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Held for Sale and Discontinued Operations - Related Party Transactions within Discontinued Operations and Held for Sale (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]      
Revenue $ 208.9 $ 230.5 $ 254.0
Affiliated Entity      
Schedule of Equity Method Investments [Line Items]      
Revenue 13.7 16.9 9.3
Expenses from transactions 4.4 4.8 $ 1.4
Other receivables 0.0 6.9  
Amounts due to affiliates $ 0.0 $ 0.4