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| | | <LongName> 1090 - Disclosure - Segment Information - Long-Lived Assets and Revenue by Geographical Areas (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Segment Information - Long-Lived Assets and Revenue by Geographical Areas (Detail) </ShortName> |
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| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <LongName> 1091 - Disclosure - Segment Information - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/taxonomy/role/DisclosureSegmentInformationAdditionalInformation </Role> |
| | | <ShortName> Segment Information - Additional Information (Detail) </ShortName> |
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| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <LongName> 1092 - Disclosure - Additional Financial Information - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Additional Financial Information - Additional Information (Detail) </ShortName> |
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| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R92.htm </HtmlFileName> |
| | | <LongName> 1093 - Disclosure - Fair Value Measurements - Schedule of Fair Value of Financial Instruments (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Fair Value Measurements - Schedule of Fair Value of Financial Instruments (Detail) </ShortName> |
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| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R93.htm </HtmlFileName> |
| | | <LongName> 1094 - Disclosure - Fair Value Measurements - Reconciliation of Net Assets and Liabilities Classified as Level 3 (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Fair Value Measurements - Reconciliation of Net Assets and Liabilities Classified as Level 3 (Detail) </ShortName> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R94.htm </HtmlFileName> |
| | | <LongName> 1095 - Disclosure - Fair Value Measurements - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/taxonomy/role/DisclosureFairValueMeasurementsAdditionalInformation </Role> |
| | | <ShortName> Fair Value Measurements - Additional Information (Detail) </ShortName> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R95.htm </HtmlFileName> |
| | | <LongName> 1096 - Disclosure - Subsequent Events - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/taxonomy/role/DisclosureSubsequentEventsAdditionalInformation </Role> |
| | | <ShortName> Subsequent Events - Additional Information (Detail) </ShortName> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R96.htm </HtmlFileName> |
| | | <LongName> 1097 - Disclosure - Quarterly Financial Information - Quarterly Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/taxonomy/role/DisclosureQuarterlyFinancialInformationQuarterlyInformation </Role> |
| | | <ShortName> Quarterly Financial Information - Quarterly Information (Detail) </ShortName> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R97.htm </HtmlFileName> |
| | | <LongName> 1098 - Disclosure - Quarterly Financial Information - Quarterly Information (Parenthetical) (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/taxonomy/role/DisclosureQuarterlyFinancialInformationQuarterlyInformationParenthetical </Role> |
| | | <ShortName> Quarterly Financial Information - Quarterly Information (Parenthetical) (Detail) </ShortName> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R98.htm </HtmlFileName> |
| | | <LongName> 1099 - Disclosure - Guarantor And Non-Guarantor Subsidiaries Financial Information - Additional Information (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/taxonomy/role/DisclosureGuarantorAndNonGuarantorSubsidiariesFinancialInformationAdditionalInformation </Role> |
| | | <ShortName> Guarantor And Non-Guarantor Subsidiaries Financial Information - Additional Information (Detail) </ShortName> |
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| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R99.htm </HtmlFileName> |
| | | <LongName> 1100 - Disclosure - Guarantor And Non-Guarantor Subsidiaries Financial Information - Consolidating Balance Sheet (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/taxonomy/role/DisclosureGuarantorAndNonGuarantorSubsidiariesFinancialInformationConsolidatingBalanceSheet </Role> |
| | | <ShortName> Guarantor And Non-Guarantor Subsidiaries Financial Information - Consolidating Balance Sheet (Detail) </ShortName> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R100.htm </HtmlFileName> |
| | | <LongName> 1101 - Disclosure - Guarantor And Non-Guarantor Subsidiaries Financial Information - Consolidating Statement of Operations (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/taxonomy/role/DisclosureGuarantorAndNonGuarantorSubsidiariesFinancialInformationConsolidatingStatementOfOperations </Role> |
| | | <ShortName> Guarantor And Non-Guarantor Subsidiaries Financial Information - Consolidating Statement of Operations (Detail) </ShortName> |
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| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <LongName> 1102 - Disclosure - Guarantor And Non-Guarantor Subsidiaries Financial Information - Consolidating Statement of Comprehensive Income (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.wmg.com/taxonomy/role/DisclosureGuarantorAndNonGuarantorSubsidiariesFinancialInformationConsolidatingStatementOfComprehensiveIncome </Role> |
