Summary of Significant Accounting Policies	12 Months Ended
Sep. 30, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. The Company maintains a 52-53 week fiscal year ending on the last Friday in each reporting period. The fiscal year ended September 30, 2020 ended on September 25, 2020, the fiscal year ended September 30, 2019 ended on September 27, 2019 and the fiscal year ended September 30, 2018 ended on September 28, 2018. For convenience purposes, the Company continues to date its financial statements as of September 30. Basis of Consolidation The accompanying financial statements present the consolidated accounts of all entities in which the Company has a controlling voting interest and/or variable interest required to be consolidated in accordance with U.S. GAAP. All intercompany balances and transactions have been eliminated. Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 810, Consolidation (“ASC 810”) requires the Company first evaluate its investments to determine if any investments qualify as a variable interest entity (“VIE”). A VIE is consolidated if the Company is deemed to be the primary beneficiary of the VIE, which is the party involved with the VIE that has both (i) the power to control the most significant activities of the VIE and (ii) either the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. If an entity is not deemed to be a VIE, the Company consolidates the entity if the Company has a controlling voting interest. Common Stock On February 28, 2020, the Company amended its certificate of incorporation to increase its authorized capital stock to 2,100,000,000 shares, consisting of 1,000,000,000 shares of Class A Common Stock, 1,000,000,000 shares of Class B Common Stock, and 100,000,000 shares of preferred stock, par value $1.00 per share. In addition, the February 28, 2020 amendment to the Company’s certificate of incorporation also gave effect to the reclassification and 477,242.614671815-for-1 stock split of the Company’s existing common stock outstanding into 510,000,000 shares of Class B Common Stock. This stock split has been retrospectively presented throughout the financial statements. Upon completion of the IPO and the exercise in full of the underwriters’ option to purchase additional shares, 88,550,000 shares of Class A Common Stock, 421,450,000 shares of Class B Common Stock and no shares of preferred stock were outstanding. The Company has also issued 28,361 shares under the Warner Music Group Corp. 2020 Omnibus Incentive Plan as of September 30, 2020. See Note 13, Stock-Based Compensation Plans. Earnings per Share The consolidated statements of operations present basic and diluted earnings per share (“EPS”). Prior to the completion of the IPO, basic and diluted earnings (loss) per share were computed by dividing net income (loss) available to common stockholders by the weighted average number of outstanding common shares less shares issued for the exercise of the deferred equity units since these units were mandatorily redeemable in cash. As such, the deferred equity units were excluded from the denominator of the basic and diluted EPS calculation prior to the IPO completion. Subsequent to the completion of the IPO, the Company utilizes the two-class method to report earnings (loss) per share. The two-class method is an earnings (loss) allocation formula that determines earnings (loss) per share for each class of common stock according to dividends declared and participation rights in undistributed earnings (losses). Undistributed earnings allocated to participating securities are subtracted from net income in determining net income attributable to common stockholders. Since there was a loss for the fiscal year ended September 30, 2020, no earnings were allocated to our participating securities or our post-modification deferred equity units that are no longer mandatorily redeemable in cash after the IPO. See also Note 3, Earnings Per Share. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and the accompanying notes. Actual results could differ from those estimates. Business Combinations The Company accounts for its business acquisitions under the FASB ASC Topic 805, Business Combinations (“ASC 805”) guidance for business combinations. The total cost of acquisitions is allocated to the underlying identifiable net assets based on their respective estimated fair values. The excess of the purchase price over the estimated fair values of the net assets acquired is recorded as goodwill. Determining the fair value of assets acquired and liabilities assumed requires management’s judgment and often involves the use of significant estimates and assumptions, including assumptions with respect to future cash inflows and outflows, discount rates, asset lives and market multiples, among other items. Cash and Equivalents The Company considers all highly liquid investments with maturities of three months or less at the date of purchase to be cash equivalents. The Company includes checks outstanding at year end as a component of accounts payable, instead of a reduction in its cash balance where there is not a right of offset in the related bank accounts. Accounts Receivable Credit is extended to customers based upon an evaluation of the customer’s financial condition. Accounts receivable are recorded at net realizable value. Refund Liabilities and Allowance for Doubtful Accounts Management’s estimate of Recorded Music physical products that will be returned, and the amount of receivables that will ultimately be collected is an area of judgment affecting reported revenues and operating income. In determining the estimate of physical product sales that will be returned, management analyzes vendor sales of product, historical return trends, current economic conditions, changes in customer demand and commercial acceptance of the Company’s products. Based on this information, management reserves a percentage of each dollar of physical product sales that provide the customer with the right of return. The provision for such sales returns is reflected as a reduction in the revenues from the related sale. Similarly, the Company monitors customer credit risk related to accounts receivable. Significant judgments and estimates are involved in evaluating if such amounts will ultimately be fully collected. On an ongoing basis, the Company tracks customer exposure based on news reports, ratings agency information, reviews of customer financial data and direct dialogue with customers. Counterparties that are determined to be of a higher risk are evaluated to assess whether the payment terms previously granted to them should be modified. The Company also monitors payment levels from customers, and a provision for estimated uncollectible amounts is maintained based on such payment levels, historical experience, management’s views on trends in the overall receivable agings and, for larger accounts, analyses of specific risks on a customer-specific basis. Concentration of Credit Risk Customer credit risk represents the potential for financial loss if a customer is unwilling or unable to meet its agreed upon contractual payment obligations. As of September 30, 2020 and September 30, 2019, Spotify represented 16% and 13%, respectively, of the Company’s accounts receivable balance. No other single customer accounted for more than 10% of accounts receivable in either period. The Company, by policy, routinely assesses the financial strength of its customers. As such, the Company does not believe there is any significant collection risk. In the Music Publishing business, the Company collects a significant portion of its royalties from copyright collecting societies around the world. Collecting societies and associations generally are not-for-profit organizations that represent