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Goodwill and Intangible Assets
 3 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Goodwill and Intangible Assets
Goodwill
The following analysis details the changes in goodwill for each reportable segment:
Recorded
Music		Music
Publishing		Total
(in millions)
Balances at September 30, 2024$1,557 $464 $2,021 
Acquisitions21 — 21 
Other adjustments (a)(29)— (29)
Balances at December 31, 2024$1,549 $464 $2,013 
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(a)Other adjustments during the three months ended December 31, 2024 represent foreign currency movements.
The Company performs its annual goodwill impairment test in accordance with ASC 350, Intangibles—Goodwill and Other (“ASC 350”) during the fourth quarter of each fiscal year as of July 1. The Company may conduct an earlier review if events or circumstances occur that would suggest the carrying value of the Company’s goodwill may not be recoverable. No indicators of impairment were identified during the current period that required the Company to perform an interim assessment or recoverability test.
Intangible Assets
Intangible assets consist of the following:
Weighted-Average Useful LifeDecember 31,
2024		September 30,
2024
(in millions)
Intangible assets subject to amortization:
Recorded music catalog12 years$1,603 $1,616 
Music publishing copyrights24 years2,182 2,227 
Artist and songwriter contracts13 years1,099 1,125 
Trademarks17 years73 69 
Other intangible assets5 years86 69 
Total gross intangible assets subject to amortization5,043 5,106 
Accumulated amortization(2,714)(2,747)
Total net intangible assets subject to amortization2,329 2,359 
Intangible assets not subject to amortization:
Trademarks and tradenamesIndefinite149 152 
Total net intangible assets$2,478 $2,511 
The decrease in net intangible assets during the three months ended December 31, 2024 is primarily related to foreign currency movements, partially offset by business combinations which resulted in the recognition of intangible assets with a preliminary estimated fair value of $39 million in the aggregate within recorded music catalogs, artist and songwriter contracts, trademarks, and other intangibles.