| Summary of Significant Accounting Policies (Policies) | 12 Months Ended |
| Dec. 31, 2020 |
| Summary of Significant Accounting Policies | |
| Basis of Presentation | Basis of Presentation Our consolidated financial statements have been prepared according to U.S. GAAP and include all majority-owned subsidiaries and consolidated seeded investment products. Intercompany accounts and transactions have been eliminated in consolidation. Events subsequent to the balance sheet date have been evaluated for inclusion in the accompanying consolidated financial statements through the issuance date. Certain prior year amounts in our Consolidated Statements of Comprehensive Income have been reclassified to conform to current year presentation. Specifically, intangible asset impairments recognized during the years ended December 31, 2019 and 2018 that were previously classified in depreciation and amortization were reclassified to impairment of goodwill and intangible assets on the Consolidated Statements of Comprehensive Income. There is no change to total operating expenses as a result of this change in classification. |
| Accounting Estimates | Accounting Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates and the differences could be material. Our significant estimates relate to investment securities, acquisition accounting, goodwill and intangible assets, retirement benefit assets and obligations, contingent consideration, equity compensation and income taxes. |
| Segment Information | Segment Information We are a global asset manager and manage a range of investment products, operating across various product lines, distribution channels and geographic regions. However, resources are allocated and the business is managed by the chief operating decision-maker, the CEO, on an aggregated basis. Strategic and financial management decisions are determined centrally by the CEO and, on this basis, we operate as a single segment investment management business. |
| Consolidation of Investment Products | Consolidation of Investment Products We perform periodic consolidation analyses of our seeded investment products to determine if the product is a VIE or a VRE. Factors considered in this assessment include the product’s legal organization, the product’s capital structure and equity ownership, and any de facto agent implications of our involvement with the product. Investment products that are determined to be VIEs are consolidated if we are the primary beneficiary of the product. VREs are consolidated if we hold the majority voting interest. Upon the occurrence of certain events (such as contributions and redemptions, either by JHG or third parties, or amendments to the governing documents of our investment products), management reviews and reconsiders its previous conclusion regarding the status of a product as a VIE or a VRE. Additionally, management continually reconsiders whether we are considered a VIE’s primary beneficiary, and thus would be required to consolidate such product or discontinue consolidation of the VIE if we are no longer considered the primary beneficiary. Variable Interest Entities Certain investment products for which a controlling financial interest is achieved through arrangements that do not involve or are not directly linked to voting interests are considered VIEs. We review factors, including whether or not (i) the product has equity that is sufficient to permit it to finance its activities without additional subordinated support from other parties and (ii) the equity holders at risk have the obligation to absorb losses, the right to receive residual returns and the right to direct the activities of the product that most significantly impact the product’s economic performance, to determine if the investment product is a VIE. We re-evaluate such factors as facts and circumstances change. We consolidate a VIE if we are the VIE’s primary beneficiary. The primary beneficiary of a VIE is defined as the variable interest holder that has a controlling financial interest in the VIE. A controlling financial interest is defined as (i) the power to direct the activities of the VIE that most significantly impact its economic performance and (ii) the obligation to absorb losses of the product or the right to receive benefits from the product that potentially could be significant to the VIE. We are the manager of various types of seeded investment products, which may be considered VIEs. Our involvement in financing the operations of the VIEs is generally limited to our investments in the products. VIEs are generally subject to consolidation by us at lower ownership percentages than the 50% threshold applied to VREs and are also subject to specific disclosure requirements. Voting Rights Entities We consolidate seeded investment products accounted for as VREs when we are considered to control such products, which generally exists if we have a greater than 50% voting equity interest. |
