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Investments (Investments by Category) (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Mar. 31, 2024
Equity Method Investments, and Investments in Debt and Equity Securities [Abstract]    
Investments in equity method investees $ 71.3 $ 68.4
Other investments 6.4 6.4
Investments $ 77.7 $ 74.8