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Goodwill and Identifiable Intangible Assets - Narrative (Details)
$ in Millions
3 Months Ended 9 Months Ended
May 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
TradeName
Reportingunit
Sep. 30, 2023
USD ($)
Jun. 01, 2024
Dec. 31, 2023
USD ($)
Finite-Lived Intangible Assets [Line Items]              
Number of reporting units | Reportingunit       2      
Amortization of intangibles   $ 11.7 $ 10.8 $ 33.2 $ 32.7    
Goodwill impairment $ 127.5     127.5      
Accumulated impairment losses   $ 530.8   $ 530.8     $ 403.3
Indefinite-lived intangibles, impairment charge $ 37.7            
Number of indefinite-lived trade names | TradeName       3      
Finite lived intangible asset useful life           30 years