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Goodwill and Intangible Assets (Tables)
 6 Months Ended
Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes in Goodwill for Each Reportable Segment
The following analysis details the changes in goodwill for each reportable segment:
Recorded
Music		Music
Publishing		Total
(in millions)
Balances at September 30, 2022$1,456 $464 $1,920 
Acquisitions3 — 3 
Other adjustments (a)37 — 37 
Balances at March 31, 2023$1,496 $464 $1,960 
______________________________________
(a)Other adjustments during the six months ended March 31, 2023 represent foreign currency movements.
Schedule of Indefinite Intangible Assets
Intangible assets consist of the following:
Weighted-Average Useful LifeMarch 31,
2023		September 30,
2022
(in millions)
Intangible assets subject to amortization:
Recorded music catalog12 years$1,391 $1,316 
Music publishing copyrights25 years1,982 1,889 
Artist and songwriter contracts13 years1,055 1,014 
Trademarks15 years108 103 
Other intangible assets6 years97 89 
Total gross intangible assets subject to amortization4,633 4,411 
Accumulated amortization(2,401)(2,172)
Total net intangible assets subject to amortization2,232 2,239 
Intangible assets not subject to amortization:
Trademarks and tradenamesIndefinite150 145 
Total net intangible assets$2,382 $2,384 
Schedule of Finite-Lived Intangible Assets
Intangible assets consist of the following:
Weighted-Average Useful LifeMarch 31,
2023		September 30,
2022
(in millions)
Intangible assets subject to amortization:
Recorded music catalog12 years$1,391 $1,316 
Music publishing copyrights25 years1,982 1,889 
Artist and songwriter contracts13 years1,055 1,014 
Trademarks15 years108 103 
Other intangible assets6 years97 89 
Total gross intangible assets subject to amortization4,633 4,411 
Accumulated amortization(2,401)(2,172)
Total net intangible assets subject to amortization2,232 2,239 
Intangible assets not subject to amortization:
Trademarks and tradenamesIndefinite150 145 
Total net intangible assets$2,382 $2,384