XML 72 R55.htm IDEA: XBRL DOCUMENT
v3.20.2

Debt - Redemption of 4.125% and 4.875% Senior Secured Notes (Detail) € in Millions, $ in Millions | Jun. 30, 2020 USD ($) | Jun. 30, 2020 EUR (€) | Oct. 12, 2018 EUR (€) | Jun. 30, 2019 | Oct. 09, 2018
--- | --- | --- | --- | --- | ---
4.125% Senior Secured Notes due 2024 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate | 4.125% | 4.125% |  | 4.125% |
4.125% Senior Secured Notes due 2024 | Acquisition Corp. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate | 4.125% | 4.125% | 4.125% |  | 4.125%
Redemptions of senior notes | € |  | € 311.0 | € 34.5 |  |
4.875% Senior Secured Notes due 2024 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate | 4.875% | 4.875% |  | 4.875% |
4.875% Senior Secured Notes due 2024 | Acquisition Corp. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate | 4.875% | 4.875% |  |  | 4.875%
Redemptions of senior notes | $ | $ 220 |  |  |  |

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfSeniorDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wmg_FourPointOneTwoFivePercentSeniorSecuredNotesDueInTwoThousandTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=wmg_AcquisitionCorpIssuerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wmg_FourPointEightSevenFivePercentSeniorSecuredNotesDueInTwoThousandTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |