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Investments in Affiliates (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Noncontrolling Interest [Line Items]    
Receivables from affiliates $ 55.1 $ 47.5
Undistributed earnings 365.6 $ 375.5
Dividends from joint ventures 84.4  
Return of investment in excess of earnings $ 22.7  
Finance Joint Ventures    
Noncontrolling Interest [Line Items]    
Noncontrolling interest, ownership percentage by parent 49.00%