| Property, Equipment and Software | Property, Equipment and Software Property, equipment and software are recorded at cost. Depreciation is recorded using the straight-line method over the estimated useful life of the related assets (or the lease term, if shorter). The following table presents depreciation expense for the years ended December 31, 2020, 2019 and 2018 (in millions). Year ended December 31, 2020 2019 2018 Depreciation expense $ 26.0 $ 23.5 $ 24.7 Property, equipment and software as of December 31, 2020 and 2019, are summarized as follows (in millions): Depreciation December 31, period 2020 2019 Furniture, fixtures and computer equipment 3-10 years $ 18.1 $ 36.1 Leasehold improvements Over the shorter of 20 years or the period of the lease 40.2 38.0 Computer software 3-7 years 91.4 83.1 Property, equipment and software, gross $ 149.7 $ 157.2 Accumulated depreciation (71.8) (72.5) Property, equipment and software, net $ 77.9 $ 84.7 Computer software is recorded at cost and depreciated over its estimated useful life. Internal and external costs incurred in connection with researching or obtaining computer software for internal use are expensed as incurred during the preliminary project stage, as are post-implementation training and maintenance costs. Internal and external costs incurred for internal use software during the application development stage are capitalized until such time that the software is substantially complete and ready for its intended use. Application development stage costs are depreciated on a straight-line basis over the estimated useful life of the software. An impairment loss is recognized if the carrying value of the asset exceeds the fair value of the asset. The amount of the impairment loss is equal to the excess of the carrying amount over the fair value. The evaluation is based on an estimate of the future cash flows expected to result from the use of the asset and its eventual disposal. If expected future undiscounted cash flows are less than the carrying amount of the asset, an impairment loss is recognized in an amount equal to the excess of the carrying amount of the asset over the fair value of the asset. There were no impairments of property, equipment and software for the years ended December 31, 2020, 2019 and 2018. |
| Deferred Commissions | Deferred Commissions Initial sales commissions paid to and received from financial intermediaries on sales of certain wholesale products are deferred and amortized over various periods, not exceeding four years. The amortization period is based on the average expected life of the product on which the commission is received. Deferred commissions are recognized as components of other current assets and of accounts payable and accrued liabilities on the Consolidated Balance Sheets. |
| Equity Method Investments | Equity Method Investments Our investment in equity method investees, where we do not control the investee but can exert significant influence over the financial and operating policies (generally considered to be ownership between 20% and 50%), is accounted for using the equity method of accounting. Investments are initially recognized at cost when purchased for cash or at the fair value of shares received where acquired as part of a wider transaction. The investments are subsequently carried at cost adjusted for our share of net income or loss and other changes in comprehensive income of the equity method investee, less any dividends or distributions received by us. The Consolidated Statements of Comprehensive Income includes our share of net income or loss for the year, or period of ownership, if shorter, within investment gains (losses), net. |
| Financial Instruments | Financial Instruments Financial assets are recognized at fair value in the Consolidated Balance Sheets when we become a party to the contractual provisions of an instrument. The fair value recognized is adjusted for transaction costs, except for financial assets classified as trading where transaction costs are recognized immediately in net income. Financial assets are derecognized when the rights to receive cash flows from the investments have expired or where they have been transferred and we have also transferred substantially all the risks and rewards of ownership. Purchases and sales of financial assets are recognized at the trade date. Delivery and settlement terms are usually determined by established practices in the market concerned. Debt securities, equity securities and holdings in pooled funds are measured at subsequent reporting dates at fair value. We determine the classification of its financial assets on initial recognition. Unrealized gains and losses represent the difference between the fair value of the financial asset at the reporting date and cost or, if these have been previously revalued, the fair value at the last reporting date. Realized gains and losses on financial assets are calculated as the difference between the net sales proceeds and cost or amortized cost using the specific identification method. Financial liabilities, excluding contingent consideration, derivatives, fund deferral liabilities and redeemable noncontrolling interests in consolidated funds, which are stated at fair value, are stated at amortized cost using the effective interest rate method. Financial liabilities stated at amortized cost include our long-term debt. Amortized cost is calculated by taking into account any issuance costs and any discount or premium on settlement. Financial liabilities cease to be recognized when the obligation under the liability has been discharged or cancelled or has expired. |
