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INVESTMENTS - Investments in Unconsolidated Entities (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Equity method investments    
Carrying value of equity method investments $ 14.6 $ 8.4
Equity securities    
Carrying value of non-marketable equity securities 85.3 84.1
Total investments in unconsolidated entities $ 99.9 $ 92.5