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Related Party Transactions - Narrative (Details) - Equity Method Investee - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Related Party Transactions      
Commission expense $ 45.4 $ 48.8 $ 54.7
Operating Cost and Expense, Related Party, Type [Extensible Enumeration] Related party Related party Related party