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| | | <ParentRole> http://www.wmg.com/20160930/taxonomy/role/DisclosureShareBasedCompensationPlans </ParentRole> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <MenuCategory> Tables </MenuCategory> |
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| | | <ReportType> Sheet </ReportType> |
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| | | <MenuCategory> Tables </MenuCategory> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R40.htm </HtmlFileName> |
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| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosureFairValueMeasurementsTables </Role> |
| | | <ShortName> Fair Value Measurements (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.wmg.com/20160930/taxonomy/role/DisclosureFairValueMeasurements </ParentRole> |
| | | <Position> 40 </Position> |
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| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R41.htm </HtmlFileName> |
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| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Quarterly Financial Information (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.wmg.com/20160930/taxonomy/role/DisclosureQuarterlyFinancialInformation </ParentRole> |
| | | <Position> 41 </Position> |
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| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R42.htm </HtmlFileName> |
| | | <LongName> 100410 - Disclosure - Guarantor and Non-Guarantor Subsidiaries Financial Information (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Guarantor and Non-Guarantor Subsidiaries Financial Information (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.wmg.com/20160930/taxonomy/role/DisclosureGuarantorAndNonGuarantorSubsidiariesFinancialInformation </ParentRole> |
| | | <Position> 42 </Position> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Description of Business - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 43 </Position> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetail </Role> |
| | | <ShortName> Summary of Significant Accounting Policies - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 44 </Position> |
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| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <LongName> 100440 - Disclosure - Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Loss (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Loss (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.wmg.com/20160930/taxonomy/role/DisclosureComprehensiveIncomeLossTables </ParentRole> |
| | | <Position> 45 </Position> |
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| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Loss (Parenthetical) (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R47.htm </HtmlFileName> |
| | | <LongName> 100460 - Disclosure - Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosurePropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentDetail </Role> |
| | | <ShortName> Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 47 </Position> |
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| | | <ShortName> Property, Plant and Equipment - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 48 </Position> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R49.htm </HtmlFileName> |
| | | <LongName> 100480 - Disclosure - Goodwill and Intangible Assets - Changes in Goodwill for Each Reportable Segment (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Goodwill and Intangible Assets - Changes in Goodwill for Each Reportable Segment (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 49 </Position> |
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| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Goodwill and Intangible Assets - Schedule of Intangible Assets (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
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| | | <ShortName> Goodwill and Intangible Assets - Expected Amortization of Intangible Assets (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R52.htm </HtmlFileName> |
| | | <LongName> 100510 - Disclosure - Debt - Long-term Debt (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Debt - Long-term Debt (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 52 </Position> |
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| | | <IsDefault> false </IsDefault> |
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| | | <LongName> 100520 - Disclosure - Debt - Long-term Debt (Parenthetical) (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Debt - Long-term Debt (Parenthetical) (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <LongName> 100530 - Disclosure - Debt - Debt Redemptions - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Debt - Debt Redemptions - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 54 </Position> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R55.htm </HtmlFileName> |
| | | <LongName> 100540 - Disclosure - Debt - Open Market Purchases - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Debt - Open Market Purchases - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
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| | | <HtmlFileName> R56.htm </HtmlFileName> |
| | | <LongName> 100550 - Disclosure - Debt - Notes Offering - Additional Information (Detail) </LongName> |
| | | <ReportType> Notes </ReportType> |
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| | | <ShortName> Debt - Notes Offering - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
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| | | <HtmlFileName> R57.htm </HtmlFileName> |
| | | <LongName> 100560 - Disclosure - Debt - 2014 Debt Refinancing - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Debt - 2014 Debt Refinancing - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
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| | | <LongName> 100570 - Disclosure - Debt - Interest Rates - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosureDebtInterestRatesAdditionalInformationDetail </Role> |
| | | <ShortName> Debt - Interest Rates - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 58 </Position> |
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| | | <ShortName> Debt - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R60.htm </HtmlFileName> |
| | | <LongName> 100590 - Disclosure - Income Taxes - Schedule of Domestic and Foreign Pretax (Loss) Income from Continuing Operations (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosureIncomeTaxesScheduleOfDomesticAndForeignPretaxLossIncomeFromContinuingOperationsDetail </Role> |
| | | <ShortName> Income Taxes - Schedule of Domestic and Foreign Pretax (Loss) Income from Continuing Operations (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 60 </Position> |
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| | | <HtmlFileName> R61.htm </HtmlFileName> |
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| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Income Taxes - Current and Deferred Income Taxes (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 61 </Position> |
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| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Income Taxes - Current and Deferred Income Taxes (Parenthetical) (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 62 </Position> |
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| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Income Taxes - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 63 </Position> |
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| | | <HtmlFileName> R64.htm </HtmlFileName> |
| | | <LongName> 100630 - Disclosure - Income Taxes - Differences between U.S. Federal Statutory Income Tax Rate of 35% and Income Taxes Provided (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosureIncomeTaxesDifferencesBetweenUSFederalStatutoryIncomeTaxRateOf35AndIncomeTaxesProvidedDetail </Role> |
| | | <ShortName> Income Taxes - Differences between U.S. Federal Statutory Income Tax Rate of 35% and Income Taxes Provided (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 64 </Position> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R65.htm </HtmlFileName> |
| | | <LongName> 100640 - Disclosure - Income Taxes - Significant Components of Company's Net Deferred Tax Assets/(Liabilities) (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosureIncomeTaxesSignificantComponentsOfCompanySNetDeferredTaxAssetsLiabilitiesDetail </Role> |
| | | <ShortName> Income Taxes - Significant Components of Company's Net Deferred Tax Assets/(Liabilities) (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 65 </Position> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R66.htm </HtmlFileName> |
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| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosureIncomeTaxesReconciliationOfUnrecognizedTaxBenefitsIncludingInterestAndPenaltiesDetail </Role> |
| | | <ShortName> Income Taxes - Reconciliation of Unrecognized Tax Benefits Including Interest and Penalties (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 66 </Position> |
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| | | <HtmlFileName> R67.htm </HtmlFileName> |
| | | <LongName> 100660 - Disclosure - Employee Benefit Plans - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosureEmployeeBenefitPlansAdditionalInformationDetail </Role> |
| | | <ShortName> Employee Benefit Plans - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 67 </Position> |
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| | | <LongName> 100670 - Disclosure - Restructuring - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Restructuring - Additional Information (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 68 </Position> |
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| | | <HtmlFileName> R69.htm </HtmlFileName> |
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| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosureRestructuringSummaryOfRestructuringActivityDetail </Role> |
| | | <ShortName> Restructuring - Summary of Restructuring Activity (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 69 </Position> |
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| | | <IsDefault> false </IsDefault> |
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| | | <HtmlFileName> R70.htm </HtmlFileName> |
| | | <LongName> 100690 - Disclosure - Restructuring - Summary of Charges in Consolidated Statement of Operations (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosureRestructuringSummaryOfChargesInConsolidatedStatementOfOperationsDetail </Role> |
| | | <ShortName> Restructuring - Summary of Charges in Consolidated Statement of Operations (Detail) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 70 </Position> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R71.htm </HtmlFileName> |
| | | <LongName> 100700 - Disclosure - Share-Based Compensation Plans - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/20160930/taxonomy/role/DisclosureShareBasedCompensationPlansAdditionalInformationDetail </Role> |
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