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Accrued interest Interest Payable, Current Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Trademarks and tradenames Trademarks and Trade Names [Member] Earnings per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Net income per share attributable to common stockholders: Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Acquisition Corp. long-term debt Secured Long-Term Debt, Noncurrent Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Redeemable Noncontrolling Interest [Table] Redeemable Noncontrolling Interest [Table] Total liabilities Liabilities Liabilities Trading Symbol Trading Symbol Impairment charges Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount Geographical Geographical [Domain] Capital expenditures Payments to Acquire Property, Plant, and Equipment Intangible assets not subject to amortization Trademarks and tradenames Intangible Asset, Excluding Goodwill, Indefinite-Lived Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Weighted average common shares: Denominator Weighted Average Number of Shares Outstanding, Basic [Abstract] Music publishing copyrights Music Publishing Copyrights [Member] Music publishing copyrights. 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Equity Shareholders' Equity and Share-Based Payments [Text Block] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Schedule of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name Debt Instrument, Name [Domain] Artist and songwriter contracts Artist And Songwriter Contracts [Member] Artist and songwriter contracts. Segment Information Segment Reporting [Text Block] Minimum Minimum [Member] Revolving credit facility outstanding Long-Term Line of Credit Expiration Date Trading Arrangement Expiration Date Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Other adjustments Goodwill, Other Increase (Decrease) Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Pre-tax realized net gain on sale of an investment Gain (Loss) On Sale Of Investments, Pretax Gain (Loss) On Sale Of Investments, Pretax Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] 2.250% Senior Secured Notes due 2031 Two Point Two Fifty Percent Senior Secured Notes Due In Two Thousand Thirty One [Member] Two Point Two Fifty Percent Senior Secured Notes Due In Two Thousand Thirty One Disposal Group, Including Discontinued Operations [Line Items] Disposal Group, Including Discontinued Operations [Line Items] Accounts payable and accrued liabilities Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Liabilities Dividends Dividends, Common Stock Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Shares authorized (in shares) Common Stock, Shares Authorized Basic and Diluted EPS: Earnings Per Share Reconciliation [Abstract] Weighted-Average Useful Life Intangible Asset, Finite-Lived, Useful Life Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Exercise Price Award Exercise Price Schedule of Restructuring and Related Costs [Table] Restructuring Cost [Table] Cash flows from investing activities 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Scenario [Axis] Scenario [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Deferred financing costs Debt Issuance Costs, Net Premium less unamortized discount and unamortized DFCs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Schedule of Restructuring Accrual Activity Restructuring and Related Costs [Table Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Beginning balance Ending balance Restructuring Reserve Equity Component Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Other current assets Foreign Currency Contract, Asset, Fair Value Disclosure Foreign Exchange Contract Foreign currency forward exchange contracts Foreign Exchange Contract [Member] Refund liabilities Contract with Customer, Refund Liability Total costs and expenses Costs and Expenses Adoption Date Trading Arrangement Adoption Date Credit Agreement Credit Agreement [Member] Credit Agreement Interest rate Debt Instrument, Interest Rate, Stated Percentage Total Warner Music Group Corp. equity Equity, Attributable to Parent Restructuring Type [Axis] Restructuring Type [Axis] Income taxes payable Increase (Decrease) in Accrued Taxes Payable Assets Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Business combination, shares issued (in shares) Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Acquisition of noncontrolling interests Noncontrolling Interest, Acquisition Of Noncontrolling Interest Noncontrolling Interest, Acquisition Of Noncontrolling Interest Insider Trading 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Liabilities of business held for sale Disposal Group, Including Discontinued Operation, Liabilities Other Stockholders' Equity, Other Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Ownership [Axis] Ownership [Axis] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Axis] Restructuring Plan [Domain] Restructuring Plan [Domain] Deferred tax assets, net Deferred Income Tax Assets, Net