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Cash and Cash Equivalents (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Jun. 30, 2022
Dec. 31, 2021
Investments and loan receivable        
Cash deposits $ 404.2 $ 541.4    
Term deposits 890.9 655.1    
Cash and cash equivalents $ 1,295.1 $ 1,196.5 $ 910.6 $ 539.3