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Investments - Equity Method Investments (Details)
$ in Millions
6 Months Ended
Jun. 30, 2023
USD ($)
Equity Securities  
Equity method investments, beginning balance $ 93.0
New investments 25.5
Equity in earnings of unconsolidated affiliates 1.2
Foreign currency translation adjustments and other 0.9
Equity method investments, ending balance $ 120.6