Intersegment eliminations Intersegment Eliminations [Member] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Schedule of Finite-Lived Intangible Assets Intangible Asset, Finite-Lived [Table Text Block] Effect of change in cash balances classified as assets held for sale Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Discontinued Operation Long term debt maturities repayments of principal in rolling after year five Long-Term Debt, Maturities, Repayments of Principal in Rolling after Year Five Strategic Business Strategic Business [Member] Strategic Business Debt instrument, marginal interest rate Debt Instrument, Basis Spread on Variable Rate City Area Code City Area Code Variable Rate Variable Rate [Domain] Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss, net AOCI Attributable to Parent [Member] Document Information [Table] Document Information [Table] All Individuals All Individuals [Member] Fair value of debt Debt Instrument, Fair Value Disclosure Dividends paid Dividends paid Payments of Dividends Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Statement [Line Items] Statement [Line Items] Total assets Assets Assets Beethoven Credit Agreement Beethoven Credit Agreement [Member] Beethoven Credit Agreement Entity Entity [Domain] Remeasurement of redeemable noncontrolling interest Remeasurement of Redeemable Noncontrolling Interest Remeasurement of Redeemable Noncontrolling Interest Finite Lived And Indefinite Lived Intangible Assets [Table] Finite Lived And Indefinite Lived Intangible Assets [Table] Finite lived and indefinite lived intangible assets. 2.750% Senior Secured Notes due 2028 Two Point Seven Fifty Percent Senior Secured Notes Due In Two Thousand Twenty Eight [Member] Two Point Seven Fifty Percent Senior Secured Notes Due In Two Thousand Twenty Eight Operating Segments Operating Segments [Member] Description of Business Nature of Operations [Text Block] Shares issued under the Plan (in shares) Stock Issued During Period, Shares, New Issues PEO PEO [Member] Severance And Other Termination Costs Severance And Other Termination Costs [Member] Severance And Other Termination Costs Common shares repurchased and retired (in shares) Stock Repurchased and Retired During Period, Shares Other Non-cash Charges Other Non-Cash Charges [Member] Other Non-Cash Charges Other noncurrent liabilities Other Liabilities, Noncurrent Goodwill Beginning balance Ending balance Goodwill Quarterly cash distributions from joint ventures, percentage Quarterly Cash Distributions, Joint Ventures, Percentage Quarterly Cash Distributions, Joint Ventures, Percentage Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Acquisitions Goodwill, Acquired During Period Revenue recognized related to deferred revenue Contract with Customer, Liability, Revenue Recognized Subsequent Event Type [Domain] Subsequent Event Type [Domain] Accumulated Deficit Retained Earnings [Member] Operating lease liabilities, noncurrent Operating Lease, Liability, Noncurrent Revolving Credit Facility Revolving Credit Facility [Member] Other long-term debt Other Long-Term Debt, Noncurrent Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Foreign Currency Translation Loss Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Deferred financing costs paid Payments of Debt Issuance Costs Diluted (in dollars per share) Earnings Per Share - Diluted (in dollars per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Schedule of Fair Value of Financial Instruments Fair Value, Liabilities Measured on Recurring Basis [Table Text Block] Amortization expense Amortization expense Intangible Asset, Finite-Lived, Amortization Expense Ownership [Domain] Ownership [Domain] Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Intangible assets, assets acquired Intangible Asset, Finite-Lived, Acquired Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Revenue Total revenues Revenues Revenue from Contract with Customer, Excluding Assessed Tax Property, plant and equipment, net of accumulated depreciation of $777 million and $701 million Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Unrealized foreign currency forward exchange contracts pre tax gains Unrealized Gain (Loss) on Fair Value Hedges Recognized in Earnings Unrealized Gain (Loss) on Fair Value Hedges Recognized in Earnings Inventories Disposal Group, Including Discontinued Operation, Inventory Contract Termination Costs Contract Termination [Member] Assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current Equity investment with readily determinable fair value Derivative Asset Numerator Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Intangible Asset, Finite-Lived, Class Intangible Asset, Finite-Lived, Class [Axis] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Goodwill and Intangible Assets Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount Less: (Income) loss attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Revenue Recognition Revenue from Contract with Customer [Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Other