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INVESTMENTS - Schedule of Investments in Unconsolidated Affiliates (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
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Equity method investments |  |
Carrying value of equity method investments | $ 34.1 | $ 33.6
Equity securities |  |
Carrying value of non-marketable equity securities | 88.7 | 87.6
Total investments in unconsolidated entities | $ 122.8 | $ 121.2

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