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Goodwill and Intangible Assets (Tables)
 3 Months Ended
Dec. 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, 2023$1,529 $464 $1,993 
Acquisitions3 — 3 
Other adjustments (a)19 — 19 
Balances at December 31, 2023$1,551 $464 $2,015 
______________________________________
(a)Other adjustments during the three months ended December 31, 2023 represent foreign currency movements.
Schedule of Indefinite Intangible Assets
Intangible assets consist of the following:
Weighted-Average Useful LifeDecember 31,
2023		September 30,
2023
(in millions)
Intangible assets subject to amortization:
Recorded music catalog12 years$1,540 $1,507 
Music publishing copyrights25 years2,111 2,026 
Artist and songwriter contracts13 years1,113 1,091 
Trademarks14 years113 111 
Other intangible assets6 years106 104 
Total gross intangible assets subject to amortization4,983 4,839 
Accumulated amortization(2,593)(2,486)
Total net intangible assets subject to amortization2,390 2,353 
Intangible assets not subject to amortization:
Trademarks and tradenamesIndefinite151 149 
Total net intangible assets$2,541 $2,502 
Schedule of Finite-Lived Intangible Assets
Intangible assets consist of the following:
Weighted-Average Useful LifeDecember 31,
2023		September 30,
2023
(in millions)
Intangible assets subject to amortization:
Recorded music catalog12 years$1,540 $1,507 
Music publishing copyrights25 years2,111 2,026 
Artist and songwriter contracts13 years1,113 1,091 
Trademarks14 years113 111 
Other intangible assets6 years106 104 
Total gross intangible assets subject to amortization4,983 4,839 
Accumulated amortization(2,593)(2,486)
Total net intangible assets subject to amortization2,390 2,353 
Intangible assets not subject to amortization:
Trademarks and tradenamesIndefinite151 149 
Total net intangible assets$2,541 $2,502