v3.25.4
Intangible Assets, net (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Sep. 30, 2025
Finite-Lived Intangible Assets    
Finite-Lived Intangible Assets, Gross $ 3,832.4 $ 3,832.2
Finite-Lived Intangible Assets, Accumulated Amortization (1,683.4) (1,631.6)
Finite-Lived Intangible Assets, Net 2,149.0 2,200.6
Intangible Assets, Net (Excluding Goodwill)    
Carrying amount, total 4,646.7 4,646.2
Other intangible assets, net 2,963.3 3,014.6
Trademarks, brands and licensing agreements    
Indefinite-Lived Intangible Assets (Excluding Goodwill)    
Carrying amount 814.3 814.0
Customer Relationships    
Finite-Lived Intangible Assets    
Finite-Lived Intangible Assets, Gross 2,700.0 2,699.8
Finite-Lived Intangible Assets, Accumulated Amortization (1,262.7) (1,225.3)
Finite-Lived Intangible Assets, Net 1,437.3 1,474.5
Trademarks, brands and licensing agreements    
Finite-Lived Intangible Assets    
Finite-Lived Intangible Assets, Gross 1,132.4 1,132.4
Finite-Lived Intangible Assets, Accumulated Amortization (420.7) (406.3)
Finite-Lived Intangible Assets, Net $ 711.7 $ 726.1