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Investments in Affiliates (Equity in Net Earnings of Affiliates) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]      
Equity in net earnings of affiliates $ 68.2 $ 64.1 $ 65.6
Finance joint ventures      
Schedule of Equity Method Investments [Line Items]      
Equity in net earnings of affiliates 66.9 63.0 64.4
Manufacturing and other joint ventures      
Schedule of Equity Method Investments [Line Items]      
Equity in net earnings of affiliates $ 1.3 $ 1.1 $ 1.2