| Investment Securities | Investment Securities Seeded Investment Products We periodically add new investment strategies to our investment product offerings by providing the initial cash investment, or seeding. The primary purpose of seeded investment products is to generate an investment performance track record in a product to attract third-party investors. Seeded investment products are initially consolidated and the individual securities within the portfolio are accounted for as trading securities. The change in fair value of seeded investment products is recorded in investment gains (losses), net on our Consolidated Statements of Comprehensive Income. Noncontrolling interests in seeded investment products represent third-party ownership interests and are included in investment securities on our Consolidated Balance Sheets. These assets are not available for general corporate purposes and may be redeemed by the third parties at any time. Refer to the Consolidation of Investment Products section in this note for information regarding the consolidation of certain seeded investment products. We may redeem invested seed capital for a variety of reasons, including when third-party investments in the relevant product are sufficient to sustain the given investment strategy. The length of time we hold a majority interest in a product varies based on a number of factors, including market demand, market conditions and investment performance. Investments in Advised Mutual Funds and Investments Related to the Economic Hedging of Deferred Compensation We grant mutual fund share awards to employees that are indexed to certain funds managed by us. Upon vesting, participants receive the value of the mutual fund share awards adjusted for gains or losses attributable to the mutual funds to which the award was indexed, subject to tax withholding, or participants receive shares in the mutual fund. When investments in our fund products are purchased and held against deferred compensation liabilities, any movement in the fair value of the assets and corresponding movements in the deferred compensation liability are recognized in the Consolidated Statements of Comprehensive Income. We maintain deferred compensation plans for certain highly compensated employees and members of the Board of Directors. Eligible participants may defer a portion of their compensation and have the ability to earn a return by indexing their deferrals to mutual funds managed by us and our subsidiaries. We make no contributions to the plans. To protect against market variability of the liability, we create an economic hedge by investing in mutual funds that are consistent with the deferred amounts and mutual fund elections of the participants. Such investments remain assets of JHG. Changes in market value of the liability to participants are recognized as long-term incentive plans in our Consolidated Statements of Comprehensive Income, and changes in the market value of the mutual fund securities are recognized in investment gains (losses), net on our Consolidated Statements of Comprehensive Income. Other Investment Securities Other investment securities primarily represent investments in our fund products held by employee benefit trusts, certain investments in unconsolidated seed capital investments and certain investments in consolidated funds. Gains and losses arising from changes in the fair value of these securities are included within investments gains (losses), net in the Consolidated Statements of Comprehensive Income. Where investments in our fund products are held against outstanding deferred compensation liabilities, any movement in the fair value of these assets and corresponding movements in the deferred compensation liability are recognized in the Consolidated Statements of Comprehensive Income. Trade Receivables Trade receivables, which generally have 30-day OEIC and Unit Trust Receivables and Payables OEIC and unit trust receivables and payables are in relation to the purchase of units/shares (by investors) and the liquidation of units/shares (owned by trustees). The amounts are dependent on the level of trading and fund switches in the four working days leading up to the end of the period. Since they are held with different counterparties, the amounts are presented gross on our Consolidated Balance Sheets. |
| Cash and Cash Equivalents | Cash and Cash Equivalents Cash and cash equivalents primarily consist of cash held at banks, on-demand deposits, highly liquid short-term government securities and investments in money market instruments with a maturity date of three months or less. Cash balances maintained by consolidated VREs are not considered legally restricted and are included in cash and cash equivalents on the Consolidated Balance Sheets. Cash balances held by consolidated VIEs are disclosed separately as a component of assets of consolidated VIEs on the Consolidated Balance Sheets. |
| Derivative Instruments | Derivative Instruments We may, from time to time, use derivative financial instruments to mitigate price, interest rate, foreign currency and credit risk. We do not designate derivative instruments as hedges for accounting purposes, with the exception of certain foreign currency forward contracts used for net investment hedging. Derivative instruments are measured at fair value and classified as either other current assets or accounts payable and accrued liabilities on our Consolidated Balance Sheets. Changes in the fair value of derivative instruments are recorded within investment gains (losses), net in our Consolidated Statements of Comprehensive Income. Changes in fair value of foreign currency forward contracts designated as hedges for accounting purposes are recognized in accumulated other comprehensive income under net investment hedge accounting. Our consolidated seed investments may also be party to derivative instruments. These derivative instruments are disclosed separately from our corporate derivative instruments. Refer to Note 6 — Investment Securities. |
| Leases | Leases We determine if an arrangement is a lease at inception. Operating lease right-of-use (“ROU”) assets are included in other non-current assets in our Consolidated Balance Sheets. The current and non-current portions of operating lease liabilities are included in accounts payable and accrued liabilities and in other non-current liabilities, respectively. Finance lease ROU assets are included in property, equipment and software, net, and finance lease liabilities are included in other non-current liabilities. ROU assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that the option will be exercised. Lease expense for lease payments is recognized on a straight-line basis over the lease term. |
| Nonredeemable Noncontrolling Interests and Redeemable Noncontrolling Interests | Nonredeemable Noncontrolling Interests and Redeemable Noncontrolling Interests Nonredeemable noncontrolling interests that are not subject to redemption rights are classified in permanent equity. Redeemable noncontrolling interests are classified outside of permanent equity on the Consolidated Balance Sheets and are measured at the estimated fair value as of the balance sheet date. Noncontrolling interests in consolidated seed investments are classified as redeemable noncontrolling interests where there is an obligation on the fund to repurchase units at the investor’s request. Refer to Note 14 — Noncontrolling Interests for further information. |
| Fair Value Measurements | Fair Value Measurements Fair value is the price that would be received to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. The fair value of financial instruments traded in active markets (such as publicly traded securities and derivatives) is based on quoted market prices at the reporting date. The quoted market price used for financial instruments is the last traded market price for both financial assets and financial liabilities where the last traded price falls within the bid ask spread. In circumstances where the last traded price is not within the bid ask spread, management will determine the point within the bid ask spread that is most representative of fair value current bid price. The fair value of financial instruments that are not traded in an active market is determined using valuation techniques commonly used by market participants, including the use of comparable recent arm’s length transactions, DCF analysis and option pricing models. Estimating fair value requires significant management judgment, including benchmarking to similar instruments with observable market data and applying appropriate discounts that reflect differences between the securities that we are valuing and the selected benchmark. Measurements of fair value are classified within a hierarchy that prioritizes the inputs to valuation techniques used to measure fair value based on whether the inputs to those valuation techniques are observable or unobservable. The valuation hierarchy contains three levels: ● Level 1 — Valuation inputs are unadjusted quoted market prices for identical assets or liabilities in active markets. ● Level 2 — Valuation inputs are quoted market prices for identical assets or liabilities in markets that are not active, quoted market prices for similar assets and liabilities in active markets, and other observable inputs directly or indirectly related to the asset or liability being measured. ● The valuation of an asset or liability may involve inputs from more than one level of the hierarchy. The level in the fair value hierarchy within which a fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the fair value measurement. Level 1 Fair Value Measurements Our Level 1 fair value measurements consist mostly of seeded investment products, investments in advised mutual funds, cash equivalents and investments related to deferred compensation plans with quoted market prices in active markets. The fair value level of consolidated seeded investment products is determined by the underlying securities of the product. The fair value level of unconsolidated seeded investment products is determined using the underlying inputs used in the calculation of the NAV of each product. Level 2 Fair Value Measurements Our Level 2 fair value measurements consist mostly of consolidated seeded investment products and our long-term debt. The fair value of consolidated seeded investment products is determined by the underlying securities of the product. The fair value of our long-term debt is determined using broker quotes and recent trading activity, which are considered Level 2 inputs. Level 3 Fair Value Measurements Our assets and liabilities measured at Level 3 are primarily private equity investments, contingent deferred consideration and deferred compensation liabilities that are held against investments in our fund products, where the significant valuation inputs are unobservable. Private equity investments are valued using a combination of the enterprise value/EBITDA multiple method and the DCF method. Significant unobservable inputs include discount rates, EBITDA multiple and price-earnings ratio, taking into account management’s experience and knowledge of market conditions of the specific industries. Details of inputs used to calculate the fair value of contingent deferred consideration can be found in Note 10 — Fair Value Measurements. Nonrecurring Fair Value Measurements Nonrecurring Level 3 fair value measurements include goodwill and intangible assets. We measure the fair value of goodwill and intangible assets on initial recognition using DCF analysis that requires assumptions regarding projected future earnings and discount rates. Because of the significance of the unobservable inputs in the fair value measurements of these assets and liabilities, such measurements are classified as Level 3. See the Goodwill and Intangible Assets, Net accounting policy set forth within this note for further information. |
| Income Taxes | Income Taxes We provide for current tax expense according to the tax laws in each jurisdiction in which we operate, using tax rates and laws that have been enacted by the balance sheet date. Deferred income tax assets and liabilities are recorded for temporary differences between the financial statement and income tax basis of assets and liabilities as measured by the enacted income tax rates that may be in effect when these differences reverse. The effect of changes in tax rates on our deferred tax assets and liabilities is recognized as income tax within net income in the period that includes the enactment date. Significant management judgment is required in developing our provision for income taxes, including the valuation allowances that might be required against deferred tax assets and the evaluation of unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return. We periodically assess the recoverability of our deferred tax assets and the need for valuation allowances on these assets. We make these assessments based on the weight of available evidence regarding possible sources of future taxable income and estimates relating to the future performance of the business that results in taxable income. In evaluating uncertain tax positions, we consider the probability that the tax benefit can be sustained on examination by a taxing authority on the basis of its technical merits (“the recognition threshold”). For tax positions meeting this threshold, the amount recognized in the financial statements is the benefit expected to be realized upon settlement with the taxing authority on the basis of a cumulative-probability assessment of the possible outcomes. For tax positions not meeting the recognition threshold, no financial statement benefit is recognized. We recognize the accrual of interest and penalties on uncertain tax positions as a component of the income tax provision. |
| Revenue Recognition Policy | Revenue Recognition Revenue is measured and recognized based on the five-step process outlined in U.S. GAAP. Revenue is determined based on the transaction price negotiated with the customer, net of rebates. Management fees, performance fees, shareowner servicing fees and other revenue are derived from providing professional services to manage investment products. Management fees are earned over time as services are provided and are generally based on a percentage of the market value of AUM. These fees are calculated as a percentage of either the daily, month-end or quarter-end average asset balance in accordance with contractual agreements. Performance fees are specified in certain fund and client contracts and are based on investment performance either on an absolute basis or compared to an established index over a specified period of time. Performance fees are generated on certain management contracts when performance hurdles or other specified criteria are achieved. Performance fees for all fund ranges and separate accounts are recognized when it is probable that a significant reversal of revenue recognized will not occur in future periods. There are no performance fee contracts where revenue can be clawed back. There are no cumulative revenues recognized that would be reversed if all of the existing investments became worthless. Management fees are primarily received monthly or quarterly, while performance fees are usually received monthly, quarterly or annually, although the frequency of receipt varies between agreements. Management and performance fee revenue earned but not yet received is recognized within fees and other receivables on our Consolidated Balance Sheets. Shareowner servicing fees are earned for services rendered related to transfer agent and administrative activities performed for investment products. These services are transferred over time and are generally based on a percentage of the market value of AUM. Other revenue includes distribution and servicing fees earned from U.S. mutual funds associated with mutual fund transfer agent, accounting, shareholder servicing and participant recordkeeping activities. These services are transferred over time and are generally based on a percentage of the market value of AUM. U.S. Mutual Fund Performance Fees The investment management fee paid by each U.S. mutual fund subject to a performance fee is the base management fee plus or minus a performance fee adjustment as determined by the relative investment performance of the fund compared to a specified benchmark index. Under the performance-based fee structure, the investment advisory fee paid by each fund consists of two components: (i) a base fee calculated by applying the contractual fixed rate of the advisory fee to the fund’s average daily net assets during the previous month, plus or minus (ii) a performance fee adjustment calculated by applying a variable rate of up to 0.15% to the fund’s average daily net assets during the performance measurement period. The performance measurement period begins as a trailing period ranging from 12 to 18 months , and each subsequent month is added to each successive performance measurement period until a 36-month period is achieved. At that point, the measurement period becomes a rolling 36-month period. The addition of performance fees to all funds without such fees is subject to the approval of both a majority of the shareholders of such funds and the funds’ independent board of trustees. Principal Versus Agent We utilize third-party intermediaries to fulfill certain performance obligations in our revenue agreements. Generally, we are deemed to be the principal in these arrangements because we control the investment management and other related services before they are transferred to customers. Such control is evidenced by our primary responsibility to customers, the ability to negotiate the third-party contract price and select and direct third-party service providers, or a combination of these factors. Therefore, distribution and service fee revenues and the related third-party distribution and service expenses are reported on a gross basis. |
