. For consolidated entities that are less than the holding of equity interest is presented as Noncontrolling interests in our Consolidated Statements of Financial Condition and Consolidated Statements of Changes in Equity. The portion of net earnings attributable to the noncontrolling interests is presented as Net earnings (loss) attributable to noncontrolling interests in our Consolidated Statements of Earnings.

In situations in which we have significant influence, but not control, of an entity that does not qualify as a VIE, we apply either the equity method of accounting or fair value accounting pursuant to the fair value option election under U.S. GAAP, with our portion of net earnings or gains and losses recorded in Other revenues or Principal transactions revenues, respectively. We also have formed nonconsolidated investment vehicles with third-party investors that are typically organized as partnerships or limited liability companies and are carried at fair value. We act as general partner or managing member for these investment vehicles and have generally provided the third-party investors with termination or “kick-out” rights.

Intercompany accounts and transactions are eliminated in consolidation.

Adopted Accounting Standards

Income Taxes. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The objective of the guidance is to simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740 and to provide more consistent application to improve the comparability of financial statements. We adopted the guidance in the first quarter of fiscal 2021 and the adoption did not have a material impact on our consolidated financial statements.

Consolidation. In October 2018, the FASB issued ASU No. 2018-17, Consolidation: Targeted Improvements to Related Party Guidance for Variable Interest Entities. The guidance requires indirect interests held through related parties under common control arrangements be considered on a proportional basis for determining whether fees paid to decision makers and service providers are variable interests. We adopted the guidance in the first quarter of fiscal 2021 and the adoption did not have a material impact on our consolidated financial statements.

Internal-Use Software. In August 2018, the FASB issued ASU No. 2018-15, Intangibles—Goodwill and Other—Internal-Use Software: Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The guidance amends the definition of a hosting arrangement and requires that the customer in a hosting arrangement that is a service contract capitalize certain implementation costs as if the arrangement was an internal-use software project. We adopted the guidance in the first quarter of fiscal 2021 and elected to apply the guidance prospectively to implementation costs incurred after the adoption date. The adoption did not have an impact on our consolidated financial statements on the adoption date.

Defined Benefit Plans. In August 2018, the FASB issued ASU No. 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General: Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans. The objective of the guidance is to improve the effectiveness of disclosure requirements on defined benefit pension plans and other postretirement plans. We adopted the guidance in the first quarter of fiscal 2021 and the adoption did not have a material impact on our consolidated financial statements.

Goodwill. In January 2017, the FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment, which simplifies goodwill impairment testing. We adopted the guidance in the first quarter of fiscal 2021 and the adoption did not have a material impact on our consolidated financial statements.

Financial Instruments—Credit Losses. In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments. The guidance provides for estimating credit losses on financial assets measured at amortized cost by introducing an approach based on expected losses over the financial asset's entire life, recorded at inception or purchase. We adopted the new credit loss guidance on December 1, 2020 and applied a modified retrospective approach through a cumulative-effect adjustment to retained earnings upon adoption. At transition on December 1, 2020, the new accounting guidance's adoption resulted in a decrease in the provision for credit losses of $3.6 million with a corresponding increase in retained earnings of $2.7 million, net of tax. The decrease was attributable to applying a revised provisioning methodology based on historical loss experience for our investment banking fee receivables. The impact upon adoption for our secured financing receivables (reverse repurchases agreements, securities borrowing arrangements, and margin loans) was immaterial because of the contractual collateral maintenance provisions that require that the counterparty continually adjust the amount of collateralization securing the credit exposure on these contracts. For the remaining financial instruments within the guidance's scope, the expected credit losses were also determined to be immaterial considering the counterparty's credit quality, an insignificant history of credit losses, or the short-term nature of the credit exposures. The updated accounting policy for estimating credit losses on financial assets measured at amortized cost as a result of this adoption is outlined below.

Credit Losses on Financial Assets Measured at Amortized Cost

Financial assets measured at amortized cost are presented at the net amount expected to be collected and the measurement of credit losses and any expected increases or decreases in expected credit losses are recognized in earnings. The estimate of expected credit losses involves judgment and based on an assessment over the life of the financial instrument taking into consideration forecasts of expected future economic conditions. In evaluating secured financing receivables (reverse repurchases agreements, securities borrowing arrangements, and margin loans), the underlying collateral maintenance provisions are taken into consideration. The underlying contractual collateral maintenance for significantly all of our secured financing receivables requires that the counterparty continually adjust the collateralization amount, securing the credit exposure on these contracts. Collateralization levels for our secured financing receivables are initially established based upon the counterparty, the type of acceptable collateral that is monitored daily and adjusted to mitigate the potential of any credit losses. Credit losses are not recognized for secured financing receivables where the underlying collateral's fair value is equal to or exceeds the asset's amortized cost basis. In cases where the collateral's fair value does not equal or exceed the amortized cost basis, the allowance for credit losses, if any, is limited to the difference between the fair value of the collateral at the reporting date and the amortized cost basis of the financial assets.

Our receivables from brokers, dealers, and clearing organizations include deposits of cash with exchange clearing organizations to meet margin requirements, amounts due from clearing organizations for daily variation settlements, securities failed-to-deliver or receive, receivables and payables for fees and commissions, and receivables arising from unsettled securities or loans transactions. These receivables generally do not give rise to material credit risk and have a remote probability of default either because of their short-term nature or due to the credit protection framework inherent in the design and operations of brokers, dealers and clearing organizations. As such, generally, no allowance for credit losses is held against these receivables.

For all other financial assets measured at amortized cost, we estimate expected credit losses over the financial assets' life as of the reporting date based on relevant information about past events, current conditions, and reasonable and supportable forecasts.

Revenues from Contracts with Customers

Revenue from contracts with customers is recognized when, or as, we satisfy our performance obligations by transferring the promised goods or services to the customers. A good or service is transferred to a customer when, or as, the customer obtains control of that good or service. A performance obligation may be satisfied over time or at a point in time. Revenue from a performance obligation satisfied over time is recognized by measuring our progress in satisfying the performance obligation in a manner that depicts the transfer of the goods or services to the customer. Revenue from a performance obligation satisfied at a point in time is recognized at the point in time that we determine the customer obtains control over the promised good or service. The amount of revenue recognized reflects the consideration we expect to be entitled to in exchange for those promised goods or services (i.e., the “transaction price”). In determining the transaction price, we consider multiple factors, including the effects of variable consideration. Variable consideration is included in the transaction price only to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainties with respect to the amount are resolved. In determining when to include variable consideration in the transaction price, we consider the range of possible outcomes, the predictive value of our past experiences, the time period of when uncertainties expect to be resolved and the amount of consideration that is susceptible to factors outside of our influence, such as market volatility or the judgment and actions of third-parties.

The following provides detailed information on the recognition of our revenues from contracts with customers:

Commissions and Other Fees. We earn commission and other fee revenue by executing, settling and clearing transactions for clients primarily in equity, equity-related and futures products. Trade execution and clearing services, when provided together, represent a single performance obligation as the services are not separately identifiable in the context of the contract. Commission revenues associated with combined trade execution and clearing services, as well as trade execution services on a standalone basis, are recognized at a point in time on trade-date. Commissions revenues are generally paid on settlement date and we record a receivable between trade-date and payment on settlement date. We permit institutional customers to allocate a portion of their gross commissions to pay for research products and other services provided by third-parties. The amounts allocated for those purposes are commonly referred to as soft dollar arrangements. We act as an agent in the soft dollar arrangements as the customer controls the use of the soft dollars and directs our payments to third-party service providers on its behalf. Accordingly, amounts allocated to soft dollar arrangements are netted against commission revenues in our Consolidated Statements of Earnings. We also earn investment research fees for the sales of our proprietary investment research when a contract with a client has been identified. The delivery of investment research services represents a distinct performance obligation that is satisfied over time when the performance obligation is to provide ongoing access to a research platform or research analysts, with fees recognized on a straight-line basis over the period in which the performance obligation is satisfied. The performance obligation is satisfied at a point in time when the performance obligation is to provide individual interactions with research analysts or research events, with fees recognized on the interaction date.