composers, songwriters and music publishers. These organizations seek to protect the rights of their members by licensing, collecting license fees and distributing royalties for the use of the members’ works. Accordingly, the Company does not believe there is any significant collection risk from such societies. Inventories Inventories consist of merchandise, vinyl, CDs, DVDs and other related music products. Inventories are stated at the lower of cost or estimated realizable value. Cost is determined using first-in, first-out (“FIFO”) and average cost methods, which approximate cost under the FIFO method. Returned goods included in inventory are valued at estimated realizable value, but not in excess of cost. Derivative and Financial Instruments The Company accounts for these investments as required by the FASB ASC Topic 815, Derivatives and Hedging (“ASC 815”), which requires that all derivative instruments be recognized on the balance sheet at fair value. ASC 815 also provides that, for derivative instruments that qualify for hedge accounting, changes in the fair value are either (a) offset against the change in fair value of the hedged assets, liabilities or firm commitments through earnings or (b) recognized in equity until the hedged item is recognized in earnings, depending on whether the derivative is being used to hedge changes in fair value or cash flows. In addition, the ineffective portion of a derivative’s change in fair value is immediately recognized in earnings. The carrying value of the Company’s financial instruments approximates fair value, except for certain differences relating to long-term, fixed-rate debt (see Note 19) and other financial instruments that are not significant. The fair value of financial instruments is generally determined by reference to market values resulting from trading on a national securities exchange or an over-the-counter market. In cases where quoted market prices are not available, fair value is based on estimates using present value or other valuation techniques. Property, Plant and Equipment Property, plant and equipment acquired in conjunction with business combinations are recorded at fair value. All other additions are recorded at historical cost. Depreciation is calculated using the straight-line method based upon the estimated useful lives of depreciable assets commencing at the date assets are placed in service as follows: five to seven years for furniture and fixtures, periods of up to five years for computer equipment and software and periods of up to thirteen years for machinery and equipment. Buildings are depreciated over periods of up to forty years. Leasehold improvements are depreciated over the life of the lease or estimated useful lives of the improvements, whichever period is shorter. The Company accounts for costs incurred to develop or purchase computer software for internal use in accordance with FASB ASC Subtopic 350-40, Internal-Use Software (“ASC 350-40”). As required by ASC 350-40, the Company capitalizes the costs incurred during the application development stage, which include costs to design the software configuration and interfaces, coding, installation, and testing. Accounting for Goodwill and Other Intangible Assets In accordance with FASB ASC Topic 350, Intangibles—Goodwill and Other (“ASC 350”), the Company accounts for business combinations using the acquisition method of accounting and accordingly, the assets and liabilities of the acquired entities are recorded at their estimated fair values at the acquisition date. Goodwill represents the excess of the purchase price over the fair value of net assets, including the amount assigned to identifiable intangible assets. Pursuant to this guidance, the Company does not amortize the goodwill balance and instead, performs an annual impairment test to assess the fair value of goodwill over its carrying value. Identifiable intangible assets with finite lives are amortized over their useful lives. Goodwill is tested annually for impairment on July 1 and at any time upon occurrence of certain events or changes in circumstances. ASC 350 gives an entity the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit or intangible asset is less than its carrying amount. If an entity determines it is not more likely than not that the fair value of a reporting unit or intangible asset is less than its carrying amount, then performing the quantitative impairment test is unnecessary. However, if an entity concludes otherwise, then the quantitative impairment test shall be used to identify the impairment and measure the amount of an impairment loss to be recognized (if applicable). The Company performs an annual impairment test of its indefinite-lived intangible assets as of July 1 of each fiscal year, unless events occur which trigger the need for an earlier impairment test. The Company has the option to perform a qualitative assessment to determine if an impairment is more likely than not to have occurred. In the qualitative assessment, the Company must evaluate the totality of qualitative factors, including any recent fair value measurements, that impact whether an indefinite-lived intangible asset other than goodwill has a carrying amount that more likely than not exceeds its fair value. The Company must proceed to conduct a quantitative analysis if the Company (i) determines that such an impairment is more likely than not to exist or (ii) forgoes the qualitative assessment entirely. The impairment tests require management to make assumptions about future conditions impacting the value of the indefinite-lived intangible assets, including projected growth rates, cost of capital, effective tax rates, tax amortization periods, royalty rates, market share and others. Valuation of Long-Lived Assets The Company periodically reviews the carrying value of its long-lived assets, including finite-lived intangibles, property, plant and equipment and amortizable intangible assets, whenever events or changes in circumstances indicate that the carrying value may not be recoverable or that the lives assigned may no longer be appropriate. To the extent the estimated future cash inflows attributable to the asset, less estimated future cash outflows, are less than the carrying amount, an impairment loss is recognized in an amount equal to the difference between the carrying value of such asset and its fair value. Assets to be disposed of and for which there is a committed plan to dispose of the assets, whether through sale or abandonment, are reported at the lower of carrying value or fair value less costs to sell. If it is determined that events and circumstances warrant a revision to the remaining period of amortization, an asset’s remaining useful life would be changed, and the remaining carrying amount of the asset would be amortized prospectively over that revised remaining useful life. Foreign Currency Translation The financial position and operating results of substantially all foreign operations are consolidated using the local currency as the functional currency. Local currency assets and liabilities are translated at the rates of exchange on the balance sheet date, and local currency revenues and expenses are translated at average rates of exchange during the period. Resulting translation gains or losses are included in the accompanying consolidated statements of (deficit) equity as a component of accumulated other comprehensive loss. Revenues Recorded Music As required by FASB ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”), the Company recognizes revenue when, or as, control of the promised services or goods is transferred to our customers and in an amount that reflects the consideration the Company is contractually due in exchange for those services or goods. The Company adopted ASC 606 as of