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Intangible Assets (Tables)
12 Months Ended
Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule Finite-Lived Intangible Assets
The table below summarizes the major classes of our intangible assets:
20242023
30 SeptemberGrossAccumulated
Amortization/
Impairment
NetGrossAccumulated
Amortization/
Impairment
Net
Finite-lived:
Customer relationships$524.9 ($298.2)$226.7 $507.3 ($262.2)$245.1 
Patents and technology32.9 (20.7)12.2 41.1 (26.7)14.4 
Other69.3 (32.9)36.4 76.7 (38.7)38.0 
Total finite-lived intangible assets$627.1 ($351.8)$275.3 $625.1 ($327.6)$297.5 
Indefinite-lived:
Trade names and trademarks46.2 (9.9)36.3 47.2 (10.1)37.1 
Total intangible assets$673.3 ($361.7)$311.6 $672.3 ($337.7)$334.6 
Schedule of Indefinite-Lived Intangible Assets
The table below summarizes the major classes of our intangible assets:
20242023
30 SeptemberGrossAccumulated
Amortization/
Impairment
NetGrossAccumulated
Amortization/
Impairment
Net
Finite-lived:
Customer relationships$524.9 ($298.2)$226.7 $507.3 ($262.2)$245.1 
Patents and technology32.9 (20.7)12.2 41.1 (26.7)14.4 
Other69.3 (32.9)36.4 76.7 (38.7)38.0 
Total finite-lived intangible assets$627.1 ($351.8)$275.3 $625.1 ($327.6)$297.5 
Indefinite-lived:
Trade names and trademarks46.2 (9.9)36.3 47.2 (10.1)37.1 
Total intangible assets$673.3 ($361.7)$311.6 $672.3 ($337.7)$334.6 
Schedule of Projected Annual Amortization Expense
The table below details the amount of amortization expense expected to be recorded for our finite-lived intangible assets in each of the next five years and thereafter:
2025$29.4 
202628.3 
202727.9 
202825.6 
202922.7 
Thereafter141.4 
Total$275.3