| Operating Expenses | Operating Expenses Operating expenses are accrued and recognized as incurred. |
| Stock-Based Compensation | Stock-Based Compensation We grant stock-based awards to our employees, all of which are classified as equity settled stock-based payments. Equity settled stock-based payments are measured at the fair value of the shares at the grant date. The awards are expensed, with a corresponding increase in reserves, on a graded basis over the vesting period. Forfeitures are recognized as they occur. The grant date fair value for stock options is determined using the Black-Scholes option pricing model, and the grant date fair value of restricted stock is determined from the market price on the date of grant. The Black-Scholes model requires management to determine certain variables; the assumptions used in the Black-Scholes option pricing model include dividend yield, expected volatility, risk-free interest rate and expected life. The dividend yield and expected volatility are determined using historical Group data. The risk-free interest rate for options granted is based on the three-year UK treasury coupon at the time of the grant. The expected life of the stock options is the same as the service conditions applicable to all Company awards. We generally use the Monte Carlo model to determine the fair value of performance-based awards. The assumptions used in the Monte Carlo model include dividend yield, share price volatility and discount rate. We had no stock-based compensation costs included in retained earnings during the years ended December 31, 2020, 2019 and 2018. We had no proceeds or accumulated balance from stock-based compensation plans included in retained earnings for the years ended December 31, 2020, 2019 and 2018. |
| Commissions | Commissions Commissions on management fees are accounted for on an accrual basis and are recognized in the accounting period in which the associated management fee is earned. |
| Earnings Per Share | Earnings Per Share Basic earnings per share attributable to our shareholders is calculated by dividing net income (adjusted for the allocation of earnings to participating restricted stock awards) by the weighted average number of shares outstanding. We have calculated earnings per share using the two-class method. There are some participating restricted stock awards that are paid non-forfeitable dividends. Under the two-class method, net income attributable to JHG is adjusted for the allocation of earnings to participating restricted stock awards. Diluted earnings per share is calculated in a similar way to basic earnings per share but is adjusted for the effect of potential common shares unless they are anti-dilutive. |
| Contingent Consideration | Contingent Consideration Contingent consideration, resulting from business combinations, is recognized at fair value at the acquisition date as part of the business combination and discounted where the time value of money is material. The determination of the fair value is based on discounted cash flows, with the key assumptions being the probability of meeting each performance target and the discount factor applied. When the contingent consideration meets the definition of a financial liability, it is subsequently re-measured to fair value at each reporting date through other non-operating income. Finance charges, where discounting has been applied, are also recognized through other non-operating income. See Note 10 — Fair Value Measurements for further information about contingent consideration on acquisitions taking place during the reporting period. |
| Goodwill and Intangible Assets, Net | Goodwill and Intangible Assets, Net Goodwill represents the excess of cost over the fair value of the identifiable net assets of acquired companies and is capitalized in the Consolidated Balance Sheets. Intangible assets consist primarily of investment management contracts and trademarks acquired as part of business combinations. Investment management contracts have been identified as separately identifiable intangible assets arising on the acquisition of subsidiaries or businesses. Such contracts are recognized at the present value of the expected future cash flows of the investment management contracts at the date of acquisition. Investment management contracts may be classified as either indefinite-lived investment management contracts or definite-lived client relationships. Indefinite-lived intangible assets comprise investment management agreements where the agreements are with investment companies themselves and not with underlying investors. Such contracts are typically renewed indefinitely and, therefore, we consider the contract life to be indefinite and, as a result, the contracts are not amortized. Definite-lived intangible assets comprise investment management agreements where the agreements are