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Investments in Affiliates - Schedule of Financial Information for Equity Method Investments (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Balance Sheet      
Total assets $ 1,646.2 $ 1,787.3 $ 1,879.8
Total liabilities 643.2 743.6  
Income Statement      
Revenue 208.9 230.5 254.0
Operating costs and expenses 145.4 168.8 171.5
Income (Loss) from Continuing Operations 40.8 18.8 75.4
Net income (loss) 29.8 (50.6) 35.4
Equity Method Investments      
Balance Sheet      
Current assets 63.6 56.5  
Non-current assets 259.7 240.0  
Total assets 323.3 296.5  
Current liabilities 39.5 26.3  
Non-current liabilities 143.7 121.1  
Total liabilities 183.2 147.4  
Income Statement      
Revenue 154.4 130.0 231.1
Operating costs and expenses 137.4 118.4 204.1
Gross Profit (Loss) 17.0 11.6 27.0
Income (Loss) from Continuing Operations (1.5) 1.6 (287.9)
Net income (loss) $ (1.5) $ 1.3 $ (288.1)