Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangible Assets - Other Intangible Assets (Details)

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Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Sep. 30, 2023
Other Intangible Assets [Abstract]    
Carrying Amount $ 580,376 $ 579,261
Accumulated Amortization (445,575) (418,783)
Net 134,801 160,478
Definite-lived trade names    
Other Intangible Assets [Abstract]    
Carrying Amount 151,296 151,185
Accumulated Amortization (126,231) (122,474)
Net 25,065 28,711
Customer relationships    
Other Intangible Assets [Abstract]    
Carrying Amount 379,300 378,161
Accumulated Amortization (303,219) (280,910)
Net 76,081 97,251
Copyrights/patents/other    
Other Intangible Assets [Abstract]    
Carrying Amount 19,240 19,375
Accumulated Amortization (16,125) (15,399)
Net 3,115 3,976
Indefinite-lived trade names    
Other Intangible Assets [Abstract]    
Carrying Amount 30,540 30,540
Net $ 30,540 $ 30,540