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Goodwill and Other Intangible Assets - Estimated Amortization Expense of Intangible Assets (Detail) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]    
2024 $ 26.5  
2025 26.4  
2026 25.1  
2027 24.5  
2028 24.3  
Thereafter 536.8  
Net Balance $ 663.6 $ 812.0