v3.26.1
GOODWILL AND OTHER INTANGIBLE ASSETS - Intangible assets gross carrying amounts and accumulated amortization from continuing operations (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Sep. 30, 2025
Goodwill and Other Intangible Assets    
Goodwill not allocated to segments $ 761,181 $ 761,931
Finite-lived, accumulated amortization 327,709 286,965
Patents    
Goodwill and Other Intangible Assets    
Finite-lived, Gross 7,618 7,607
Finite-lived, accumulated amortization 2,030 1,775
Finite-lived, Net 5,588 5,832
Capitalized software    
Goodwill and Other Intangible Assets    
Finite-lived, Gross 143,307 138,144
Finite-lived, accumulated amortization 106,097 100,818
Finite-lived, Net 37,210 37,326
Customer Relationships    
Goodwill and Other Intangible Assets    
Finite-lived, Gross 620,238 625,535
Finite-lived, accumulated amortization 178,987 159,543
Finite-lived, Net 441,251 465,992
Other    
Goodwill and Other Intangible Assets    
Finite-lived, Gross 76,331 76,991
Finite-lived, accumulated amortization 40,595 24,829
Finite-lived, Net 35,736 52,162
Trade names    
Goodwill and Other Intangible Assets    
Indefinite-lived, Trade names $ 162,587 $ 162,661