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Related Party Transactions - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Equity Method Investee        
Related Party Transactions        
Commission expense $ 12.2 $ 14.0 $ 36.5 $ 41.2