We earn account advisory and distribution fees in connection with wealth management services. Account advisory fees are recognized over time using the time-elapsed method as we determined that the customer simultaneously receives and consumes the benefits of investment advisory services as they are provided. Account advisory fees may be paid in advance of a specified service period or in arrears at the end of the specified service period (e.g., quarterly). Account advisory fees paid in advance are initially deferred within Accrued expenses and other liabilities in our Consolidated Statements of Financial Condition. Distribution fees are variable and recognized when the uncertainties with respect to the amounts are resolved.

Investment Banking. We provide our clients with a full range of financial advisory and underwriting services. Revenues from financial advisory services primarily consist of fees generated in connection with merger, acquisition and restructuring transactions. Advisory fees from mergers and acquisitions engagements are recognized at a point in time when the related transaction is completed, as the performance obligation is to successfully broker a specific transaction. Fees received prior to the completion of the transaction are deferred within Accrued expenses and other liabilities in our Consolidated Statements of Financial Condition. Advisory fees from restructuring engagements are recognized over time using a time elapsed measure of progress as our clients simultaneously receive and consume the benefits of those services as they are provided. A significant portion of the fees we receive for our advisory services are considered variable as they are contingent upon a future event (e.g., completion of a transaction or third-party emergence from bankruptcy) and are excluded from the transaction price until the uncertainty associated with the variable consideration is subsequently resolved, which is expected to occur upon achievement of the specified milestone. Payment for advisory services are generally due promptly upon completion of a specified milestone or, for retainer fees, periodically over the course of the engagement. We recognize a receivable between the date of completion of the milestone and payment by the customer. Expenses associated with investment banking advisory engagements are deferred only to the extent they are explicitly reimbursable by the client and the related revenue is recognized at a point in time. All other investment banking advisory related expenses, including expenses incurred related to restructuring assignments, are expensed as incurred. All investment banking advisory expenses are recognized within their respective expense category in our Consolidated Statements of Earnings and any expenses reimbursed by our clients are recognized as Investment banking revenues.

Underwriting services include underwriting and placement agent services in both the equity and debt capital markets, including private equity placements, initial public offerings, follow-on offerings and equity-linked convertible securities transactions and structuring, underwriting and distributing public and private debt, including investment grade debt, high yield bonds, leveraged loans, municipal bonds and mortgage-backed and asset-backed securities. Underwriting and placement agent revenues are recognized at a point in time on trade-date, as the client obtains the control and benefit of the underwriting offering at that point. Costs associated with underwriting transactions are deferred until the related revenue is recognized or the engagement is otherwise concluded, and are recorded on a gross basis within Underwriting costs in our Consolidated Statements of Earnings as we are acting as a principal in the arrangement. Any expenses reimbursed by our clients are recognized as Investment banking revenues.

Asset Management Fees. We earn management and performance fees in connection with investment advisory services provided to various funds and accounts, which are satisfied over time and measured using a time elapsed measure of progress as the customer receives the benefits of the services evenly throughout the term of the contract. Management and performance fees are considered variable as they are subject to fluctuation (e.g., changes in assets under management, market performance) and/ or are contingent on a future event during the measurement period (e.g., meeting a specified benchmark) and are recognized only to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty is resolved. Management fees are generally based on month-end assets under management or an agreed upon notional amount and are included in the transaction price at the end of each month when the assets under management or notional amount is known. Performance fees are received when the return on assets under management for a specified performance period exceed certain benchmark returns, “high-water marks” or other performance targets. The performance period related to our performance fees is annual or semi-annual. Accordingly, performance fee revenue will generally be recognized only at the end of the performance period to the extent that the benchmark return has been met.