v3.25.4

Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Sep. 30, 2025
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Total gross intangible assets subject to amortization	$ 5,747	$ 5,715
Accumulated amortization	(3,057)	(2,990)
Total net intangible assets subject to amortization	2,690	2,725
Intangible assets not subject to amortization:
Trademarks and tradenames	154	154
Total net intangible assets	2,844	2,879
Trademarks and tradenames
Intangible assets not subject to amortization:
Trademarks and tradenames	$ 154	154
Recorded music catalog
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Weighted-Average Useful Life	12 years
Total gross intangible assets subject to amortization	$ 1,810	1,799
Music publishing copyrights
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Weighted-Average Useful Life	23 years
Total gross intangible assets subject to amortization	$ 2,717	2,692
Artist and songwriter contracts
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Weighted-Average Useful Life	13 years
Total gross intangible assets subject to amortization	$ 1,138	1,137
Trademarks
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Weighted-Average Useful Life	16 years
Total gross intangible assets subject to amortization	$ 29	29
Other intangible assets
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Weighted-Average Useful Life	6 years
Total gross intangible assets subject to amortization	$ 53	$ 58

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Finite lived and indefinite lived intangible assets.

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Warner Music Group Corp. 10-Q