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Other Intangible Assets and Goodwill (Estimated Future Amortization Expense) (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Oct. 01, 2023
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2024 (excluding the two quarters ended March 31, 2024) $ 9.9  
2025 14.0  
2026 2.1  
2027 1.8  
2028 1.2  
Thereafter 2.2  
Total estimated future amortization expense $ 31.2 $ 41.1