October 1, 2018 using the modified retrospective method to all contracts not completed as of the date of adoption. Revenues from the sale or license of Recorded Music products through digital distribution channels are typically recognized when sale or usage occurs based on usage reports received from the customer. These licenses typically contain a single performance obligation, which is ongoing access to all intellectual property in an evolving content library, predicated on: (1) the business practice and contractual ability to remove specific content without a requirement to replace the content and without impact to minimum royalty guarantees and (2) the contracts not containing a specific listing of content subject to the license. For certain licenses where the consideration is fixed and the intellectual property being licensed is static, revenue is recognized at the point in time when control of the licensed content is transferred to the customer. Revenues from the sale of Recorded Music products through digital distribution channels are typically recognized when sale or usage occurs based on usage reports received from the customer. Certain contracts contain non-recoupable fixed fees or minimum guarantees, which are recoupable against royalties. Upon contract inception, the Company will assess whether a shortfall or breakage is expected (i.e., where the minimum guarantee will not be recouped through royalties) in order to determine timing of revenue recognition for the fixed fee or minimum guarantee. For fixed fee and minimum guarantee contracts where breakage is expected, the total transaction price (fixed fee or minimum guarantee) is typically recognized using an appropriate measure of progress over the contractual term. The Company updates its assessment of the transaction price each reporting period to see if anticipated royalty earnings exceed the minimum guarantee. For contracts where breakage is not expected, royalties are recognized as revenue as sales or usage occurs based upon the licensee’s usage reports and, when these reports are not available, revenue is based on historical data, industry information and other relevant trends. Music Publishing Music Publishing revenues are earned from the receipt of royalties relating to the licensing of rights in musical compositions and the sale of published sheet music and songbooks. The receipt of royalties principally relates to amounts earned from the public performance of musical compositions, the mechanical reproduction of musical compositions on recorded media including digital formats and the use of musical compositions in synchronization with visual images. Music publishing royalties, except for synchronization royalties, generally are recognized when the sale or usage occurs. The most common form of consideration for publishing contracts is sales- and usage-based royalties. The collecting societies submit usage reports, typically with payment for royalties due, often on a quarterly or biannual reporting period, in arrears. Royalties are recognized as the sale or usage occurs based upon usage reports and, when these reports are not available, royalties are estimated based on historical data, such as recent royalties reported, company-specific information with respect to changes in repertoire, industry information and other relevant trends. Synchronization revenue is typically recognized as revenue when control of the license is transferred to the customer in accordance with ASC 606. See also Note 4, Revenue Recognition. Royalty Costs and Royalty Advances The Company incurs royalty costs that are payable to our recording artists and songwriters generated from the sale or license of our Recorded Music catalog and Music Publishing copyrights. Royalties are calculated using negotiated rates in accordance with recording artist and songwriter contracts. Calculations are based on revenue earned or user/usage measures or a combination of these. There are instances where such data is not available to be processed and royalty cost calculations may be complex or involve judgments about significant volumes of data to be processed and analyzed. In many instances, the Company commits to pay our recording artists and songwriters royalties in advance of future sales. The Company accounts for these advances under the related guidance in FASB ASC Topic 928, Entertainment—Music (“ASC 928”). Under ASC 928, the Company capitalizes as assets certain advances that it believes are recoverable from future royalties to be earned by the recording artist or songwriter. Recoverability is assessed upon initial commitment of the advance based upon the Company’s forecast of anticipated revenue from the sale of future and existing albums or musical compositions. In determining whether the advance is recoverable, the Company evaluates the current and past popularity of the recording artist or songwriter, the sales history of the recording artist or songwriter, the initial or expected commercial acceptability of the product, the current and past popularity of the genre of music that the product is designed to appeal to, and other relevant factors. Advances vary in both amount and expected life based on the underlying recording artist or songwriter. To the extent that a portion of an outstanding advance is no longer deemed recoverable, that amount will be expensed in the period the determination is made. Advertising As required by the FASB ASC Subtopic 720-35, Advertising Costs (“ASC 720-35”), advertising costs, including costs to produce music videos used for promotional purposes, are expensed as incurred. Advertising expense amounted to approximately $115 million, $108 million and $104 million for the fiscal years ended September 30, 2020, September 30, 2019 and September 30, 2018, respectively. Deferred advertising costs, which principally relate to advertisements that have been paid for but not been exhibited or services that have not been received, were not material for all periods presented. Stock-Based Compensation The Company accounts for stock-based payments as required by ASC 718, Compensation—Stock Compensation (“ASC 718”). Under the recognition provision of ASC 718, the Company’s liability classified stock-based compensation costs are measured each reporting date until settlement. In February 2020, the Company filed a Form S-1 registration statement with the SEC in connection with the IPO, which required a change in accounting policy during the three months ended March 31, 2020 from the intrinsic value method to fair value method in determining the basis of measurement of its stock-based compensation liability. In determining fair value, the Company utilized an option pricing model for those awards with an option-like pay-off, which includes various inputs for volatility, term to exit, discount for lack of marketability, expected dividend yield and risk-free rates. For awards with an equity-like pay-off, inputs for discount of lack of marketability and non-performance risk were considered. The Company continued to use an income approach using a discounted cash flow model to determine its per-share value input within the model. As a result of this change in accounting policy, the Company recorded a decrease to its stock-based compensation liability of $38 million as of March 31, 2020, which resulted in a decrease of $33 million, net of tax, to accumulated deficit for the fiscal year ended September 30, 2020. Upon completion of the IPO in June 2020, the Senior Management Free Cash Flow Plan (the “Plan”) was amended to remove the cash-settlement feature on all future redemptions. As a result, all awards previously issued under the Plan will require settlement in Class A Common Stock. The participants in such plan were also allowed to sell a pro rata portion, consistent with Access’s percentage reduction in shares of Class B Common Stock as a result of the IPO, of their vested profits interests and acquired units of the LLC holding company, Management LLC, in the IPO through a “tag-along right.” Under the provision of ASC 718, the Company determined the Plan was modified as of June 3, 2020, and as such, converted the awards from liability-classified to equity-classified. Prior to conversion, the Company performed a final measurement of its stock-based compensation liability under the fair value method. The final measurement utilized the IPO listing price of $25 per share as the per-share value input within its fair value model. Upon modification of the Plan, the Company reclassified a $769 million stock-based compensation liability to additional paid-in capital, which included $57 million associated with the awards settled through the IPO tag-along right on June 5, 2020. In addition, the Company recognized approximately $11 million of stock-based compensation expense for the period of June 3, 2020 through September 30, 2020 for its unvested share awards that were granted prior to the IPO, which is included in additional paid-in capital. Income Taxes Income taxes are provided using the asset and liability method presented by FASB ASC Topic 740, Income Taxes (“ASC 740”). Under this method, income taxes (i.e., deferred tax assets, deferred tax liabilities, taxes currently payable/refunds receivable and tax expense) are recorded based on amounts refundable or payable in the current fiscal year and include the results of any differences between U.S. GAAP and tax reporting. Deferred income taxes reflect the tax effect of net operating loss, capital loss and general business credit carryforwards and the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial statements and income tax purposes, as determined under enacted tax laws and rates. Valuation allowances are established when management determines that it is more likely than not that some portion or the entire deferred tax asset will not be realized. The financial effect of changes in tax laws or rates is accounted for in the period of enactment. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the “Tax Act”). In accordance with ASC 740, the Company recorded the impacts in the period of enactment. From time to time, the Company engages in transactions in which the tax consequences may be subject to uncertainty. Significant judgment is required in assessing and estimating the tax consequences of these transactions. The Company prepares and files tax returns based on its interpretation of tax laws and regulations. In the normal course of business, the Company’s tax returns are subject to examination by various taxing authorities. Such examinations may result in future tax and interest assessments by these taxing authorities. In determining the Company’s tax provision for financial reporting purposes, the Company establishes a reserve for uncertain tax positions unless such positions are determined to be more likely than not of being sustained upon examination based on their technical merits. There is considerable judgment involved in determining whether positions taken on the Company’s tax returns are more likely than not of being sustained. New Accounting Pronouncements Recently Adopted Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, Leases (“ASU 2016-02”), which established a new ASC Topic 842 (“ASC 842”) that introduces a right-of-use (“ROU”) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases are classified as either finance or operating, with classification affecting the pattern of expense recognition in the statement of operations. In July 2018, the FASB issued ASU 2018-11, Leases – Targeted Improvements (“ASU 2018-11”), which allows for retrospective application with the recognition of a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. Under this option, entities do not need to apply ASC 842 (along with its disclosure requirements) to the comparative prior periods presented. The Company adopted ASU 2016-02 on October 1, 2019, using the modified retrospective transition method provided by ASU 2018-11. The adoption of ASU 2016-02 resulted in the recognition of operating lease liabilities of $366 million and ROU assets of $297 million, which is net of the historical deferred rent liability balance of $69 million, primarily related to real estate leases. The Company also recorded a decrease to opening accumulated deficit of $7 million, net of taxes, related to previously deferred gains related to sale-leaseback transactions. Upon transition, the Company adopted the “package of three” practical expedient provided by ASC 842 and therefore has not (1) reassessed whether any expired or existing contracts are or contain a lease, (2) reassessed the lease classification for expired or existing leases and (3) reassessed initial direct costs for any existing leases. Rather, the Company will retain the conclusions reached for these items under ASC 840. In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities (“ASU 2017-12”). This ASU improves certain aspects of the hedge accounting model including making more risk management strategies eligible for hedge accounting and simplifying the assessment of hedge effectiveness. ASU 2017-12 is effective for all annual periods beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted and requires a prospective adoption with a cumulative-effect adjustment to accumulated deficit as of the beginning of the fiscal year of adoption for existing hedging relationships. The Company adopted ASU 2017-12 in the first quarter of fiscal 2020 and this adoption did not have a significant impact on the Company’s financial statements. Accounting Pronouncements Not Yet Adopted In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses: Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). ASU 2016-13 requires that expected credit losses relating to financial assets measured on an amortized cost basis and available-for-sale debt securities be recorded through an allowance for credit losses. ASU 2016-13 limits the amount of credit losses to be recognized for available-for-sale debt securities to the amount by which carrying value exceeds fair value and also requires the reversal of previously recognized credit losses if fair value increases. ASU 2016-13 will be effective for annual periods beginning after December 15, 2019, and interim periods within those fiscal years. The Company will adopt ASU 2016-13 beginning October 1, 2020 and this adoption is not expected to have a material impact on the Company’s financial statements. In December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes (“ASU 2019-12”). This ASU eliminates certain exceptions to the general principles in ASC 740, Income Taxes. Specifically, it eliminates the exception to (1) the incremental approach for intraperiod tax allocation when there is a loss from continuing operations, and income or a gain from other items; (2) the requirement to recognize a deferred tax liability for equity method investments when a foreign subsidiary becomes an equity method investment; (3) the ability not to recognize a deferred tax liability for a foreign subsidiary when a foreign equity method investment becomes a subsidiary; and (4) the general methodology for calculating income taxes in an interim period when a year-to-date loss exceeds the anticipated loss for the year. ASU 2019-12 also simplifies U.S. GAAP by making other changes. ASU 2019-12 will be effective for the annual periods beginning after December 15, 2021, and for interim periods beginning after December 15, 2022. Earlier adoption is permitted. The Company is evaluating the impact of the adoption of this standard on its consolidated financial statements.