current liabilities Foreign Currency Contracts, Liability, Fair Value Disclosure Accrued interest Increase (Decrease) in Interest Payable, Net Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Acquisition consideration common shares issued (in shares) Stock Issued During Period, Shares, Acquisitions Inventories Increase (Decrease) in Inventories Segment Reporting [Table] Segment Reporting [Table] Digital Digital [Member] Digital. Net income Net loss Temporary Equity, Net Income Weighted-average interest rate of total debt Long-Term Debt, Weighted Average Interest Rate, at Point in Time Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Royalty advances Increase (Decrease) in Prepaid Royalties Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income Operating income (loss) Operating Income (Loss) Remaining performance obligations Revenue, Remaining Performance Obligation, Amount Current Fiscal Year End Date Current Fiscal Year End Date Net loss on divestitures Net loss on divestitures Net loss on divestitures Net loss on divestitures Gain (Loss) on Disposition of Business Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Remeasurement of share-settled liability Remeasurement Of Share-Settled Liability Remeasurement Of Share-Settled Liability Pre-tax basis Restructuring and Related Cost, Expected Cost Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Dividends (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Equity investments with readily determinable fair value Equity Securities [Member] Distribution to noncontrolling interest holders Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Non-cash impairments Asset, Impairment Loss Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Accrued royalties Accrued Royalties, Current Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Equity Components Equity Components [Axis] Accounts receivable, net Increase (Decrease) in Accounts Receivable Product and Service Product and Service [Domain] Income and withholding taxes paid Income Tax Paid, after Refund Received Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Class A Common Stock Common Class A [Member] Entity Interactive Data Current Entity Interactive Data Current Variable Rate Variable Rate [Axis] Less: (Income) loss attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Deferred tax liabilities, net Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Remeasurement of redeemable noncontrolling interest Remeasurement of redeemable noncontrolling interest Noncontrolling Interest, Change in Redemption Value Entity Small Business Entity Small Business Comprehensive income attributable to Warner Music Group Corp. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date Asset-Based Class B Notes Asset-Based Class B Notes [Member] Asset-Based Class B Notes Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Vesting of restricted stock units, net of shares withheld for employee taxes Restricted Stock, Value, Shares Issued Net of Tax Withholdings MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other current liabilities Other Liabilities, Current Other assets Other Assets, Noncurrent Document Type Document Type Investments and acquisitions of businesses, net of cash received Payments to Acquire Businesses, Net of Cash Acquired Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Loss on extinguishment of debt Loss on extinguishment of debt Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Accrued liabilities Accrued Liabilities, Current Other impairments charges Impairment expense Other Asset Impairment Charges Fair Value as of Grant Date Award Grant Date Fair Value Sale Short [Member] Schedule of Indefinite Intangible Assets Intangible Asset, Indefinite-Lived [Table Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Operating lease liabilities Increase (Decrease) In Operating Lease Liabilities Increase (Decrease) In Operating Lease Liabilities Schedule of Goodwill [Table] Goodwill [Table] Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Beethoven JV Credit Agreement Beethoven JV Credit Agreement [Member] Beethoven JV Credit Agreement Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] After-tax basis Restructuring and Related Cost, Expected Cost, Net of Tax Restructuring and Related Cost, Expected Cost, Net of Tax Arrangement Duration Trading Arrangement Duration Realized foreign currency forward exchange contracts pre-tax (losses) gains Realized Gain (Loss) on Fair Value Hedges Recognized in Earnings Realized Gain (Loss) on Fair Value Hedges Recognized in Earnings 2025 Restructuring Plan 2025 Restructuring Plan [Member] 2025 Restructuring Plan Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Additional Financial Information Additional Financial Information Disclosure [Text Block] Consolidation Items Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Total gross intangible assets subject to amortization Intangible Asset, Finite-Lived, before Accumulated Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Performance Performance [Member] Performance. Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Noncontrolling Interests Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block] Executive Category: Executive Category [Axis] Goodwill [Roll Forward] Goodwill [Roll Forward] Liabilities, Redeemable Noncontrolling Interest and Equity Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class Intangible Asset, Finite-Lived, Class [Domain] Inventories Inventory, Net All Award Types Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Fair Value Measurements Fair Value Disclosures [Text Block] (Level 3) Fair Value, Inputs, Level 3 [Member] Schedule of Variable Interest Entities [Table] Variable Interest Entity [Table] Number of shares repurchased (in shares) Treasury Stock, Shares, Acquired Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Noncontrolling percentage Subsidiary, Ownership Percentage, Noncontrolling Owner PEO Name PEO Name Term Loan Facility Term Loan Facility [Member] Term Loan Facility Geographical Geographical [Axis] Payment of deferred consideration Payment for Contingent Consideration Liability, Financing Activities Term loan base rate plus election rate Team Loan Borrower Alternate Base Rate Election Rate Team loan borrower alternate base rate election rate. Repayments of secured debt Repayments of Secured Debt Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Legal Entity Legal Entity [Axis] Interest expense, debt Interest Expense, Debt Vesting of restricted stock units, net of shares withheld for employee taxes (in shares) Restricted Stock, Shares Issued Net of Shares for Tax Withholdings Amount Treasury Stock, Value, Acquired, Cost Method Payment for restructuring Cash payments Payments for Restructuring Cash and equivalents at beginning of period Cash and equivalents at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Consideration for sale of music catalog rights Disposal Group, Including Discontinued Operation, Consideration, Intangible Assets Disposal Group, Including Discontinued Operation, Consideration, Intangible Assets Base Rate Base Rate [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Tempo Asset-Based Notes due 2050 Tempo Asset-Based Notes Due 2050 [Member] Asset-Based Notes Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Total comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument Debt Instrument [Axis] Non-cash stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Senior Term Loan Facility Senior Term Loan Facility [Member] Senior Term Loan Facility Purchase Long [Member] Mechanical Mechanical [Member] Mechanical. Long-term Debt, Type Long-Term Debt, Type [Domain] Schedule of Amounts Recorded in Consolidated Balance Sheets Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic (in dollars per share) Earnings Per Share - Basic (in dollars per share) Earnings Per Share, Basic Remeasurement of redeemable noncontrolling interest Net loss attributions Temporary Equity, Accretion to Redemption Value Common stock repurchased and retired Payments for Repurchase of Common Stock Deferred revenue Contract with Customer, Liability, Current Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Senior Term Loan B Facility due 2031 Senior Term Loan Facility B Due In Two Thousand And Thirty One [Member] Senior Term Loan Facility B Due In Two Thousand And Thirty One Insider Trading Arrangements [Line Items] 3.750% Senior Secured Notes due 2029 Three Point Seven Fifty Percent Senior Secured Notes Due In Two Thousand Twenty Nine [Member] Three Point Seven Fifty Percent Senior Secured Notes Due In Two Thousand Twenty Nine Asset-Based Class A Notes Asset-Based Class A Notes [Member] Asset-Based Class A Notes Cost of revenue Cost of Revenue Award Type Award Type [Axis] Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net of allowances of $27 million and $27 million Accounts Receivable, after Allowance for Credit Loss, Current Schedule of Share Repurchased under Share Repurchase Program Class of Treasury Stock [Table Text Block] Accumulated deficit Retained Earnings (Accumulated Deficit) Restructuring and Related Activities [Abstract] Product and Service Product and Service [Axis] Royalty advances expected to be recouped within one year Advance Royalties, Current Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Beginning balance Ending balance Temporary Equity, Including Noncontrolling Interest Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Proceeds from Senior Term Loan A Facility Proceeds from Issuance of Secured Debt Royalty advances expected to be recouped after one year Advance Royalties, Noncurrent Severance Costs Employee Severance [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] International Non-US [Member] Noncontrolling Interest [Abstract] Derivative Contract Derivative Contract [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Property Wind Down Property Wind Down [Member] Property Wind Down Total liabilities, redeemable noncontrolling interest and equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Noncontrolling interest Equity, Attributable to Noncontrolling Interest Segments Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Restructuring charges Restructuring Charges 3.000% Senior Secured Notes due 2031 Three Point Zero Zero Zero Percent Senior Secured Notes Due In Two Thousand Thirty One [Member] Three Point Zero Zero Zero Percent Senior Secured Notes Due In Two Thousand Thirty One Tabular List, Table Tabular List [Table Text Block] Acquisition of music publishing rights and music catalogs Payments to Acquire Intangible Assets Other income (expense) Other expense, net Other Nonoperating Income (Expense) Deferred revenue increased related to cash received from customers Change In Contract With Customer Liability Change in contract with customer liability. Total Warner Music Group Corp. Equity Parent [Member] Name Awards Close in Time to MNPI Disclosures, Individual Name Cash expenditures Restructuring and Related Cost, Expected Cash Expenditures Restructuring and Related Cost, Expected Cash Expenditures Equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Tempo Tempo [Member] Tempo Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] General and administrative expense General and Administrative Expense Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Initial Revolving Loans Initial Revolving Loans [Member] Initial Revolving Loans Adjustment to Compensation: Adjustment to Compensation [Axis] Less: Net loss (income) attributable to shares to be issued on redemption of noncontrolling interests Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Share Repurchase Program [Axis] Share Repurchase Program [Axis] Mortgage Term Loan due 2033 Term Loan Mortgage [Member] Term Loan Mortgage Dividends Payable [Line Items] Dividends Payable [Line Items] Dividends Payable [Table] Dividends Payable [Table] Class of Stock [Domain] Class of Stock [Domain] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest payments Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Foreign currency forward exchange contracts Foreign Exchange Forward [Member] Less: Net loss (income) attributable to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Redemption of noncontrolling interests Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Distribution expense Distribution Expense Distribution Expense Credit Facility Credit Facility [Axis] Restructuring and Impairments Restructuring and Related Activities Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Finite Lived And Indefinite Lived Intangible Assets [Line Items] Finite Lived And Indefinite Lived Intangible Assets [Line Items] Finite lived and indefinite lived intangible assets. Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Proceeds from sale of music catalog rights Proceeds from Sale of Intangible Assets Indefinite-lived Intangible Assets Intangible Asset, Indefinite-Lived, Class [Axis] Music Publishing Music Publishing Music Publishing [Member] Music publishing. Name Trading Arrangement, Individual Name Cash and equivalents Cash and Cash Equivalent Position Position [Domain] Foreign currency movements Restructuring Reserve, Foreign Currency Translation Gain (Loss) Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization Depreciation, Depletion and Amortization Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Shares issued under omnibus incentive plan (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Current assets: Assets, Current [Abstract] Interest rate cap Interest Rate Cap [Member] Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax expense Income tax expense Income Tax Expense (Benefit) Unrealized losses and remeasurement of foreign-denominated loans and foreign currency forward exchange contracts Gain (Loss), Foreign Currency Transaction, before Tax Cost of revenue Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Basis of Consolidation Consolidation, Policy [Policy Text Block] Net increase (decrease) in cash and equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Net income (loss) attributable to Warner Music Group Corp. Net income (loss) attributable to Warner Music Group Corp. Net Income (Loss) Attributable to Parent Omnibus Incentive Plan Omnibus Incentive Plan [Member] Omnibus Incentive Plan Long-term Debt, Type Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Recorded music catalog Recorded Music Catalog [Member] Recorded music catalog. Schedule of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Revenues Expected to be Recognized in Future Related to Performance Obligations Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Federal Funds Effective Swap Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Foreign exchange derivative contracts in asset Derivative Asset, Subject to Master Netting Arrangement, before Offset Other liabilities Disposal Group, Including Discontinued Operation, Other Liabilities Unamortized discount and unamortized DFCs Debt Instrument, Fair Value Adjustment Debt Instrument, Fair Value Adjustment Physical Physical [Member] Physical. Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]