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Investments in Affiliates (Equity in Net Earnings of Affiliates) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]      
Equity in net earnings of affiliates $ 65.6 $ 45.5 $ 42.5
Finance joint ventures      
Schedule of Equity Method Investments [Line Items]      
Equity in net earnings of affiliates 64.4 45.0 41.5
Manufacturing and other joint ventures      
Schedule of Equity Method Investments [Line Items]      
Equity in net earnings of affiliates $ 1.2 $ 0.5 $ 1.0