The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included.

The Company maintains a 52-53 week fiscal year ending on the last Friday in each reporting period. The fiscal year ended September 30, 2020 ended on September 25, 2020, the fiscal year ended September 30, 2019 ended on September 27, 2019 and the fiscal year ended September 30, 2018 ended on September 28, 2018. For convenience purposes, the Company continues to date its financial statements as of September 30.

The accompanying financial statements present the consolidated accounts of all entities in which the Company has a controlling voting interest and/or variable interest required to be consolidated in accordance with U.S. GAAP. All intercompany balances and transactions have been eliminated.

Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 810, Consolidation (“ASC 810”) requires the Company first evaluate its investments to determine if any investments qualify as a variable interest entity (“VIE”). A VIE is consolidated if the Company is deemed to be the primary beneficiary of the VIE, which is the party involved with the VIE that has both (i) the power to control the most significant activities of the VIE and (ii) either the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. If an entity is not deemed to be a VIE, the Company consolidates the entity if the Company has a controlling voting interest.

On February 28, 2020, the Company amended its certificate of incorporation to increase its authorized capital stock to 2,100,000,000 shares, consisting of 1,000,000,000 shares of Class A Common Stock, 1,000,000,000 shares of Class B Common Stock, and 100,000,000 shares of preferred stock, par value $1.00 per share. In addition, the February 28, 2020 amendment to the Company’s certificate of incorporation also gave effect to the reclassification and 477,242.614671815-for-1 stock split of the Company’s existing common stock outstanding into 510,000,000 shares of Class B Common Stock. This stock split has been retrospectively presented throughout the financial statements. Upon completion of the IPO and the exercise in full of the underwriters’ option to purchase additional shares, 88,550,000 shares of Class A Common Stock, 421,450,000 shares of Class B Common Stock and no shares of preferred stock were outstanding. The Company has also issued 28,361 shares under the Warner Music Group Corp. 2020 Omnibus Incentive Plan as of September 30, 2020. See Note 13, Stock-Based Compensation Plans.

The consolidated statements of operations present basic and diluted earnings per share (“EPS”). Prior to the completion of the IPO, basic and diluted earnings (loss) per share were computed by dividing net income (loss) available to common stockholders by the weighted average number of outstanding common shares less shares issued for the exercise of the deferred equity units since these units were mandatorily redeemable in cash. As such, the deferred equity units were excluded from the denominator of the basic and diluted EPS calculation prior to the IPO completion.

Subsequent to the completion of the IPO, the Company utilizes the two-class method to report earnings (loss) per share. The two-class method is an earnings (loss) allocation formula that determines earnings (loss) per share for each class of common stock according to dividends declared and participation rights in undistributed earnings (losses). Undistributed earnings allocated to participating securities are subtracted from net income in determining net income attributable to common stockholders. Since there was a loss for the fiscal year ended September 30, 2020, no earnings were allocated to our participating securities or our post-modification deferred equity units that are no longer mandatorily redeemable in cash after the IPO. See also Note 3, Earnings Per Share.

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and the accompanying notes. Actual results could differ from those estimates.

The Company accounts for its business acquisitions under the FASB ASC Topic 805, Business Combinations (“ASC 805”) guidance for business combinations. The total cost of acquisitions is allocated to the underlying identifiable net assets based on their respective estimated fair values. The excess of the purchase price over the estimated fair values of the net assets acquired is recorded as goodwill. Determining the fair value of assets acquired and liabilities assumed requires management’s judgment and often involves the use of significant estimates and assumptions, including assumptions with respect to future cash inflows and outflows, discount rates, asset lives and market multiples, among other items.

The Company considers all highly liquid investments with maturities of three months or less at the date of purchase to be cash equivalents. The Company includes checks outstanding at year end as a component of accounts payable, instead of a reduction in its cash balance where there is not a right of offset in the related bank accounts.

Management’s estimate of Recorded Music physical products that will be returned, and the amount of receivables that will ultimately be collected is an area of judgment affecting reported revenues and operating income. In determining the estimate of physical product sales that will be returned, management analyzes vendor sales of product, historical return trends, current economic conditions, changes in customer demand and commercial acceptance of the Company’s products. Based on this information, management reserves a percentage of each dollar of physical product sales that provide the customer with the right of return. The provision for such sales returns is reflected as a reduction in the revenues from the related sale.

Similarly, the Company monitors customer credit risk related to accounts receivable. Significant judgments and estimates are involved in evaluating if such amounts will ultimately be fully collected. On an ongoing basis, the Company tracks customer exposure based on news reports, ratings agency information, reviews of customer financial data and direct dialogue with customers. Counterparties that are determined to be of a higher risk are evaluated to assess whether the payment terms previously granted to them should be modified. The Company also monitors payment levels from customers, and a provision for estimated uncollectible amounts is maintained based on such payment levels, historical experience, management’s views on trends in the overall receivable agings and, for larger accounts, analyses of specific risks on a customer-specific basis.

Customer credit risk represents the potential for financial loss if a customer is unwilling or unable to meet its agreed upon contractual payment obligations. As of September 30, 2020 and September 30, 2019, Spotify represented 16% and 13%, respectively, of the Company’s accounts receivable balance. No other single customer accounted for more than 10% of accounts receivable in either period. The Company, by policy, routinely assesses the financial strength of its customers. As such, the Company does not believe there is any significant collection risk.

In the Music Publishing business, the Company collects a significant portion of its royalties from copyright collecting societies around the world. Collecting societies and associations generally are not-for-profit organizations that represent composers, songwriters and music publishers. These organizations seek to protect the rights of their members by licensing, collecting license fees and distributing royalties for the use of the members’ works. Accordingly, the Company does not believe there is any significant collection risk from such societies.

Inventories consist of merchandise, vinyl, CDs, DVDs and other related music products. Inventories are stated at the lower of cost or estimated realizable value. Cost is determined using first-in, first-out (“FIFO”) and average cost methods, which approximate cost under the FIFO method. Returned goods included in inventory are valued at estimated realizable value, but not in excess of cost.

The Company accounts for these investments as required by the FASB ASC Topic 815, Derivatives and Hedging (“ASC 815”), which requires that all derivative instruments be recognized on the balance sheet at fair value. ASC 815 also provides that, for derivative instruments that qualify for hedge accounting, changes in the fair value are either (a) offset against the change in fair value of the hedged assets, liabilities or firm commitments through earnings or (b) recognized in equity until the hedged item is recognized in earnings, depending on whether the derivative is being used to hedge changes in fair value or cash flows. In addition, the ineffective portion of a derivative’s change in fair value is immediately recognized in earnings.

The carrying value of the Company’s financial instruments approximates fair value, except for certain differences relating to long-term, fixed-rate debt (see Note 19) and other financial instruments that are not significant. The fair value of financial instruments is generally determined by reference to market values resulting from trading on a national securities exchange or an over-the-counter market. In cases where quoted market prices are not available, fair value is based on estimates using present value or other valuation techniques.

Property, plant and equipment acquired in conjunction with business combinations are recorded at fair value. All other additions are recorded at historical cost. Depreciation is calculated using the straight-line method based upon the estimated useful lives of depreciable assets commencing at the date assets are placed in service as follows: five to seven years for furniture and fixtures, periods of up to five years for computer equipment and software and periods of up to thirteen years for machinery and equipment. Buildings are depreciated over periods of up to forty years. Leasehold improvements are depreciated over the life of the lease or estimated useful lives of the improvements, whichever period is shorter.

The Company accounts for costs incurred to develop or purchase computer software for internal use in accordance with FASB ASC Subtopic 350-40, Internal-Use Software (“ASC 350-40”). As required by ASC 350-40, the Company capitalizes the costs incurred during the application development stage, which include costs to design the software configuration and interfaces, coding, installation, and testing.

In accordance with FASB ASC Topic 350, Intangibles—Goodwill and Other (“ASC 350”), the Company accounts for business combinations using the acquisition method of accounting and accordingly, the assets and liabilities of the acquired entities are recorded at their estimated fair values at the acquisition date. Goodwill represents the excess of the purchase price over the fair value of net assets, including the amount assigned to identifiable intangible assets. Pursuant to this guidance, the Company does not amortize the goodwill balance and instead, performs an annual impairment test to assess the fair value of goodwill over its carrying value. Identifiable intangible assets with finite lives are amortized over their useful lives.

Goodwill is tested annually for impairment on July 1 and at any time upon occurrence of certain events or changes in circumstances. ASC 350 gives an entity the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit or intangible asset is less than its carrying amount. If an entity determines it is not more likely than not that the fair value of a reporting unit or intangible asset is less than its carrying amount, then performing the quantitative impairment test is unnecessary. However, if an entity concludes otherwise, then the quantitative impairment test shall be used to identify the impairment and measure the amount of an impairment loss to be recognized (if applicable).

The Company performs an annual impairment test of its indefinite-lived intangible assets as of July 1 of each fiscal year, unless events occur which trigger the need for an earlier impairment test. The Company has the option to perform a qualitative assessment to determine if an impairment is more likely than not to have occurred. In the qualitative assessment, the Company must evaluate the totality of qualitative factors, including any recent fair value measurements, that impact whether an indefinite-lived intangible asset other than goodwill has a carrying amount that more likely than not exceeds its fair value. The Company must proceed to conduct a quantitative analysis if the Company (i) determines that such an impairment is more likely than not to exist or (ii) forgoes the qualitative assessment entirely.

The Company periodically reviews the carrying value of its long-lived assets, including finite-lived intangibles, property, plant and equipment and amortizable intangible assets, whenever events or changes in circumstances indicate that the carrying value may not be recoverable or that the lives assigned may no longer be appropriate. To the extent the estimated future cash inflows attributable to the asset, less estimated future cash outflows, are less than the carrying amount, an impairment loss is recognized in an amount equal to the difference between the carrying value of such asset and its fair value. Assets to be disposed of and for which there is a committed plan to dispose of the assets, whether through sale or abandonment, are reported at the lower of carrying value or fair value less costs to sell. If it is determined that events and circumstances warrant a revision to the remaining period of amortization, an asset’s remaining useful life would be changed, and the remaining carrying amount of the asset would be amortized prospectively over that revised remaining useful life.

