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Equity Method Investments in Affiliates - Financial Information for Affiliates Accounted for Under the Equity Method (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]      
Net income $ 906.1 $ 1,388.1 $ 890.1
Assets 9,059.6 8,881.0  
Equity Method Investee      
Schedule of Equity Method Investments [Line Items]      
Revenues 3,115.6 3,239.5 3,228.1
Net income 1,313.0 1,358.7 $ 1,656.6
Assets 3,269.1 2,816.7  
Liabilities and Non-controlling interests $ 1,467.3 $ 1,221.4