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Document and Entity Information
Jan. 24, 2024
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jan. 24, 2024
Entity File Number 001-32502
Entity Registrant Name Warner Music Group Corp.
Entity Central Index Key 0001319161
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 13-4271875
Entity Address, Address Line One 1633 Broadway
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10019
City Area Code 212
Local Phone Number 275-2000
Title of 12(b) Security Class A Common Stock
Trading Symbol WMG
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false