The financial position and operating results of substantially all foreign operations are consolidated using the local currency as the functional currency. Local currency assets and liabilities are translated at the rates of exchange on the balance sheet date, and local currency revenues and expenses are translated at average rates of exchange during the period. Resulting translation gains or losses are included in the accompanying consolidated statements of (deficit) equity as a component of accumulated other comprehensive loss.

As required by FASB ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”), the Company recognizes revenue when, or as, control of the promised services or goods is transferred to our customers and in an amount that reflects the consideration the Company is contractually due in exchange for those services or goods. The Company adopted ASC 606 as of October 1, 2018 using the modified retrospective method to all contracts not completed as of the date of adoption.

Revenues from the sale or license of Recorded Music products through digital distribution channels are typically recognized when sale or usage occurs based on usage reports received from the customer. These licenses typically contain a single performance obligation, which is ongoing access to all intellectual property in an evolving content library, predicated on: (1) the business practice and contractual ability to remove specific content without a requirement to replace the content and without impact to minimum royalty guarantees and (2) the contracts not containing a specific listing of content subject to the license. For certain licenses where the consideration is fixed and the intellectual property being licensed is static, revenue is recognized at the point in time when control of the licensed content is transferred to the customer.

Revenues from the sale of Recorded Music products through digital distribution channels are typically recognized when sale or usage occurs based on usage reports received from the customer. Certain contracts contain non-recoupable fixed fees or minimum guarantees, which are recoupable against royalties. Upon contract inception, the Company will assess whether a shortfall or breakage is expected (i.e., where the minimum guarantee will not be recouped through royalties) in order to determine timing of revenue recognition for the fixed fee or minimum guarantee.

For fixed fee and minimum guarantee contracts where breakage is expected, the total transaction price (fixed fee or minimum guarantee) is typically recognized using an appropriate measure of progress over the contractual term. The Company updates its assessment of the transaction price each reporting period to see if anticipated royalty earnings exceed the minimum guarantee. For contracts where breakage is not expected, royalties are recognized as revenue as sales or usage occurs based upon the licensee’s usage reports and, when these reports are not available, revenue is based on historical data, industry information and other relevant trends.

Music Publishing revenues are earned from the receipt of royalties relating to the licensing of rights in musical compositions and the sale of published sheet music and songbooks. The receipt of royalties principally relates to amounts earned from the public performance of musical compositions, the mechanical reproduction of musical compositions on recorded media including digital formats and the use of musical compositions in synchronization with visual images. Music publishing royalties, except for synchronization royalties, generally are recognized when the sale or usage occurs. The most common form of consideration for publishing contracts is sales- and usage-based royalties. The collecting societies submit usage reports, typically with payment for royalties due, often on a quarterly or biannual reporting period, in arrears. Royalties are recognized as the sale or usage occurs based upon usage reports and, when these reports are not available, royalties are estimated based on historical data, such as recent royalties reported, company-specific information with respect to changes in repertoire, industry information and other relevant trends. Synchronization revenue is typically recognized as revenue when control of the license is transferred to the customer in accordance with ASC 606. See also Note 4, Revenue Recognition.

The Company incurs royalty costs that are payable to our recording artists and songwriters generated from the sale or license of our Recorded Music catalog and Music Publishing copyrights. Royalties are calculated using negotiated rates in accordance with recording artist and songwriter contracts. Calculations are based on revenue earned or user/usage measures or a combination of these. There are instances where such data is not available to be processed and royalty cost calculations may be complex or involve judgments about significant volumes of data to be processed and analyzed.

In many instances, the Company commits to pay our recording artists and songwriters royalties in advance of future sales. The Company accounts for these advances under the related guidance in FASB ASC Topic 928, Entertainment—Music (“ASC 928”). Under ASC 928, the Company capitalizes as assets certain advances that it believes are recoverable from future royalties to be earned by the recording artist or songwriter. Recoverability is assessed upon initial commitment of the advance based upon the Company’s forecast of anticipated revenue from the sale of future and existing albums or musical compositions. In determining whether the advance is recoverable, the Company evaluates the current and past popularity of the recording artist or songwriter, the sales history of the recording artist or songwriter, the initial or expected commercial acceptability of the product, the current and past popularity of the genre of music that the product is designed to appeal to, and other relevant factors. Advances vary in both amount and expected life based on the underlying recording artist or songwriter. To the extent that a portion of an outstanding advance is no longer deemed recoverable, that amount will be expensed in the period the determination is made.

As required by the FASB ASC Subtopic 720-35, Advertising Costs (“ASC 720-35”), advertising costs, including costs to produce music videos used for promotional purposes, are expensed as incurred. Advertising expense amounted to approximately $115 million, $108 million and $104 million for the fiscal years ended September 30, 2020, September 30, 2019 and September 30, 2018, respectively. Deferred advertising costs, which principally relate to advertisements that have been paid for but not been exhibited or services that have not been received, were not material for all periods presented.

The Company accounts for stock-based payments as required by ASC 718, Compensation—Stock Compensation (“ASC 718”). Under the recognition provision of ASC 718, the Company’s liability classified stock-based compensation costs are measured each reporting date until settlement. In February 2020, the Company filed a Form S-1 registration statement with the SEC in connection with the IPO, which required a change in accounting policy during the three months ended March 31, 2020 from the intrinsic value method to fair value method in determining the basis of measurement of its stock-based compensation liability.