| | | <ShortName> Guarantor And Non-Guarantor Subsidiaries Financial Information - Consolidating Statement of Comprehensive Income (Detail) </ShortName> |
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| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <LongName> 1103 - Disclosure - Guarantor And Non-Guarantor Subsidiaries Financial Information - Consolidating Statement of Cash Flows (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <ShortName> Guarantor And Non-Guarantor Subsidiaries Financial Information - Consolidating Statement of Cash Flows (Detail) </ShortName> |
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| | | <LongName> 1104 - Disclosure - Guarantor And Non-Guarantor Subsidiaries Financial Information - Consolidating Statement of Cash Flows (Parenthetical) (Detail) </LongName> |
| | | <ReportType> Sheet </ReportType> |
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| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <Logs> |
| | <Log type="Info"> 'Monetary' elements on report '1084 - Disclosure - Related Party Transactions - Additional Information (Detail)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> Process Flow-Through: 1003 - Statement - Consolidated Balance Sheets </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Sep. 30, 2011' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Jul. 19, 2011' </Log> |
| | <Log type="Info"> Process Flow-Through: 1004 - Statement - Consolidated Balance Sheets (Parenthetical) </Log> |
| | <Log type="Info"> Process Flow-Through: 1005 - Statement - Consolidated Statements of Operations </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2013 Successor [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2013 Successor [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2013 Successor [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2012 Successor [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2012 Successor [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2012 Successor [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2012 Successor [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2011 Successor [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2011 Successor [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: 1006 - Statement - Consolidated Statements of Operations (Parenthetical) </Log> |
| | <Log type="Info"> Process Flow-Through: 1007 - Statement - Consolidated Statement of Comprehensive Loss </Log> |
| | <Log type="Info"> Process Flow-Through: 1008 - Statement - Consolidated Statements of Cash Flows </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '12 Months Ended Sep. 30, 2013 6.00% Senior Secured Notes Due 2021 [Member] USD ($)' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '12 Months Ended Sep. 30, 2013 6.25% Senior Secured Notes Due 2021 [Member] EUR (€)' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '12 Months Ended Sep. 30, 2013 Successor [Member] 6.00% Senior Secured Notes Due 2021 [Member] USD ($)' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '12 Months Ended Sep. 30, 2013 Successor [Member] 6.25% Senior Secured Notes Due 2021 [Member] USD ($)' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2011 Successor [Member] WMG Acquisition Corp. Consolidated [Member] USD ($)' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '12 Months Ended Sep. 30, 2013 Successor [Member] WMG Acquisition Corp. Consolidated [Member] USD ($)' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '12 Months Ended Sep. 30, 2012 Successor [Member] WMG Acquisition Corp. Consolidated [Member] USD ($)' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '12 Months Ended Sep. 30, 2013 Successor [Member] WMG Acquisition Corp. Consolidated [Member] 6.00% Senior Secured Notes Due 2021 [Member] USD ($)' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '12 Months Ended Sep. 30, 2013 Successor [Member] WMG Acquisition Corp. Consolidated [Member] 6.25% Senior Secured Notes Due 2021 [Member] USD ($)' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '10 Months Ended Jul. 19, 2011 Predecessor [Member] WMG Acquisition Corp. Consolidated [Member] USD ($)' </Log> |
| | <Log type="Info"> Process Flow-Through: 1009 - Statement - Consolidated Statements of Cash Flows (Parenthetical) </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Sep. 30, 2013 6.00% Senior Secured Notes Due 2021 [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Sep. 30, 2013 6.25% Senior Secured Notes Due 2021 [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Sep. 30, 2013 Successor [Member] 6.00% Senior Secured Notes Due 2021 [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Sep. 30, 2013 Successor [Member] 6.25% Senior Secured Notes Due 2021 [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Sep. 30, 2013 WMG Acquisition Corp. Consolidated [Member] Successor [Member] 6.00% Senior Secured Notes Due 2021 [Member]' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Sep. 30, 2013 WMG Acquisition Corp. Consolidated [Member] Successor [Member] 6.25% Senior Secured Notes Due 2021 [Member]' </Log> |
| | </Logs> |
| <InputFiles> |
| | <File> wmg-20130930.xml </File> |
| | <File> wmg-20130930.xsd </File> |
| | <File> wmg-20130930_cal.xml </File> |
| | <File> wmg-20130930_def.xml </File> |
| | <File> wmg-20130930_lab.xml </File> |
| | <File> wmg-20130930_pre.xml </File> |
| | </InputFiles> |
| <SupplementalFiles/> |
| <BaseTaxonomies/> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |