v3.26.1
Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Sep. 30, 2025
Finite Lived And Indefinite Lived Intangible Assets [Line Items]    
Total gross intangible assets subject to amortization $ 6,272 $ 5,715
Accumulated amortization (3,174) (2,990)
Total net intangible assets subject to amortization 3,098 2,725
Intangible assets not subject to amortization:    
Trademarks and tradenames 153 154
Total net intangible assets 3,251 2,879
Trademarks and tradenames    
Intangible assets not subject to amortization:    
Trademarks and tradenames $ 153 154
Recorded music catalog    
Finite Lived And Indefinite Lived Intangible Assets [Line Items]    
Weighted-Average Useful Life 14 years  
Total gross intangible assets subject to amortization $ 2,246 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 $ 2,792 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 $ 1,127 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 $ 31 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 $ 76 $ 58