In determining fair value, the Company utilized an option pricing model for those awards with an option-like pay-off, which includes various inputs for volatility, term to exit, discount for lack of marketability, expected dividend yield and risk-free rates. For awards with an equity-like pay-off, inputs for discount of lack of marketability and non-performance risk were considered. The Company continued to use an income approach using a discounted cash flow model to determine its per-share value input within the model. As a result of this change in accounting policy, the Company recorded a decrease to its stock-based compensation liability of $38 million as of March 31, 2020, which resulted in a decrease of $33 million, net of tax, to accumulated deficit for the fiscal year ended September 30, 2020.

Upon completion of the IPO in June 2020, the Senior Management Free Cash Flow Plan (the “Plan”) was amended to remove the cash-settlement feature on all future redemptions. As a result, all awards previously issued under the Plan will require settlement in Class A Common Stock. The participants in such plan were also allowed to sell a pro rata portion, consistent with Access’s percentage reduction in shares of Class B Common Stock as a result of the IPO, of their vested profits interests and acquired units of the LLC holding company, Management LLC, in the IPO through a “tag-along right.”

Under the provision of ASC 718, the Company determined the Plan was modified as of June 3, 2020, and as such, converted the awards from liability-classified to equity-classified. Prior to conversion, the Company performed a final measurement of its stock-based compensation liability under the fair value method. The final measurement utilized the IPO listing price of $25 per share as the per-share value input within its fair value model. Upon modification of the Plan, the Company reclassified a $769 million stock-based compensation liability to additional paid-in capital, which included $57 million associated with the awards settled through the IPO tag-along right on June 5, 2020. In addition, the Company recognized approximately $11 million of stock-based compensation expense for the period of June 3, 2020 through September 30, 2020 for its unvested share awards that were granted prior to the IPO, which is included in additional paid-in capital.

Income taxes are provided using the asset and liability method presented by FASB ASC Topic 740, Income Taxes (“ASC 740”). Under this method, income taxes (i.e., deferred tax assets, deferred tax liabilities, taxes currently payable/refunds receivable and tax expense) are recorded based on amounts refundable or payable in the current fiscal year and include the results of any differences between U.S. GAAP and tax reporting. Deferred income taxes reflect the tax effect of net operating loss, capital loss and general business credit carryforwards and the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial statements and income tax purposes, as determined under enacted tax laws and rates. Valuation allowances are established when management determines that it is more likely than not that some portion or the entire deferred tax asset will not be realized. The financial effect of changes in tax laws or rates is accounted for in the period of enactment. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the “Tax Act”). In accordance with ASC 740, the Company recorded the impacts in the period of enactment.

From time to time, the Company engages in transactions in which the tax consequences may be subject to uncertainty. Significant judgment is required in assessing and estimating the tax consequences of these transactions. The Company prepares and files tax returns based on its interpretation of tax laws and regulations. In the normal course of business, the Company’s tax returns are subject to examination by various taxing authorities. Such examinations may result in future tax and interest assessments by these taxing authorities. In determining the Company’s tax provision for financial reporting purposes, the Company establishes a reserve for uncertain tax positions unless such positions are determined to be more likely than not of being sustained upon examination based on their technical merits. There is considerable judgment involved in determining whether positions taken on the Company’s tax returns are more likely than not of being sustained.

In February 2016, the FASB issued ASU 2016-02, Leases (“ASU 2016-02”), which established a new ASC Topic 842 (“ASC 842”) that introduces a right-of-use (“ROU”) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases are classified as either finance or operating, with classification affecting the pattern of expense recognition in the statement of operations. In July 2018, the FASB issued ASU 2018-11, Leases – Targeted Improvements (“ASU 2018-11”), which allows for retrospective application with the recognition of a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. Under this option, entities do not need to apply ASC 842 (along with its disclosure requirements) to the comparative prior periods presented. The Company adopted ASU 2016-02 on October 1, 2019, using the modified retrospective transition method provided by ASU 2018-11. The adoption of ASU 2016-02 resulted in the recognition of operating lease liabilities of $366 million and ROU assets of $297 million, which is net of the historical deferred rent liability balance of $69 million, primarily related to real estate leases. The Company also recorded a decrease to opening accumulated deficit of $7 million, net of taxes, related to previously deferred gains related to sale-leaseback transactions.

Upon transition, the Company adopted the “package of three” practical expedient provided by ASC 842 and therefore has not (1) reassessed whether any expired or existing contracts are or contain a lease, (2) reassessed the lease classification for expired or existing leases and (3) reassessed initial direct costs for any existing leases. Rather, the Company will retain the conclusions reached for these items under ASC 840.

In August 2017, the FASB issued ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities (“ASU 2017-12”). This ASU improves certain aspects of the hedge accounting model including making more risk management strategies eligible for hedge accounting and simplifying the assessment of hedge effectiveness. ASU 2017-12 is effective for all annual periods beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted and requires a prospective adoption with a cumulative-effect adjustment to accumulated deficit as of the beginning of the fiscal year of adoption for existing hedging relationships. The Company adopted ASU 2017-12 in the first quarter of fiscal 2020 and this adoption did not have a significant impact on the Company’s financial statements.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses: Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”). ASU 2016-13 requires that expected credit losses relating to financial assets measured on an amortized cost basis and available-for-sale debt securities be recorded through an allowance for credit losses. ASU 2016-13 limits the amount of credit losses to be recognized for available-for-sale debt securities to the amount by which carrying value exceeds fair value and also requires the reversal of previously recognized credit losses if fair value increases. ASU 2016-13 will be effective for annual periods beginning after December 15, 2019, and interim periods within those fiscal years. The Company will adopt ASU 2016-13 beginning October 1, 2020 and this adoption is not expected to have a material impact on the Company’s financial statements.