with the underlying investor. Definite-lived client relationships are amortized on a straight-line basis over their remaining useful lives. Goodwill and indefinite-lived intangible assets are reviewed for impairment annually or more frequently if changes in circumstances indicate that the carrying value may be impaired. Intangible assets subject to amortization are tested for impairment whenever events or circumstances indicate that the carrying value may not be recoverable. If the fair value of the sole reporting unit or intangible asset is less than the carrying amount, an impairment is recognized. Any impairment is recognized immediately through net income and cannot subsequently be reversed. We have determined that we have one reporting unit for goodwill impairment testing purposes, which is consistent with internal management reporting and management’s oversight of operations. We may first assess goodwill for impairment using qualitative factors to determine whether it is necessary to perform a quantitative impairment test. Goodwill and intangible assets require significant management estimates and judgment, including the valuation and expected life determination upon inception and the ongoing evaluation for impairment. |
| Foreign Currency | Foreign Currency Transactions in foreign currencies are recorded at the appropriate exchange rate prevailing at the date of the transaction. Foreign currency monetary balances at the reporting date are converted at the prevailing exchange rate. Foreign currency non-monetary balances carried at fair value or cost are translated at the rates prevailing at the date when the fair value or cost is determined. Gains and losses arising on retranslation are recognized as a component of net income. On consolidation, the assets and liabilities of our operations for which the functional currency is not USD are translated at exchange rates prevailing at the reporting date. Income and expense items are recognized at an average monthly exchange rate. Exchange differences arising, if any, are taken through other comprehensive income to accumulated other comprehensive income. Where net investment hedge accounting is applied using foreign currency forward contracts, the fair value movement on these contracts is also recognized within accumulated other comprehensive income. In the period in which an operation is disposed of, translation differences previously recognized in accumulated other comprehensive income are recognized as a component of net income. |
| Post-Employment Retirement Benefits | Post-Employment Retirement Benefits We provide employees with retirement benefits through both defined benefit and defined contribution plans. The assets of these plans are held separately from our general assets in trustee-administered funds. Contributions to the defined contribution plan are expensed to employee compensation and benefits on the Consolidated Statements of Comprehensive Income when they become payable. Defined benefit obligations and the cost of providing benefits are determined annually by independent qualified actuaries using the projected unit credit method. Our annual measurement date of the defined benefit plan is December 31. The defined benefit obligation is measured as the present value of the estimated future cash outflows using a discount rate based on AA-rated corporate bond yields of appropriate duration. The plan assets are recognized at fair value. The funded status of the defined benefit pension plans (the resulting surplus or deficit of defined benefit assets less liabilities) is recognized in the Consolidated Balance Sheets, net of any taxes that would be deducted at source. Actuarial gains and losses arise as a result of the difference between actual experience and actuarial assumptions. We have adopted the 10% corridor method for recognizing actuarial gains and losses, which means that cumulative actuarial gains or losses up to an amount equal to 10% of the higher of the liabilities or assets of the scheme (the corridor) have no immediate impact on net income and are instead recognized through other comprehensive income. Cumulative gains or losses greater than the corridor are amortized to net income over the average remaining future working lifetime of the active members in the plan. Net periodic benefit cost is recorded as a component of net income in the Consolidated Statements of Comprehensive Income and includes service cost, interest cost, expected return on plan assets and any actuarial gains and losses previously recognized as a component of other comprehensive income that have been amortized in the period. Net periodic benefit costs, with the exception of service costs, are recognized in other non-operating income in the consolidated statements of income; service costs are recognized in employee compensation and benefits. See Note 16 — Retirement Benefit Plans for further discussion of our pension plans. |
| Common Stock | Common Stock JHG’s ordinary shares, par value $1.50 per share, are classified as equity instruments. Equity shares issued by us are recorded at the fair value of the proceeds received or the market price on the day of issue. Direct issue costs, net of tax, are deducted from additional paid-in-capital within equity. Treasury shares held are equity shares of JHG acquired by or issued to employee benefit trusts. Treasury shares held are recorded at cost and are deducted from equity. No gain or loss is recognized in the Consolidated Statements of Comprehensive Income on the purchase, issue, sale or cancellation of our own equity shares . |
